JP4263860B2 - Powder bleach detergent composition - Google Patents

Powder bleach detergent composition Download PDF

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JP4263860B2
JP4263860B2 JP2001373193A JP2001373193A JP4263860B2 JP 4263860 B2 JP4263860 B2 JP 4263860B2 JP 2001373193 A JP2001373193 A JP 2001373193A JP 2001373193 A JP2001373193 A JP 2001373193A JP 4263860 B2 JP4263860 B2 JP 4263860B2
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bleaching
mass
composition
component
salt
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JP2003171689A (en
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有紀 阿部
孝 山崎
光男 佐渡
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ジョンソンディバーシー株式会社
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Priority to PCT/US2002/037370 priority patent/WO2003050220A1/en
Priority to AU2002352847A priority patent/AU2002352847A1/en
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    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39Organic or inorganic per-compounds
    • C11D3/3945Organic per-compounds
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02Inorganic compounds ; Elemental compounds
    • C11D3/04Water-soluble compounds
    • C11D3/10Carbonates ; Bicarbonates
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16Organic compounds
    • C11D3/37Polymers
    • C11D3/3746Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3757(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
    • C11D3/3761(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions in solid compositions
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39Organic or inorganic per-compounds
    • C11D3/3942Inorganic per-compounds

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、食器・調理器具等の硬表面の漂白に好適に用いられる粉末状の漂白洗浄剤組成物に関する。さらに詳しくは、組成物の貯蔵安定性及び水溶液中の有効酸素の安定性に優れることはもとより、スケール生成抑制力及び被洗物の腐食防止性に優れ、且つ、水溶液中に含まれるカルシウム、マグネシウム等の硬度成分量の多少に関わらずに漂白効果及び洗浄力に優れる漂白洗浄剤組成物に関する。
【0002】
【従来の技術】
従来、各種の食器、調理器具、住居用などに用いられる金属、ガラス、陶磁器、プラスチック等の硬表面に付着している色素汚れなどに対しては、低温でも漂白効果の高い次亜塩素酸ナトリウムを主成分とした漂白剤が広く用いられており、次亜塩素酸ナトリウムに界面活性剤を配合した塩素系の漂白洗浄剤も用いられてきた。しかしながら、塩素系の漂白剤又は漂白洗浄剤は、被洗物が金属の場合、錆を発生させやすく、また、ガラス、陶磁器、プラスチックなどの食器の場合、装飾の剥離や退色をもたらしたり、光沢を低減させたりするなどの欠点があった。さらに、酸性物質との併用による誤用事故のおそれがあり、近年では水質汚濁などの環境汚染も懸念されている。したがって、最近では、過酸化水素や、水溶液で過酸化水素を放出する過炭酸ナトリウム、過ホウ酸ナトリウム等の酸素系の漂白剤、又はこの酸素系の漂白剤に界面活性剤を添加した酸素系の漂白洗浄剤が広く用いられるようになってきた。
しかしながら、酸素系の漂白剤又は漂白洗浄剤は、塩素系の漂白剤又は漂白洗浄剤に比べて漂白効果が弱く、水溶液中の過酸化水素の安定性が悪いという欠点を有している。
【0003】
特開平4−372694号公報には、過酸化水素と、界面活性剤と、ポリ−α−ヒドロキシアクリル酸又はその塩或いはそのポリラクトンと、ポリアクリル酸もしくはマレイン酸系のポリマーを含有させることにより、漂白効果と過酸化水素の貯蔵安定性が向上した液体の漂白剤組成物が開示されている。特開平4−331299号公報には、過酸素化合物と、界面活性剤と、テトラアセチルエチレンジアミン及び/又はグルコースペンタアセテートからなる漂白活性化剤と、ポリ−α−ヒドロキシアクリル酸又はその塩或いはそのポリラクトンを含有する漂白剤組成物が開示されている。
また、特開平7−278597号公報には、カレー等の食べこぼし汚れに対する漂白効果を向上させたものとして、過酸素化合物と高分子重合体と特定の酵素を含有してなる粉末漂白洗浄剤組成物が開示されている。
【0004】
一方、酸素系漂白剤又は漂白洗浄剤を用いて食器・調理器具等を漂白する際に、水溶液の液性が弱アルカリ性からアルカリ性に設定されるために、水中のカルシウム、マグネシウム等の硬度成分が結びつきスケールとなって食器等の表面に付着する現象が起こる。特に、作業性を高めるために60℃程度の温水で漂白する場合には、こうしたスケール生成が促進されやすいという欠点を有していた。また、スケールの付着は、不衛生である様な印象を与えるとともに、食器等の光沢を低下させてしまうといった欠点があった。
【0005】
上記特開平4−372694号公報、特開平4−331299号公報、特開平7−278597号公報では、特定の成分を組み合わせることにより漂白効果や過酸化水素の安定性が向上することが開示されているが、スケールの生成防止という点には言及されておらず、近年、スケール生成抑制力を有する漂白洗浄剤が要望されていた。
【0006】
【発明が解決しようとする課題】
本発明は、組成物の貯蔵安定性及び水溶液中の有効酸素の安定性に優れることはもとより、食器・調理器具等の漂白に際してスケールの生成が抑制され、被洗物の腐食防止性を有し、且つ硬水中においても優れた漂白効果と洗浄力を有する漂白洗浄剤組成物を提供することを目的とする。
【0007】
【課題を解決するための手段】
本発明者らは、上記の目的を達成するべく鋭意研究を重ねた結果、本発明の完成に至った。すなわち、(A)過酸素化合物25〜85質量%、(B)ポリ−α−ヒドロキシアクリル酸及び/又はその塩0.3〜2.5質量%、(C)アクリル酸マレイン酸との共重合体である高分子重合体0.5〜質量%、(D)陰イオン界面活性剤及び/又は非イオン界面活性剤0.4〜2質量%及び(E)炭酸塩10〜25質量%を含有し、漂白活性化剤を含有せず、食器・調理器具等の漂白洗浄用用途であることを特徴とする粉末漂白洗浄剤組成物を第1の要旨とする。
【0008】
また、(A)成分の過酸素化合物が過炭酸ナトリウムである上記粉末漂白洗浄剤組成物を第2の要旨とし、(B)成分のポリ−α−ヒドロキシアクリル酸及び/又はその塩が、ポリ−α−ヒドロキシアクリル酸ナトリウムである上記粉末漂白洗浄剤組成物を第3の要旨とする。そして(C)成分の高分子重合体の平均分子量が、50,000〜80,000の範囲である上記粉末漂白洗浄剤組成物を第4の要旨とする。さらに、(D)成分の界面活性剤が、非イオン界面活性剤である上記粉末漂白洗浄剤組成物を第5の要旨とする。
【0010】
【発明の実施形態】
本発明の漂白洗浄剤組成物は、有効成分として、上記(A)成分、(B)成分、(C)成分、(D)成分及び(E)成分を含有する粉末状の組成物である。
【0011】
本発明に用いられる(A)成分の過酸素化合物としては、例えば過炭酸ナトリウム,過炭酸カリウムなどの過炭酸塩、過ホウ酸ナトリウムなどの過ホウ酸塩、過フタル酸ナトリウムなどの過フタル酸塩、過リン酸塩、さらには硫酸ナトリウムやケイ酸ナトリウムなどに過酸化水素を付加させたもの等が挙げられる。これらは単独で用いてもよく、2種以上を組み合わせて用いてもよい。これらのうち、安全性や環境保全の点から、過炭酸塩が好ましく、特に過炭酸ナトリウムが好ましく用いられる。これらの過酸素化合物の有効酸素量としては、過炭酸ナトリウムであれば11%含有のものが、過ホウ酸ナトリウムであれば15%含有のものが通常用いられる。
【0012】
この(A)成分の過酸素化合物の配合量は、本発明の漂白洗浄剤組成物(以下、組成物という)中に、25〜85質量%の範囲で選ばれる。この量が25質量%未満では漂白効果が充分に発揮されず、また85質量%を超えて配合しても漂白効果の向上は認められず、むしろ経済的に不利となる上、他の成分の配合量に制約を受ける。経済性及び他の性能のバランスなどの点から、上記過酸素化合物の配合量は、組成物の全重量に基づき、40〜80質量%の範囲が好ましく、さらに漂白効果の点から60〜80質量%の範囲が好ましい。
【0013】
本発明に用いられる(B)成分としては、ポリ−α−ヒドロキシアクリル酸及び/又はその塩である。酸の形であってもよく、一部又は全部が塩の形であってもよい。塩として、ナトリウム塩、カリウム塩、アミン塩及びアンモニウム塩等が挙げられる。水溶性でキレート作用を示し、水溶液中の有効酸素の安定化に寄与する。他成分との組み合わせにおいて漂白効果、洗浄力及びスケール生成抑制力の向上にも寄与する。本発明に用いられるポリ−α−ヒドロキシアクリル酸又はその塩としては、平均分子量が1,000〜1,000,000の範囲で選ばれ、水溶液にしたときの有効酸素の安定性の点から、2,000〜800,000の範囲が好ましく、さらに漂白効果の点から、2,000〜200,000の範囲がより好ましい。特に、水への溶解性および経済性の点から、ポリ−α−ヒドロキシアクリル酸において塩の一部又は全部がナトリウム塩であるものが好ましい。
【0014】
この(B)成分の配合量は、組成物中に0.3〜2.5質量%の範囲で選ばれる。この量が0.3質量%未満では組成物水溶液中の有効酸素の安定性の向上効果に乏しく、また2.5質量%を超えて配合しても、組成物水溶液中の有効酸素の安定性の向上効果は飽和になり、むしろ経済的に不利となる。組成物水溶液中の有効酸素の安定性及び経済性の点から、上記ポリ−α−ヒドロキシアクリル酸及び/又はその塩の配合量は、組成物の全重量に基づき、0.5〜2質量%の範囲が好ましい。
【0015】
本発明に用いられる(C)成分としては、アクリル酸マレイン酸との共重合体である高分子重合体が挙げられ、1種又は2種以上を組み合わせて用いられる。上記高分子重合体は、酸の形であってもよく、一部又は全部が塩の形であってもよい。上記高分子重合体は、スケール生成抑制力をもたせる目的で配合され、他成分との組み合わせにおいて漂白効果、洗浄力及び再汚染防止性の向上にも寄与する。
【0017】
また、上記アクリル酸とマレイン酸との共重合体塩としては、ナトリウム塩、カリウム塩、アミン塩及びアンモニウム塩等が挙げられる。なかでも塩の一部又は全部がナトリウム塩であるものが好ましい。
【0018】
そして、(C)成分の共重合体及びその塩の平均分子量は、スケール生成抑制力の点から、30,000〜100,000の範囲が好ましく、さらに漂白効果、洗浄力及び再汚染防止性の向上の点から、50,000〜80,000の範囲がより好ましい。
【0019】
なお、スケール生成抑制力及び再汚染防止性の点から、本発明では、(C)成分としてアクリル酸とマレイン酸との共重合体を用いるが、さらに、経済性の点から、上記アクリル酸とマレイン酸との共重合体において一部又は全部がナトリウム塩であるものが好ましい。
【0020】
この(C)成分の配合量は、組成物中に0.5〜質量%の範囲で選ばれる。この量が0.5質量%未満ではスケール生成抑制力に効果に乏しく、また質量%を超えて配合しても、スケール生成抑制力の向上は飽和となり、むしろ経済的に不利となる。スケール生成抑制力及び経済性の点から、上記高分子重合体の配合量は、組成物の全重量に基づき、スケール生成抑制力及び洗浄力の点から、1〜3質量%の範囲がより好ましい。
【0021】
本発明に用いられる(D)成分は組成物の洗浄力を向上させる目的で配合され、陰イオン界面活性剤及び/又は非イオン界面活性剤の1種又は2種以上を組み合わせて用いられる。
【0022】
ここで、陰イオン界面活性剤としては、アルキル又はアルケニルエーテル硫酸塩、アルキル又はアルケニル硫酸塩、オレフィンスルホン酸塩、アルカンスルホン酸塩、アルキル又はアルケニルエーテルカルボン酸塩、α−スルホ脂肪酸塩又はそのエステル類等を挙げることができる。なかでも、洗浄力の点から、アルキルベンゼンスルホン酸塩、アルカンスルホン酸塩、アルキル硫酸エステル塩、アルキルエーテル硫酸エステル塩、α―オレフィンスルホン酸塩が好ましく用いられる。
【0023】
非イオン界面活性剤としては、ポリオキシアルキレンアルキルエーテル、ポリオキアルキレンアルケニルエーテル、ポリオキシアルキレンアルキルフェニルエーテル、ポリオキシアルキレンアルケニルフェニルエーテル、高級脂肪酸アルカノールアミド又はそのアルキレンオキサイド付加物、脂肪酸グリセリンモノエステル、蔗糖脂肪酸エステル、ポリオキシエチレン高級脂肪酸アルカノールアミド及びアミンオキサイド等を挙げられる。なかでも、洗浄力及び浸透性の点から、ポリオキシアルキレンアルキルエーテルが好ましく用いられる。
ポリオキシアルキレンアルキルエーテルは、式R−(Ao)n−R’で表される。Rはアルキル、アルケニル、アルキルフェニル、アルケニルフェニル基であり、洗浄力の点から、炭素数は6〜24の範囲が好ましい。Aoはアルキレンオキサイドであり、エチレンオキサイド、プロピレンオキサイド、ブチレンオキサイド等が挙げられ、これらのうち1種又は2種以上を組み合わせて用いられる。nはアルキレンオキサイドの付加モル数であり、洗浄力の点から2〜15が好ましい。R’は水素又はメチル基又はエチル基である。経済性及び洗浄力の点から、例えば、炭素数9〜16の高級アルコールのエチレンオキサイド(2〜15モル)付加物、炭素数9〜16の高級アルコールのエチレンオキサイド(2〜15モル)プロピレンオキサイド(2〜15モル)付加物が好ましく用いられる。
【0024】
この(D)成分の配合量は、組成物中に0.4〜2質量%の範囲で選ばれる。この量が0.4質量%未満では洗浄力に劣り、また2質量%を超えて配合しても、洗浄力に向上は認められず、むしろ経済的に不利となる。洗浄力及び経済性の点から、上記界面活性剤は、組成物の全重量に基づき、0.4〜2質量%の範囲が好ましい。
【0025】
本発明に用いられる(E)成分としての炭酸塩は、炭酸塩、重炭酸塩、セスキ炭酸塩が挙げられ、これらのうち1種又は2種以上を組み合わせて用いられる。その塩としては、たとえばナトリウム塩、カリウム塩、アミン塩及びアンモニウム塩が挙げられるが、なかでもナトリウム塩が好ましい。
【0026】
(E)成分は、漂白効果及び洗浄力を向上させるために加えられ、その配合量は、組成物中に10〜25質量%の範囲で選ばれる。10質量%以下では、漂白効果及び洗浄力の向上に乏しく、25質量%を超えて配合した場合は、他成分とのバランスから、水中のカルシウムイオンと結合してスケールを生成しやすくなる。したがって、洗浄力及び経済性の点から、上記炭酸塩は、組成物の全重量に基づき、10〜25質量%の範囲に設定される
【0027】
また、本発明の組成物には、上記各成分に加え本発明の目的を阻害しない範囲で、必要に応じて更に、クエン酸,リンゴ酸,酒石酸,マレイン酸,フマル酸,コハク酸,グルコン酸等の有機カルボン酸及び/又はその塩、硫酸塩、キレート剤等の洗浄ビルダー、色素、香料、防腐剤、酵素等を配合することができる。
【0028】
本発明の組成物は、食器・調理器具等の漂白洗浄用においては、30〜60℃の水道水に希釈した水溶液として用いられる。30℃以下では漂白効果および洗浄力が低下し、60℃以上では漂白洗浄作業性に乏しく、火傷のおそれも生じる。本発明の組成物は、被洗浄物に付着した色素汚れや食物汚れの量に応じて0.08〜2質量%の水溶液として用いられ、このときの有効酸素濃度は2.5〜17%であることが好ましい。こうして調製された組成物の水溶液に、被洗浄物に付着した色素汚れや食物汚れの量に応じて10分〜2時間浸漬して漂白洗浄に供される。また、このときの水溶液のpHは弱アルカリ性からアルカリ性であることが好ましく、特に有効酸素の安定性から、10〜11程度であることが好ましい。本発明の組成物に酵素を配合した場合も同様である。
【0029】
【実施例】
以下、本発明の粉末漂白洗浄剤組成物について、実施例と比較例により本発明を詳細に説明する。なお、本発明はこれらに限定されるものではない。
【0030】
(1)供試漂白洗浄剤組成物の調製1
表1〜4に示す実施例1〜15、参考例1〜5及び比較例1〜7の漂白洗浄剤組成物を調製し、各種試験に供した。なお、表中の各成分の数値は、各成分の有り姿(質量%)であり、成分(A)〜(E)及び任意成分の和は全体で100質量%となっている。
【0031】
(2)得られた各種漂白洗浄剤組成物について、漂白効果、洗浄力、スケール生成抑制力、腐食防止性、水溶液中の有効酸素安定性、貯蔵安定性の試験項目について、以下の試験方法と判定基準により評価し、その結果を表1〜4に併せて示した。
【0032】
(2−1)漂白効果1
[試験方法]
茶シブの付着した湯呑み茶碗を、水道水を用いて1質量%に調製した水温40℃の各組成物溶液に1時間浸漬する。水洗後、乾燥して以下の基準で評価した。
[評価基準]
◎:茶シブ汚れが完全に除去されている。
○:茶シブ汚れがほとんど除去されている。
△:茶シブ汚れが少し認められる。
×:茶シブ汚れのほとんどが認められる。
【0033】
(2−2)洗浄力1
[試験方法]
・油汚れ:大豆油と牛脂を重量比で1:1の割合で混合した混合油を220℃で10時間、撹拌しながら加熱して作成した。50℃程度まで冷却した後、ステンレス板のテストピースに0.3gとり、均一に塗り広げて室温で2時間放置し、凝固させる。
水道水を用いて1質量%に調製した水温40℃の各組成物溶液200mlに、上記により作成したテストピースを10分間浸漬した後、取り出して静水中ですすぎ、自然乾燥させる。汚れの除去重量及び目視観察により、洗浄力を以下の基準で評価した。
[評価基準]
◎:90%以上除去される。
○:70%以上除去される。
△:50%以上除去される。
×:50%未満しか除去されない。
【0034】
(2−3)スケール生成抑制力1
[試験方法]
蒸留水2000mlに対し、硫酸マグネシウム七水和物380mg、炭酸水素ナトリウム732mg、塩化カルシウム494mgを溶解させ、人工硬水300ppmを調製する。この人工硬水を用いて1質量%に調製した各組成物溶液をガラス瓶に入れ、水溶液温度70℃のまま5時間保持する。一夜室温で冷却した後、ガラス瓶内の水溶液を捨て、ガラス瓶を水洗する。ガラス瓶の内壁の様子を目視で観察するとともに指先でさわったときの感触を、以下の基準で評価した。
[評価基準]
◎:ガラス瓶の内壁にスケールの付着が全く認められない。
○:目視ではガラス瓶の内壁にスケールの付着がほとんど認められないが、指先で触るとざらざらする。
△:ガラス瓶の内壁にスケールの付着が目視で認められる。
×:ガラス瓶の内壁にスケールの付着が顕著に認められる。
【0035】
(2−4)腐食防止性
[試験方法]
蒸留水を用いて1質量%に調製した各組成物溶液を水温70℃で10時間、#400の紙ヤスリで研磨したステンレス鋼(SUS410)片を浸漬する。取り出した後水洗し、ステンレス鋼片の表面の変色を観察して、以下の基準で評価した。
[評価基準]
◎:ステンレス鋼表面に変色は認められない。
○:ステンレス鋼表面に変色が少し認められる。
△:ステンレス鋼表面に変色が認められる。
×:ステンレス鋼表面に明らかな変色とともに腐食が認められる。
【0036】
(2−5)水溶液中の有効酸素の安定性
[試験方法]
蒸留水を用いて1質量%に調製した各組成物溶液を水温60℃に保持し、組成物の溶解直後及び3時間後の有効酸素濃度を測定する。有効酸素の安定性は、次式を用いて算出する。
水溶液中の有効酸素の安定性(%)=(3時間後の有効酸素濃度)/(溶解直後の有効酸素濃度)×100
[評価基準]
◎:有効酸素の安定性90%以上
○:有効酸素の安定性75%以上
△:有効酸素の安定性60%以上
×:有効酸素の安定性60%未満
【0037】
(2−6)貯蔵安定性
[試験方法]
各組成物50gを、ピンホールを有するスチロール棒瓶100mlにいれ、40℃、75RHで2週間保存し、保存前後における有効酸素濃度を測定する。有効酸素の安定性は、次式を用いて算出する。
[評価基準]
貯蔵安定性(%)=(2週間保存後の有効酸素濃度)/(保存前の有効酸素濃度)×100
◎:有効酸素の安定性90%以上
○:有効酸素の安定性80%以上
△:有効酸素の安定性50%以上
×:有効酸素の安定性50%未満
【0038】
【表1】

Figure 0004263860
【0039】
【表2】
Figure 0004263860
【0040】
【表3】
Figure 0004263860
【0041】
【表4】
Figure 0004263860
【0042】
なお、表中に示した成分は以下の通りであり、表1〜6においても同様である。
*過ホウ酸ナトリウム:有効酸素量15%含有品
*過炭酸ナトリウム:有効酸素量11%含有品
*PHAS:ポリ−α−ヒドロキシアクリル酸ナトリウム
*単独重合体:ポリアクリル酸ナトリウム(平均分子量8,000)
*共重合体:アクリル酸/マレイン酸共重合体のナトリウム塩(部分中和物)(平均分子量70,000)
*陰イオン界面活性剤1:アルカンスルホン酸ナトリウム(クラリアントジャパン社製/品名:Hostapur SAS60/炭素数12〜16の第2級アルカンスルホン酸ナトリウム;純分60%品)
*陰イオン界面活性剤2:アルキルエーテル硫酸ナトリウム(東邦化学社製/品名:アルスコープ TH−330/ポリオキシエチレン(3)ラウリルエーテル硫酸ナトリウム;純分26%品)
*非イオン界面活性剤1:ポリオキシアルキレンアルキルエーテル(第一工業製薬社製/品名:ノイゲンLP―100/天然高級アルコールのエチレンオキサイド及びプロピレンオキサイド付加物)
*非イオン界面活性剤2:ポリオキシエチレンアルキルエーテル(シェルジャパン社製/品名:ネオドール91−8/炭素数9〜11のアルコールのエチレンオキサイド8モル付加物)
*非イオン界面活性剤3:ポリオキシエチレンアルキルエーテル(日本触媒社製/品名:ソフタノール 90/炭素数12〜14の第2級アルコールのエチレンオキサイド9モル付加物)
*非イオン界面活性剤4:ポリオキシエチレンアルキルフェニルエーテル(第一工業製薬社製/品名:ノイゲンEA−120/ポリオキシエチレンノニルフェニルエーテル)
*TAED:テトラアセチルエチレンジアミン
【0043】
さらに、本発明を詳細に説明するため、硬水によって漂白洗浄剤組成物を希釈した際の効果について述べる。
(3)供試漂白洗浄剤組成物の調製2
表5〜6に示す実施例16〜20、参考例6及び比較例8〜12の漂白洗浄剤組成物を調製し、各種試験に供した。
なお、表中の各成分の数値は、各成分の有り姿(質量%)であり、成分(A)〜(E)及び任意成分の和は全体で100質量%となっている。
また、表中の実施例及び比較例の陰イオン界面活性剤及び非イオン界面活性剤は、表1〜4で示したものと同様である。
【0044】
(4)得られた各種漂白洗浄剤組成物について、漂白効果、洗浄力、スケール生成抑制力の試験項目について、以下の試験方法と判定基準により評価し、その結果を表5〜6に併せて示した。
【0045】
(4−1)漂白効果2
[汚染布の作成]
水道水1000mlに対して粉茶20gを入れ、1時間沸騰させた後、ガーゼで濾過して、室温まで冷却し、緑茶溶液とする。一方、水酸化カルシウムの飽和水溶液を調製し、定着液とする。綿ブロード#60の布を緑茶液に5分間浸し、続いて定着液に5分間浸した後、水洗して乾燥させる。この工程を3回繰り返して緑茶汚染布を作成する。
[試験方法]
・人工硬水の調製:蒸留水2000mlに対し、硫酸マグネシウム七水和物380mg、炭酸水素ナトリウム732mg、塩化カルシウム494mgを溶解させ、人工硬水300ppmを調製する。
・鉄イオン含有人工硬水の調製:上記人工硬水に硫酸鉄(2)アンモニウム六水和物5mgを溶解させ、鉄イオン含有人工硬水を調製する。
上記により調製した人工硬水又は鉄イオン含有人工硬水又は蒸留水を用いて1質量%に調製した水温60℃の各組成物溶液500mlに、上記により作成した緑茶汚染布(5cm×5cm)を3分間浸漬した後、取り出して水洗し、自然乾燥させる。白色度は色差計にて測定し、漂白率は次式にて求める。
[漂白効果の算出]
漂白率(%)=(漂白後の白色度―漂白前の白色度)/(汚染前の白布の白色度―漂白前の白色度)×100
以下の基準で評価した。
◎:漂白率80%以上
○:漂白率65%以上
△:漂白率50%以上
×:漂白率50%未満
【0046】
(4−2)洗浄力2
[試験方法]
・油汚れ:大豆油と牛脂を重量比で1:1の割合で混合した混合油を220℃で10時間、撹拌しながら加熱して作成した。50℃程度まで冷却した後、ステンレス板のテストピースに0.3gとり、均一に塗り広げて室温で2時間放置し、凝固させる。
・卵汚れ:生卵を卵黄と卵白に分け、それぞれガーゼで濾過する。濾過した卵黄と卵白を重量比で4:6の割合で混合し、ステンレス板のテストピースに0.6gとり、均一に塗り広げて室温で3時間放置し、乾固させる。
・でんぷん汚れ:上新粉と蒸留水を重量比で1:9の割合で混合し、70℃で30分、撹拌しながら加熱してペースト状にする。ステンレス板のテストピースに0.6gとり、均一に塗り広げて室温で3時間放置し、乾固させる。
・人工硬水の調製:蒸留水2000mlに対し、硫酸マグネシウム七水和物380mg、炭酸水素ナトリウム732mg、塩化カルシウム494mgを溶解させ、人工硬水300ppmを調製する。
上記により調製した人工硬水又は蒸留水を用いて1質量%に調製した水温40℃の各組成物溶液200mlに、上記により作成した3種類のテストピースを別々に、所定時間浸漬する。浸漬時間は、油汚れ及び卵汚れについては10分、でんぷん汚れについては20分である。その後、取り出して静水中ですすぎ、自然乾燥させる。汚れの除去重量及び目視観察により、洗浄力を以下の基準で評価した。
[評価基準]
◎:90%以上除去される。
○:70%以上除去される。
△:50%以上除去される。
×:50%未満しか除去されない。
【0047】
(4−3)スケール生成抑制力2
[試験方法]
(4−2)の洗浄力試験終了後、一夜室温で放冷する。ガラス瓶内の水溶液を捨て、ガラス瓶を水洗する。ガラス瓶の内壁の様子を目視で観察するとともに指先でさわったときの感触を、以下の基準で評価した。
[評価基準]
◎:ガラス瓶の内壁にスケールの付着が全く認められない。
○:目視ではガラス瓶の内壁にスケールの付着がほとんど認められないが、指先で触るとざらざらする。
△:ガラス瓶の内壁にスケールの付着が目視で認められる。
×:ガラス瓶の内壁にスケールの付着が顕著に認められる。
【0048】
【表5】
Figure 0004263860
【0049】
【表6】
Figure 0004263860
【0050】
本発明の粉末漂白洗浄剤組成物である実施例1〜2において、漂白効果、洗浄力、スケール生成抑制力、腐食防止性、水溶液中の有効酸素の安定性、貯蔵安定性のいずれの試験項目においても、良好な性能を示すことがわかる。
【0051】
比較例1〜3及び比較例8〜9はポリ−α−ヒドロキシアクリル酸塩を含まない場合である。比較例1〜3より、水溶液中の有効酸素の安定性及び貯蔵安定性に問題があり、食器・調理器具等の浸漬漂白という使用方法においては、十分な効果を発揮できないことがわかる。また、洗浄力も十分ではないこともわかる。さらに、比較例8〜9より、水溶液中に鉄イオンが存在する場合に漂白効果が劣ること、及び洗浄力試験後で水溶液内に汚れ成分が存在する場合にスケール生成抑制力に劣ることがわかる。
【0052】
比較例3〜4及び比較例9〜10はポリアクリル酸塩及び/又はポリアクリル酸とマレイン酸との共重合体の塩を含まない場合であり、スケール生成抑制力に劣っていることがわかる。特に、比較例9〜10において、洗浄力試験後で水溶液内に汚れ成分が存在した場合のスケールの生成が著しく、実用性には耐えないことがわかる。
【0053】
比較例5及び比較例11は界面活性剤を含まない場合であり、漂白効果及び洗浄力に劣ることがわかる。また、比較例6及び比較例12は炭酸塩の含有量が10質量%を下回る量を含有する場合であり、漂白効果及び洗浄力に劣ることがわかる。比較例7は漂白活性化剤(テトラアセチルエチレンジアミン)が配合された従来の漂白剤組成物の場合であり、本発明品に漂白活性化剤を配合することにより、スケール生成抑制力及び被洗物の腐食防止性が低下することがわかる。
【0054】
【発明の効果】
本発明の粉末漂白剤組成物は、食器・調理器具等の漂白に好適に用いられ、組成物の貯蔵安定性及び水溶液中の有効酸素の安定性に優れることはもとより、スケール生成抑制力及び被洗物の腐食防止性に優れ、且つ、水溶液中に含まれるカルシウム、マグネシウム等の硬度成分量の多少に関わらずに漂白効果及び洗浄力に優れる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a powdery bleaching detergent composition suitably used for bleaching hard surfaces such as tableware and cooking utensils. More specifically, not only the composition has excellent storage stability and stability of effective oxygen in the aqueous solution, but also has excellent scale formation inhibiting power and corrosion resistance of the washing object, and calcium and magnesium contained in the aqueous solution. The present invention relates to a bleaching detergent composition excellent in bleaching effect and detergency regardless of the amount of hardness components such as.
[0002]
[Prior art]
Sodium hypochlorite, which has a high bleaching effect even at low temperatures, for pigment stains attached to hard surfaces such as metal, glass, ceramics, and plastics used in various tableware, cooking utensils, homes, etc. As a main component, a bleaching agent is widely used, and a chlorine-based bleaching detergent in which a surfactant is added to sodium hypochlorite has also been used. However, chlorinated bleach or bleaching detergent tends to generate rust when the object to be washed is metal, and it causes peeling or fading of decoration or gloss when it is a tableware such as glass, ceramic or plastic. There were drawbacks, such as reducing. Furthermore, there is a risk of misuse due to the combined use with acidic substances, and in recent years there is a concern about environmental pollution such as water pollution. Therefore, recently, oxygen-based bleaching agents such as hydrogen peroxide, sodium percarbonate and sodium perborate that release hydrogen peroxide in an aqueous solution, or oxygen-based bleaches added with surfactants. Bleaching detergents have been widely used.
However, oxygen-based bleaching agents or bleaching detergents have the disadvantage that the bleaching effect is weaker than that of chlorine-based bleaching agents or bleaching detergents, and the stability of hydrogen peroxide in an aqueous solution is poor.
[0003]
In JP-A-4-372694, by containing hydrogen peroxide, a surfactant, poly-α-hydroxyacrylic acid or a salt thereof or a polylactone thereof, and a polyacrylic acid or maleic acid polymer, Liquid bleach compositions having improved bleaching effects and hydrogen peroxide storage stability are disclosed. JP-A-4-331299 discloses a peroxygen compound, a surfactant, a bleaching activator comprising tetraacetylethylenediamine and / or glucose pentaacetate, poly-α-hydroxyacrylic acid or a salt thereof or a polylactone thereof. A bleaching composition containing is disclosed.
Japanese Patent Application Laid-Open No. 7-278597 discloses a powder bleach detergent composition comprising a peroxygen compound, a polymer, and a specific enzyme as an improved bleaching effect on spilled dirt such as curry. Things are disclosed.
[0004]
On the other hand, when bleaching dishes and cooking utensils using an oxygen bleach or bleach cleaner, the liquidity of the aqueous solution is set from weak alkaline to alkaline, so that hardness components such as calcium and magnesium in water Phenomenon that adheres to the surface of tableware, etc., becomes a tying scale. In particular, in the case of bleaching with warm water of about 60 ° C. in order to improve workability, there is a drawback that such scale formation is easily promoted. In addition, the adhesion of the scale has the disadvantages of giving an impression that it is unsanitary and lowering the gloss of tableware and the like.
[0005]
JP-A-4-372694, JP-A-4-331299, and JP-A-7-278597 disclose that the bleaching effect and the stability of hydrogen peroxide are improved by combining specific components. However, there is no mention of prevention of scale formation, and in recent years, there has been a demand for a bleaching detergent having an ability to suppress scale formation.
[0006]
[Problems to be solved by the invention]
The present invention not only has excellent storage stability of the composition and stability of active oxygen in the aqueous solution, but also suppresses the formation of scale during bleaching of tableware, cooking utensils, etc. Another object of the present invention is to provide a bleaching detergent composition having an excellent bleaching effect and detergency even in hard water.
[0007]
[Means for Solving the Problems]
As a result of intensive studies to achieve the above object, the present inventors have completed the present invention. That is, (A) 25 to 85% by mass of peroxygen compound, (B) poly-α-hydroxyacrylic acid and / or salt thereof 0.3 to 2.5% by mass, (C) acrylic acid When Maleic acid With High molecular weight polymer 0.5 ~ 3 Mass%, (D) anionic surfactant and / or nonionic surfactant 0.4 to 2 mass% and (E) carbonate 10 to 25 A powder bleach cleaning composition containing 1% by mass, containing no bleach activator, and being used for bleach cleaning of tableware, cooking utensils, etc. is a first gist.
[0008]
Further, the powder bleach detergent composition (A) wherein the peroxygen compound of component (A) is sodium percarbonate is a second gist, and (B) component poly-α-hydroxyacrylic acid and / or a salt thereof is The powder bleach detergent composition which is sodium α-hydroxyacrylate is a third gist. And (C) component polymer Average molecular weight But, In the range of 50,000-80,000 The powder bleach detergent composition is a fourth gist. Furthermore, let the said powder bleach detergent composition whose surfactant of (D) component is a nonionic surfactant make a 5th summary.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The bleaching detergent composition of the present invention is a powdery composition containing the above components (A), (B), (C), (D) and (E) as active ingredients.
[0011]
Examples of the peroxygen compound (A) used in the present invention include percarbonate such as sodium percarbonate and potassium percarbonate, perborate such as sodium perborate, and perphthalic acid such as sodium perphthalate. Examples include salts, superphosphates, and those obtained by adding hydrogen peroxide to sodium sulfate or sodium silicate. These may be used alone or in combination of two or more. Of these, percarbonate is preferable from the viewpoint of safety and environmental protection, and sodium percarbonate is particularly preferably used. The effective oxygen amount of these peroxygen compounds is usually 11% containing sodium percarbonate and 15% containing sodium perborate.
[0012]
The blending amount of the peroxygen compound as the component (A) is selected in the range of 25 to 85% by mass in the bleaching detergent composition of the present invention (hereinafter referred to as composition). If this amount is less than 25% by mass, the bleaching effect will not be sufficiently exerted, and if it exceeds 85% by mass, the improvement of the bleaching effect is not recognized, but it is rather disadvantageous economically, and other components Restricted by blending amount. From the viewpoint of economic balance and other performance, the amount of the peroxygen compound is preferably in the range of 40 to 80% by mass based on the total weight of the composition, and more preferably 60 to 80% from the viewpoint of the bleaching effect. % Range is preferred.
[0013]
The component (B) used in the present invention is poly-α-hydroxyacrylic acid and / or a salt thereof. The acid form may be used, and a part or all of the acid form may be used. Examples of the salt include sodium salt, potassium salt, amine salt and ammonium salt. It is water-soluble and exhibits a chelating action, contributing to the stabilization of available oxygen in the aqueous solution. In combination with other components, it contributes to the improvement of the bleaching effect, the cleaning power and the scale formation inhibiting power. As poly-α-hydroxyacrylic acid or a salt thereof used in the present invention, an average molecular weight is selected in the range of 1,000 to 1,000,000, and from the point of stability of effective oxygen when an aqueous solution is used, The range of 2,000 to 800,000 is preferable, and the range of 2,000 to 200,000 is more preferable from the viewpoint of the bleaching effect. In particular, from the viewpoint of solubility in water and economy, poly-α-hydroxyacrylic acid in which part or all of the salt is a sodium salt is preferred.
[0014]
The compounding quantity of this (B) component is chosen in the range of 0.3-2.5 mass% in a composition. If this amount is less than 0.3% by mass, the effect of improving the stability of active oxygen in the aqueous composition solution is poor, and even if it exceeds 2.5% by mass, the stability of active oxygen in the aqueous solution of the composition is poor. The effect of improving becomes saturated and rather disadvantageous economically. From the viewpoint of the stability and economical efficiency of active oxygen in the aqueous solution of the composition, the blending amount of the poly-α-hydroxyacrylic acid and / or a salt thereof is 0.5 to 2% by mass based on the total weight of the composition. The range of is preferable.
[0015]
As the component (C) used in the present invention, acrylic acid When Maleic acid With The high molecular polymer which is a copolymer is mentioned, It uses 1 type or in combination of 2 or more types. the above The high molecular weight polymer may be in the acid form, or a part or all of the polymer may be in the form of a salt. the above The high molecular weight polymer is blended for the purpose of giving scale formation inhibiting power, and contributes to improvement of bleaching effect, cleaning power and recontamination prevention property in combination with other components.
[0017]
Also, the above Copolymer of acrylic acid and maleic acid of Examples of the salt include sodium salt, potassium salt, amine salt and ammonium salt. Among these, a salt in which a part or all of the salt is a sodium salt is preferable.
[0018]
(C) component Both The average molecular weight of the polymer and its salt is preferably in the range of 30,000 to 100,000 from the viewpoint of scale formation inhibiting power, and further from the viewpoint of improvement of bleaching effect, detergency and recontamination prevention property, 50,000. A range of ˜80,000 is more preferable.
[0019]
In addition From the point of scale generation suppression and recontamination prevention, In the present invention, as component (C) Copolymer of acrylic acid and maleic acid Is used In addition, from the economic point of view, the above In the copolymer of acrylic acid and maleic acid, a part or all of which is a sodium salt is preferable.
[0020]
The compounding quantity of this (C) component is 0.5- in a composition. 3 It is selected in the range of mass%. If this amount is less than 0.5% by mass, the effect of inhibiting scale formation is poor, 3 Even if blended in excess of the mass%, the improvement of the scale generation inhibiting power becomes saturated, which is rather disadvantageous economically. From the viewpoint of scale formation inhibiting power and economic efficiency, the amount of the high molecular weight polymer is based on the total weight of the composition from the viewpoint of scale production inhibiting power and cleaning power. 1 A range of ˜3 mass% is more preferable.
[0021]
(D) component used for this invention is mix | blended in order to improve the detergency of a composition, and is used in combination of 1 type, or 2 or more types of an anionic surfactant and / or a nonionic surfactant.
[0022]
Here, as the anionic surfactant, alkyl or alkenyl ether sulfate, alkyl or alkenyl sulfate, olefin sulfonate, alkane sulfonate, alkyl or alkenyl ether carboxylate, α-sulfo fatty acid salt or ester thereof And the like. Among these, alkylbenzene sulfonate, alkane sulfonate, alkyl sulfate ester salt, alkyl ether sulfate ester salt and α-olefin sulfonate are preferably used from the viewpoint of detergency.
[0023]
Nonionic surfactants include polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, polyoxyalkylene alkyl phenyl ethers, polyoxyalkylene alkenyl phenyl ethers, higher fatty acid alkanolamides or alkylene oxide adducts thereof, fatty acid glycerin monoesters, Examples include sucrose fatty acid ester, polyoxyethylene higher fatty acid alkanolamide, and amine oxide. Of these, polyoxyalkylene alkyl ethers are preferably used in terms of detergency and permeability.
The polyoxyalkylene alkyl ether is represented by the formula R— (Ao) n—R ′. R is an alkyl, alkenyl, alkylphenyl, or alkenylphenyl group, and the number of carbon atoms is preferably in the range of 6 to 24 from the viewpoint of detergency. Ao is an alkylene oxide, and examples thereof include ethylene oxide, propylene oxide, butylene oxide, and one or more of these are used in combination. n is the number of added moles of alkylene oxide, and is preferably 2 to 15 from the viewpoint of detergency. R ′ is hydrogen, a methyl group or an ethyl group. From the viewpoint of economy and detergency, for example, an ethylene oxide (2 to 15 mol) adduct of a higher alcohol having 9 to 16 carbon atoms, an ethylene oxide (2 to 15 mol) propylene oxide of a higher alcohol having 9 to 16 carbon atoms Adducts (2 to 15 mol) are preferably used.
[0024]
The compounding quantity of this (D) component is chosen in the range of 0.4-2 mass% in a composition. If this amount is less than 0.4% by mass, the detergency is inferior, and even if it exceeds 2% by mass, no improvement is observed in the detergency, but it is economically disadvantageous. From the viewpoint of detergency and economy, the surfactant is preferably in the range of 0.4 to 2% by mass based on the total weight of the composition.
[0025]
Examples of the carbonate as the component (E) used in the present invention include carbonates, bicarbonates, and sesquicarbonates, and one or more of these are used in combination. Examples of the salt include sodium salt, potassium salt, amine salt and ammonium salt, among which sodium salt is preferable.
[0026]
(E) A component is added in order to improve a bleaching effect and a detergency, and the compounding quantity is 10 to 10 in a composition. 25 It is selected in the range of mass%. If it is less than 10% by mass, the effect of bleaching and improvement in detergency are poor, 25 When it mix | blends exceeding mass%, it will become easy to produce | generate a scale combining with the calcium ion in water from the balance with another component. Therefore, From the viewpoint of detergency and economy, the carbonate is in the range of 10 to 25% by weight based on the total weight of the composition. Set to .
[0027]
The composition of the present invention further includes citric acid, malic acid, tartaric acid, maleic acid, fumaric acid, succinic acid, and gluconic acid as necessary, in addition to the above-mentioned components, as long as the object of the present invention is not impaired. Organic carboxylic acids such as these and / or salts thereof, sulfates, chelating agents and other cleaning builders, pigments, fragrances, preservatives, enzymes and the like can be blended.
[0028]
The composition of the present invention is used as an aqueous solution diluted in tap water at 30 to 60 ° C. for bleach washing of tableware and cooking utensils. If it is 30 ° C. or lower, the bleaching effect and the detergency are lowered, and if it is 60 ° C. or higher, the bleaching and cleaning workability is poor and there is a risk of burns. The composition of the present invention is used as an aqueous solution of 0.08 to 2% by mass depending on the amount of pigment stains and food stains adhering to the object to be cleaned, and the effective oxygen concentration at this time is 2.5 to 17%. Preferably there is. It is immersed in the aqueous solution of the composition prepared in this manner for 10 minutes to 2 hours depending on the amount of pigment stains and food stains attached to the object to be washed and subjected to bleaching washing. In addition, the pH of the aqueous solution at this time is preferably weakly alkaline to alkaline, and particularly preferably about 10 to 11 in view of the stability of effective oxygen. The same applies when an enzyme is added to the composition of the present invention.
[0029]
【Example】
Hereinafter, the present invention will be described in detail with reference to Examples and Comparative Examples for the powder bleach detergent composition of the present invention. The present invention is not limited to these.
[0030]
(1) Preparation of test bleach detergent composition 1
Examples 1 to 4 shown in Tables 1 to 4 15, Reference Examples 1-5 And the bleaching detergent composition of Comparative Examples 1-7 was prepared and used for various tests. In addition, the numerical value of each component in a table | surface is the appearance (mass%) of each component, and the sum of component (A)-(E) and an arbitrary component is 100 mass% on the whole.
[0031]
(2) About the various bleaching detergent compositions obtained, the following test methods and test items for bleaching effect, detergency, scale formation inhibiting ability, corrosion resistance, effective oxygen stability in aqueous solution, and storage stability It evaluated by the criteria and the result was combined with Tables 1-4, and was shown.
[0032]
(2-1) Bleaching effect 1
[Test method]
A teacup with tea sibs attached is immersed in each composition solution having a water temperature of 40 ° C. prepared to 1% by mass using tap water for 1 hour. After washing with water, it was dried and evaluated according to the following criteria.
[Evaluation criteria]
(Double-circle): The tea shibu dirt is removed completely.
○: Tea stains are almost removed.
Δ: Slight brown stains are observed.
X: Most of tea stains are observed.
[0033]
(2-2) Detergency 1
[Test method]
Oil stain: A mixed oil prepared by mixing soybean oil and beef tallow at a weight ratio of 1: 1 was heated at 220 ° C. for 10 hours with stirring and prepared. After cooling to about 50 ° C., 0.3 g is taken on a test piece of a stainless steel plate, spread evenly and left at room temperature for 2 hours to solidify.
The test piece prepared as described above is immersed for 10 minutes in 200 ml of each composition solution having a water temperature of 40 ° C. prepared to 1% by mass using tap water, taken out, rinsed in still water, and naturally dried. The detergency was evaluated according to the following criteria by the removal weight of dirt and visual observation.
[Evaluation criteria]
A: 90% or more is removed.
○: 70% or more is removed.
Δ: 50% or more is removed.
X: Only less than 50% is removed.
[0034]
(2-3) Scale generation suppression power 1
[Test method]
380 mg of magnesium sulfate heptahydrate, 732 mg of sodium bicarbonate, and 494 mg of calcium chloride are dissolved in 2000 ml of distilled water to prepare 300 ppm of artificial hard water. Each composition solution prepared to 1% by mass using this artificial hard water is put in a glass bottle and kept at an aqueous solution temperature of 70 ° C. for 5 hours. After cooling at room temperature overnight, the aqueous solution in the glass bottle is discarded and the glass bottle is washed with water. The appearance of the inner wall of the glass bottle was visually observed and the touch when touched with a fingertip was evaluated according to the following criteria.
[Evaluation criteria]
A: No adhesion of scale to the inner wall of the glass bottle is observed.
○: The scale is hardly adhered to the inner wall of the glass bottle by visual observation, but is rough when touched with a fingertip.
(Triangle | delta): The adhesion of a scale is visually recognized on the inner wall of a glass bottle.
X: The scale adheres significantly to the inner wall of the glass bottle.
[0035]
(2-4) Corrosion prevention
[Test method]
Each composition solution prepared to 1% by mass using distilled water is immersed in a piece of stainless steel (SUS410) polished with a # 400 paper file at a water temperature of 70 ° C. for 10 hours. After taking out, it washed with water, the discoloration of the surface of a stainless steel piece was observed, and the following references | standards evaluated.
[Evaluation criteria]
A: No discoloration is observed on the stainless steel surface.
○: Some discoloration is observed on the stainless steel surface.
(Triangle | delta): Discoloration is recognized by the stainless steel surface.
X: Corrosion is recognized with a clear discoloration on the stainless steel surface.
[0036]
(2-5) Stability of available oxygen in aqueous solution
[Test method]
Each composition solution prepared to 1% by mass using distilled water is maintained at a water temperature of 60 ° C., and the effective oxygen concentration immediately after dissolution of the composition and after 3 hours is measured. The stability of effective oxygen is calculated using the following equation.
Stability of effective oxygen in aqueous solution (%) = (effective oxygen concentration after 3 hours) / (effective oxygen concentration immediately after dissolution) × 100
[Evaluation criteria]
A: Effective oxygen stability is 90% or more
○: More than 75% of effective oxygen stability
Δ: Effective oxygen stability 60% or more
X: Stability of effective oxygen less than 60%
[0037]
(2-6) Storage stability
[Test method]
50 g of each composition is placed in 100 ml of a styrol stick bottle having a pinhole, stored at 40 ° C. and 75 RH for 2 weeks, and the effective oxygen concentration before and after storage is measured. The stability of effective oxygen is calculated using the following equation.
[Evaluation criteria]
Storage stability (%) = (effective oxygen concentration after 2 weeks storage) / (effective oxygen concentration before storage) × 100
A: Effective oxygen stability is 90% or more
○: Effective oxygen stability 80% or more
Δ: Stability of effective oxygen 50% or more
X: Stability of available oxygen is less than 50%
[0038]
[Table 1]
Figure 0004263860
[0039]
[Table 2]
Figure 0004263860
[0040]
[Table 3]
Figure 0004263860
[0041]
[Table 4]
Figure 0004263860
[0042]
In addition, the component shown in the table | surface is as follows, and is the same also in Tables 1-6.
* Sodium perborate: A product containing 15% effective oxygen
* Sodium percarbonate: Product containing 11% effective oxygen
* PHAS: sodium poly-α-hydroxyacrylate
* Homopolymer: Sodium polyacrylate (average molecular weight 8,000)
* Copolymer: Sodium salt (partially neutralized product) of acrylic acid / maleic acid copolymer (average molecular weight 70,000)
* Anionic surfactant 1: Sodium alkane sulfonate (manufactured by Clariant Japan Co., Ltd./Product name: Hostapur SAS 60 / Secondary sodium alkane sulfonate having 12 to 16 carbon atoms; 60% pure product)
* Anionic surfactant 2: Sodium alkyl ether sulfate (manufactured by Toho Chemical Co., Ltd./Product name: Arscope TH-330 / Polyoxyethylene (3) sodium lauryl ether sulfate; 26% pure product)
* Nonionic surfactant 1: Polyoxyalkylene alkyl ether (Daiichi Kogyo Seiyaku Co., Ltd./Product name: Neugen LP-100 / Ethylene oxide and propylene oxide adducts of natural higher alcohols)
* Nonionic surfactant 2: Polyoxyethylene alkyl ether (manufactured by Shell Japan Co., Ltd./Product name: Neodol 91-8 / Ethylene oxide 8 mol adduct of alcohol having 9 to 11 carbon atoms)
* Nonionic surfactant 3: polyoxyethylene alkyl ether (manufactured by Nippon Shokubai Co., Ltd./Product name: Softanol 90 / addition product of 9 mol ethylene oxide of secondary alcohol having 12 to 14 carbon atoms)
* Nonionic surfactant 4: Polyoxyethylene alkylphenyl ether (Daiichi Kogyo Seiyaku Co., Ltd./Product name: Neugen EA-120 / Polyoxyethylene nonylphenyl ether)
* TAED: Tetraacetylethylenediamine
[0043]
Furthermore, in order to explain this invention in detail, the effect at the time of diluting a bleaching detergent composition with hard water is described.
(3) Preparation of test bleach detergent composition 2
Examples shown in Tables 5-6 16 ~ 2 0, reference example 6 and Comparative Examples 8-12 were prepared and subjected to various tests.
In addition, the numerical value of each component in a table | surface is the appearance (mass%) of each component, and the sum of component (A)-(E) and an arbitrary component is 100 mass% on the whole.
Moreover, the anionic surfactant and nonionic surfactant of the Example in a table | surface and a comparative example are the same as what was shown by Tables 1-4.
[0044]
(4) About the obtained various bleaching detergent composition, about the test item of bleaching effect, detergency, and scale formation inhibitory power, it evaluates with the following test methods and criteria, and the result is combined with Tables 5-6. Indicated.
[0045]
(4-1) Bleaching effect 2
[Creating contaminated cloth]
20 g of powdered tea is added to 1000 ml of tap water, boiled for 1 hour, filtered with gauze, cooled to room temperature, and made into a green tea solution. On the other hand, a saturated aqueous solution of calcium hydroxide is prepared and used as a fixing solution. A cotton broad # 60 cloth is dipped in green tea solution for 5 minutes, then dipped in fixer solution for 5 minutes, washed with water and dried. This process is repeated three times to create a green tea contaminated cloth.
[Test method]
-Preparation of artificial hard water: 380 mg of magnesium sulfate heptahydrate, 732 mg of sodium hydrogen carbonate, and 494 mg of calcium chloride are dissolved in 2000 ml of distilled water to prepare 300 ppm of artificial hard water.
Preparation of iron ion-containing artificial hard water: Iron sulfate (2) ammonium hexahydrate (5 mg) is dissolved in the artificial hard water to prepare iron ion-containing artificial hard water.
To 500 ml of each composition solution at a water temperature of 60 ° C. prepared to 1% by mass using the artificial hard water prepared above or iron ion-containing artificial hard water or distilled water, the green tea-contaminated cloth (5 cm × 5 cm) prepared above is used for 3 minutes. After soaking, it is taken out, washed with water and dried naturally. The whiteness is measured with a color difference meter, and the bleaching rate is determined by the following equation.
[Calculation of bleaching effect]
Bleaching rate (%) = (whiteness after bleaching−whiteness before bleaching) / (whiteness of white cloth before contamination−whiteness before bleaching) × 100
Evaluation was made according to the following criteria.
A: Bleaching rate of 80% or more
○: Bleaching rate of 65% or more
Δ: Bleaching rate 50% or more
X: Bleaching rate less than 50%
[0046]
(4-2) Detergency 2
[Test method]
Oil stain: A mixed oil prepared by mixing soybean oil and beef tallow at a weight ratio of 1: 1 was heated at 220 ° C. for 10 hours with stirring and prepared. After cooling to about 50 ° C., 0.3 g is taken on a test piece of a stainless steel plate, spread evenly and left at room temperature for 2 hours to solidify.
-Egg dirt: Divide raw eggs into yolk and egg white and filter each with gauze. The filtered egg yolk and egg white are mixed at a weight ratio of 4: 6, 0.6 g is taken on a test piece of a stainless steel plate, spread evenly and left at room temperature for 3 hours to dry.
-Starch dirt: A mixture of fresh powder and distilled water at a weight ratio of 1: 9, and heated to 70 ° C with stirring for 30 minutes to form a paste. Take 0.6g on a test piece of stainless steel plate, spread it evenly and leave it at room temperature for 3 hours to dry.
-Preparation of artificial hard water: 380 mg of magnesium sulfate heptahydrate, 732 mg of sodium hydrogen carbonate, and 494 mg of calcium chloride are dissolved in 2000 ml of distilled water to prepare 300 ppm of artificial hard water.
The three types of test pieces prepared above are separately immersed for a predetermined time in 200 ml of each composition solution having a water temperature of 40 ° C. prepared to 1% by mass using artificial hard water or distilled water prepared as described above. The soaking time is 10 minutes for oil and egg stains and 20 minutes for starch stains. Then remove and rinse in still water and let it air dry. The detergency was evaluated according to the following criteria by the removal weight of dirt and visual observation.
[Evaluation criteria]
A: 90% or more is removed.
○: 70% or more is removed.
Δ: 50% or more is removed.
X: Only less than 50% is removed.
[0047]
(4-3) Scale generation suppression power 2
[Test method]
After completion of the detergency test of (4-2), it is allowed to cool at room temperature overnight. Discard the aqueous solution in the glass bottle and wash the glass bottle with water. The appearance of the inner wall of the glass bottle was visually observed and the touch when touched with a fingertip was evaluated according to the following criteria.
[Evaluation criteria]
A: No adhesion of scale to the inner wall of the glass bottle is observed.
○: The scale is hardly adhered to the inner wall of the glass bottle by visual observation, but is rough when touched with a fingertip.
(Triangle | delta): The adhesion of a scale is visually recognized on the inner wall of a glass bottle.
X: The scale adheres significantly to the inner wall of the glass bottle.
[0048]
[Table 5]
Figure 0004263860
[0049]
[Table 6]
Figure 0004263860
[0050]
Examples 1-2 which are powder bleach detergent compositions of the present invention 0 In Table 1, it can be seen that good performance is exhibited in any of the test items of bleaching effect, detergency, scale formation inhibitory force, corrosion prevention property, stability of active oxygen in aqueous solution, and storage stability.
[0051]
Comparative Examples 1-3 and Comparative Examples 8-9 are cases where poly-α-hydroxyacrylate is not included. From Comparative Examples 1 to 3, it can be seen that there is a problem in the stability and storage stability of active oxygen in an aqueous solution, and that the use method of immersion bleaching for tableware, cooking utensils and the like cannot exhibit a sufficient effect. It can also be seen that the cleaning power is not sufficient. Further, Comparative Examples 8 to 9 show that the bleaching effect is inferior when iron ions are present in the aqueous solution, and that the scale formation inhibitory power is inferior when soil components are present in the aqueous solution after the detergency test. .
[0052]
Comparative Examples 3 to 4 and Comparative Examples 9 to 10 are cases where the polyacrylate and / or the salt of the copolymer of polyacrylic acid and maleic acid are not included, and it is found that the scale formation inhibiting power is poor. . In particular, in Comparative Examples 9 to 10, it can be seen that scales are remarkably produced when dirt components are present in the aqueous solution after the detergency test, and the practicality cannot be endured.
[0053]
Comparative Example 5 and Comparative Example 11 are cases where no surfactant is contained, and it is understood that the bleaching effect and the detergency are poor. Moreover, the comparative example 6 and the comparative example 12 are cases where content of carbonate contains less than 10 mass%, and it turns out that it is inferior to a bleaching effect and detergency. Comparative Example 7 is a case of a conventional bleaching composition in which a bleaching activator (tetraacetylethylenediamine) is blended. By adding a bleaching activator to the product of the present invention, scale generation inhibiting power and washing object It can be seen that the corrosion-preventing property of the deteriorated.
[0054]
【The invention's effect】
The powder bleach composition of the present invention is suitably used for bleaching tableware, cooking utensils, etc., and is excellent in storage stability of the composition and stability of active oxygen in an aqueous solution, as well as in inhibiting scale formation and covering. It has excellent anti-corrosion properties for washing products, and excellent bleaching effect and detergency regardless of the amount of hardness components such as calcium and magnesium contained in the aqueous solution.

Claims (5)

(A)過酸素化合物25〜85質量%、(B)ポリ−α−ヒドロキシアクリル酸及び/又はその塩0.3〜2.5質量%、(C)アクリル酸マレイン酸との共重合体である高分子重合体0.5〜質量%、(D)陰イオン界面活性剤及び/又は非イオン界面活性剤0.4〜2質量%及び(E)炭酸塩10〜25質量%を含有し、漂白活性化剤を含有せず、食器・調理器具等の漂白洗浄用用途であることを特徴とする粉末漂白洗浄剤組成物。(A) a peroxygen compound 25 to 85 wt%, (B) poly -α- hydroxy acrylic acid and / or salts thereof 0.3 to 2.5 wt%, (C) a copolymer of acrylic acid and maleic acid 0.5 to 3 % by mass of a high molecular polymer, (D) 0.4 to 2% by mass of an anionic surfactant and / or nonionic surfactant and (E) 10 to 25 % by mass of carbonate And a bleaching powder composition for bleaching, which does not contain a bleach activator and is used for bleach cleaning of tableware, cooking utensils and the like. (A)成分の過酸素化合物が過炭酸ナトリウムである請求項1記載の粉末漂白洗浄剤組成物。  The powder bleach detergent composition according to claim 1, wherein the peroxygen compound of component (A) is sodium percarbonate. (B)成分のポリ−α−ヒドロキシアクリル酸及び/又はその塩が、ポリ−α−ヒドロキシアクリル酸ナトリウムである請求項1又は2記載の粉末漂白洗浄剤組成物。  The powder bleach detergent composition according to claim 1 or 2, wherein the poly-α-hydroxyacrylic acid and / or salt thereof as component (B) is sodium poly-α-hydroxyacrylate. (C)成分の高分子重合体の平均分子量が、50,000〜80,000の範囲である請求項1〜3のいずれか一項に記載の粉末漂白洗浄剤組成物。The powder bleach cleaning composition according to any one of claims 1 to 3, wherein the high molecular weight polymer of component (C) is in the range of 50,000 to 80,000 . (D)成分の界面活性剤が、非イオン界面活性剤である請求項1〜4のいずれか一項に記載の粉末漂白洗浄剤組成物。(D) Component surfactant is a nonionic surfactant, The powder bleach detergent composition as described in any one of Claims 1-4.
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JP2978276B2 (en) * 1991-05-01 1999-11-15 花王株式会社 Bleach composition
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JP2831920B2 (en) * 1993-11-16 1998-12-02 花王株式会社 Bleach detergent composition

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