GB1297596A - - Google Patents
Info
- Publication number
- GB1297596A GB1297596A GB1297596DA GB1297596A GB 1297596 A GB1297596 A GB 1297596A GB 1297596D A GB1297596D A GB 1297596DA GB 1297596 A GB1297596 A GB 1297596A
- Authority
- GB
- United Kingdom
- Prior art keywords
- compounds
- represent hydrogen
- formula
- independently represent
- halogen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B11/00—Diaryl- or thriarylmethane dyes
- C09B11/04—Diaryl- or thriarylmethane dyes derived from triarylmethanes, i.e. central C-atom is substituted by amino, cyano, alkyl
- C09B11/10—Amino derivatives of triarylmethanes
- C09B11/24—Phthaleins containing amino groups ; Phthalanes; Fluoranes; Phthalides; Rhodamine dyes; Phthaleins having heterocyclic aryl rings; Lactone or lactame forms of triarylmethane dyes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
- B41M5/132—Chemical colour-forming components; Additives or binders therefor
- B41M5/136—Organic colour formers, e.g. leuco dyes
- B41M5/145—Organic colour formers, e.g. leuco dyes with a lactone or lactam ring
- B41M5/1455—Organic colour formers, e.g. leuco dyes with a lactone or lactam ring characterised by fluoran compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Color Printing (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1297596 Fluoran compounds NISSO KAKO CO Ltd 19 April 1971 [24 March 1970] 25112/71 Heading C4P [Also in Division D2] The invention comprises fluoran compounds of the general formula wherein R 1 , R 2 and R 5 independently represent hydrogen, halogen or alkyl, provided that all 3 do not represent hydrogen; and R 3 and R 4 independently represent hydrogen or a substituted or unsubstituted benzyl or 1-naphthylmethyl group. Suitable substituents are halogen atoms or alkyl groups. The compounds are prepared by heating a compound of formula together with a p-aminophenol of formula in the presence of sulphuric acid. The compounds are used as colour-forming components in pressure-sensitive copying papers.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP45024074A JPS4934044B1 (en) | 1970-03-24 | 1970-03-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1297596A true GB1297596A (en) | 1972-11-22 |
Family
ID=12128262
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1297596D Expired GB1297596A (en) | 1970-03-24 | 1971-04-19 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS4934044B1 (en) |
DE (1) | DE2113995C3 (en) |
GB (1) | GB1297596A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4226912A (en) * | 1978-02-15 | 1980-10-07 | Kanzaki Paper Manufacturing Co., Ltd. | Heat-sensitive recording material |
US4274660A (en) * | 1979-05-14 | 1981-06-23 | Sterling Drug Inc. | Carbonless duplicating and marking systems |
US4341403A (en) * | 1979-04-24 | 1982-07-27 | Fuji Photo Film Co., Ltd. | Fluoran compounds, process for preparation thereof, and recording sheets using same |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5122415B2 (en) * | 1972-01-22 | 1976-07-09 |
-
1970
- 1970-03-24 JP JP45024074A patent/JPS4934044B1/ja active Pending
-
1971
- 1971-03-23 DE DE19712113995 patent/DE2113995C3/en not_active Expired
- 1971-04-19 GB GB1297596D patent/GB1297596A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4226912A (en) * | 1978-02-15 | 1980-10-07 | Kanzaki Paper Manufacturing Co., Ltd. | Heat-sensitive recording material |
US4341403A (en) * | 1979-04-24 | 1982-07-27 | Fuji Photo Film Co., Ltd. | Fluoran compounds, process for preparation thereof, and recording sheets using same |
US4274660A (en) * | 1979-05-14 | 1981-06-23 | Sterling Drug Inc. | Carbonless duplicating and marking systems |
Also Published As
Publication number | Publication date |
---|---|
DE2113995B2 (en) | 1973-09-13 |
DE2113995C3 (en) | 1980-05-08 |
JPS4934044B1 (en) | 1974-09-11 |
DE2113995A1 (en) | 1971-10-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
429A | Application made for amendment of specification (sect. 29/1949) | ||
PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
429H | Application (made) for amendment of specification now open to opposition (sect. 29/1949) | ||
429H | Application (made) for amendment of specification now open to opposition (sect. 29/1949) | ||
48R | Reference inserted (sect. 8/1949) | ||
429D | Case decided by the comptroller ** specification amended (sect. 29/1949) | ||
PCNP | Patent ceased through non-payment of renewal fee |