GB903564A - Process for making foamed styrene polymers - Google Patents

Process for making foamed styrene polymers

Info

Publication number
GB903564A
GB903564A GB4199260A GB4199260A GB903564A GB 903564 A GB903564 A GB 903564A GB 4199260 A GB4199260 A GB 4199260A GB 4199260 A GB4199260 A GB 4199260A GB 903564 A GB903564 A GB 903564A
Authority
GB
United Kingdom
Prior art keywords
styrene
polymers
mixture
hydrated inorganic
foamable mixture
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
Application number
GB4199260A
Inventor
William Joseph Hanson
Theodore Charles Wallace
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB903564A publication Critical patent/GB903564A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/125—Water, e.g. hydrated salts
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2325/02—Homopolymers or copolymers of hydrocarbons
    • C08J2325/04—Homopolymers or copolymers of styrene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Foams are produced from thermoplastic organic polymers using as the expanding agent a hydrated inorganic salt or mixture thereof capable of evolving water of crystallization at the plastifying temperature of the polymer. Polymers operable in the process are homopolymers of styrene, copolymers of styrene and minor amounts of acrylonitrile or methyl methacrylate and blends of styrene polymers with 2-15% of one or more rubbery butadiene-styrene polymers. Numerous hydrated inorganic salts are specified; those used in the examples are Al2(SO4)3 18H2O, Al2(SO4)3 K2SO4 24H2O and Na2S2O3 5H2O. Optionally nucleating agents, e.g. finely divided aluminium oxide, calcium silicate, diatomaceous earth, sodium bicarbonate, magnesium carbonate, calcium carbonate, zinc oxide and titanium dioxide, and liquid plasticizers, e.g. white mineral oil, soy bean oil and butyl stearate may be added to the foamable mixture. The various ingredients of the foamable mixture are blended together and extruded at temperatures from about 140 DEG to 160 DEG C.ALSO:Foams are produced from thermoplastic organic polymers using as the expanding agent a hydrated inorganic salt or mixture thereof capable of evolving water of crystallisation at the plastifying temperature of the polymer. Polymers operable in the process are homopolymers of styrene, copolymers of styrene and a minor amount of acrylonitrile or methyl methacrylate and blends of styrene polymers with from 2 to 15% of one or more rubbery butadiene-styrene polymers. Numerous hydrated inorganic salts are specified; those used in the examples are Al2(SO4)3,18H2O, Al2(SO4)3,K2SO4,24H2O and Na2S2O3,5H2O. Optionally nucleating agents, e.g. finely divided aluminium oxide, calcium silicate, diatomaceous earth, sodium bicarbonate, magnesium carbonate, calcium carbonate, zinc oxide and titanium dioxide, and liquid plasticizers, e.g. white mineral oil, soy bean oil and butyl stearate may be added to the foamable mixture. The various ingredients of the foamable mixture are blended together and extruded at temperatures from about 140 to 160 DEG C.
GB4199260A 1959-12-10 1960-12-06 Process for making foamed styrene polymers Expired GB903564A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85858859A 1959-12-10 1959-12-10

Publications (1)

Publication Number Publication Date
GB903564A true GB903564A (en) 1962-08-15

Family

ID=25328655

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4199260A Expired GB903564A (en) 1959-12-10 1960-12-06 Process for making foamed styrene polymers

Country Status (4)

Country Link
DE (1) DE1178206B (en)
ES (1) ES263156A1 (en)
FR (1) FR1282128A (en)
GB (1) GB903564A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3300419A (en) * 1963-07-15 1967-01-24 Evans Prod Co Phenolic resin cellular materials and method for making same
US3309439A (en) * 1964-11-06 1967-03-14 Lakeside Plastics Corp Method of producing an expanded polystyrene foam having a dense surface
US3375209A (en) * 1964-05-25 1968-03-26 Charles R. Kemper Porous film and method of making
US3404104A (en) * 1964-12-21 1968-10-01 Phillips Petroleum Co Polyolefin foam
US3457205A (en) * 1963-12-19 1969-07-22 Lakeside Plastics Corp Composition for making coated expanded polystyrene foam
US4304874A (en) * 1980-05-06 1981-12-08 Arco Polymers, Inc. Fire-retardant anhydride copolymers
US4330635A (en) * 1980-04-04 1982-05-18 Monsanto Company Foamable polymeric composition
US4407768A (en) * 1982-01-08 1983-10-04 Phillips Petroleum Company Foamable polymeric composition comprising propylene polymer and hydrated alumina
EP0860465A1 (en) * 1997-02-21 1998-08-26 Dsm N.V. Foamed thermoplastic elastomeric article
WO1998037131A1 (en) * 1997-02-21 1998-08-27 Dsm N.V. Foamed thermo-elastic article
WO1999067322A1 (en) * 1998-06-23 1999-12-29 Dsm N.V. Foamed thermoplastic elastomer article and process for its manufacturing
CN106317445A (en) * 2015-06-29 2017-01-11 北京化工大学 Supported crystalline hydrate foaming agent, and preparation method and applications thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2177584B1 (en) * 1972-03-30 1974-12-20 Charbonnages Ste Chimique
DE3131446A1 (en) * 1981-08-07 1983-02-24 Basf Ag, 6700 Ludwigshafen METHOD FOR THE PRODUCTION OF FINE-CELLED FOAMS FROM STYRENE POLYMERS

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2911382A (en) * 1956-09-21 1959-11-03 Monsanto Chemicals Process of making extruded styrene polymer foams

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3300419A (en) * 1963-07-15 1967-01-24 Evans Prod Co Phenolic resin cellular materials and method for making same
US3457205A (en) * 1963-12-19 1969-07-22 Lakeside Plastics Corp Composition for making coated expanded polystyrene foam
US3375209A (en) * 1964-05-25 1968-03-26 Charles R. Kemper Porous film and method of making
US3309439A (en) * 1964-11-06 1967-03-14 Lakeside Plastics Corp Method of producing an expanded polystyrene foam having a dense surface
US3404104A (en) * 1964-12-21 1968-10-01 Phillips Petroleum Co Polyolefin foam
US4330635A (en) * 1980-04-04 1982-05-18 Monsanto Company Foamable polymeric composition
US4304874A (en) * 1980-05-06 1981-12-08 Arco Polymers, Inc. Fire-retardant anhydride copolymers
US4407768A (en) * 1982-01-08 1983-10-04 Phillips Petroleum Company Foamable polymeric composition comprising propylene polymer and hydrated alumina
EP0860465A1 (en) * 1997-02-21 1998-08-26 Dsm N.V. Foamed thermoplastic elastomeric article
WO1998037131A1 (en) * 1997-02-21 1998-08-27 Dsm N.V. Foamed thermo-elastic article
US6242502B1 (en) 1997-02-21 2001-06-05 Dsm N.V. Foamed thermo-elastic article
WO1999067322A1 (en) * 1998-06-23 1999-12-29 Dsm N.V. Foamed thermoplastic elastomer article and process for its manufacturing
US6548562B2 (en) 1998-06-23 2003-04-15 Dsm N.V. Foamed thermo-elastic article
CN106317445A (en) * 2015-06-29 2017-01-11 北京化工大学 Supported crystalline hydrate foaming agent, and preparation method and applications thereof
CN106317445B (en) * 2015-06-29 2019-01-15 北京化工大学 A kind of supported crystalline hydrate foaming agent, preparation method and application

Also Published As

Publication number Publication date
FR1282128A (en) 1962-01-19
DE1178206B (en) 1964-09-17
ES263156A1 (en) 1961-03-01

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