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ES263156A1 - Process for making foamed styrene polymers - Google Patents

Process for making foamed styrene polymers

Info

Publication number
ES263156A1
ES263156A1 ES0263156A ES263156A ES263156A1 ES 263156 A1 ES263156 A1 ES 263156A1 ES 0263156 A ES0263156 A ES 0263156A ES 263156 A ES263156 A ES 263156A ES 263156 A1 ES263156 A1 ES 263156A1
Authority
ES
Spain
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
ES0263156A
Other languages
Spanish (es)
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 ES263156A1 publication Critical patent/ES263156A1/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12Working-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
    • C08J9/125Water, e.g. hydrated salts
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2325/00Characterised 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
    • C08J2325/02Homopolymers or copolymers of hydrocarbons
    • C08J2325/04Homopolymers 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.
ES0263156A 1959-12-10 1960-12-10 Process for making foamed styrene polymers Expired ES263156A1 (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
ES263156A1 true ES263156A1 (en) 1961-03-01

Family

ID=25328655

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0263156A Expired ES263156A1 (en) 1959-12-10 1960-12-10 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)

Families Citing this family (14)

* 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
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
FR2177584B1 (en) * 1972-03-30 1974-12-20 Charbonnages Ste Chimique
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
DE3131446A1 (en) * 1981-08-07 1983-02-24 Basf Ag, 6700 Ludwigshafen METHOD FOR THE PRODUCTION OF FINE-CELLED FOAMS FROM STYRENE POLYMERS
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
DE69906527T2 (en) * 1998-06-23 2004-04-08 Dsm N.V. FOAMED OBJECT FROM THERMOPLASTIC ELASTOMER AND METHOD FOR THE PRODUCTION 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

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

Also Published As

Publication number Publication date
GB903564A (en) 1962-08-15
DE1178206B (en) 1964-09-17
FR1282128A (en) 1962-01-19

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