GB1346676A - Foamable synthetic resins - Google Patents

Foamable synthetic resins

Info

Publication number
GB1346676A
GB1346676A GB4240271A GB4240271A GB1346676A GB 1346676 A GB1346676 A GB 1346676A GB 4240271 A GB4240271 A GB 4240271A GB 4240271 A GB4240271 A GB 4240271A GB 1346676 A GB1346676 A GB 1346676A
Authority
GB
United Kingdom
Prior art keywords
resin compositions
methacrylic acid
methacrylonitrile
polymer
units
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
GB4240271A
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.)
Roehm GmbH Darmstadt
Original Assignee
Roehm GmbH Darmstadt
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 Roehm GmbH Darmstadt filed Critical Roehm GmbH Darmstadt
Publication of GB1346676A publication Critical patent/GB1346676A/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
    • C08J9/02—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by the reacting monomers or modifying agents during the preparation or modification of macromolecules
    • 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
    • C08J2333/00—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers

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)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

1346676 Foamable synthetic resins ROHM GmbH 10 Sept 1971 [24 Sept 1970] 42402/71 Headings C3C and C3P Synthetic resin compositions which are capable, when heated to 150-250‹ C., of forming a foam containing acrylimide or methacrylimide units comprise (a) a polymer of acrylic and/or methacrylic acid and, if desired, a C 1-4 alkyl ester thereof, acrylonitrile, methacrylonitrile, acrylamide and/or methacrylamide, and/or, if desired, at least one further comonomer, the polymer containing up to 20% by weight of units of said further comonomer(s); (b) formic acid as a blowing agent; and, when necessary, (c) formamide, monomethylformamide, urea and/or N,N<SP>1</SP>-dimethylurea as further blowing agent, the monomer composition of the polymer of component (a) and the amount of component (c) incorporated in the said resin compositions being such that the sum of the equivalents of amide nitrogen in the said resin compositions is equal to, or differs by not more than 5% from, half the sum of the equivalents (i) carboxy group-containing monomer units in excess over any nitrile groupcontaining monomer units which may be present in the polymer; (ii) C 1-4 alkyl ester group-containing monomer units forming imide groups upon foaming of the resin compositions; and (iii) amide group-containing monomer units. The further comonomer units may be of maleic, itaconic or fumaric acid. The polymerization of said monomers may be performed by bulk polymerization using initiators such as benzoyl peroxide plus t-butyl perpivalate. A mercapto compound such as pentaerythritol tetrathioglycolate may also be present. The foamable resin compositions may also contain fire retardants, e.g. a phosphorus containing compound, a halogenated styrene or a halophenyl ester of acrylic or methacrylic acid, dyes, pigments and fillers. The examples refer to copolymers prepared from: methacrylonitrile and methacrylic acid (3); methacrylonitrile, methacrylic acid, methyl methacrylate (1, 2, 4); and methacrylonitrile, methacrylic acid and methyl methacrylate with either methacrylamide (5), acrylonitrile (6) or maleic anhydride (7-10).
GB4240271A 1970-09-24 1971-09-10 Foamable synthetic resins Expired GB1346676A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702047096 DE2047096B2 (en) 1970-09-24 1970-09-24 FOAMABLE PLASTIC

Publications (1)

Publication Number Publication Date
GB1346676A true GB1346676A (en) 1974-02-13

Family

ID=5783308

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4240271A Expired GB1346676A (en) 1970-09-24 1971-09-10 Foamable synthetic resins

Country Status (3)

Country Link
DE (1) DE2047096B2 (en)
FR (1) FR2107935B1 (en)
GB (1) GB1346676A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4576971A (en) * 1983-12-21 1986-03-18 Rohm Gmbh Flame-retarded polyacrylamide or polymethacrylimide synthetic resin foam
GB2175589A (en) * 1985-05-25 1986-12-03 Roehm Gmbh Foamable plastics
US5225449A (en) * 1991-09-13 1993-07-06 Mitsubishi Rayon Co., Ltd. Expandable plastics and their foams
CN108026309A (en) * 2015-09-28 2018-05-11 汉高股份有限及两合公司 Heat-swellable composition comprising urea derivative
US11441004B2 (en) 2015-09-28 2022-09-13 Henkel Ag & Co. Kgaa Thermally expandable compositions comprising polysaccharide

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2726259C2 (en) 1977-06-10 1985-11-28 Röhm GmbH, 6100 Darmstadt Process for the production of polyacrylic and / or polymethacrylimide foams
DE19606530C2 (en) 1996-02-22 1998-04-02 Roehm Gmbh Process for the production of polymethacrylimide foams with flame retardant additives and foams produced thereafter
KR100536845B1 (en) 2003-03-17 2005-12-14 주식회사 엘지화학 A process for preparation of polyglutarimide resin using a fluid of super critical condition
JP2007096498A (en) * 2005-09-27 2007-04-12 Pioneer Electronic Corp Diaphragm for speaker and manufacturing method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4576971A (en) * 1983-12-21 1986-03-18 Rohm Gmbh Flame-retarded polyacrylamide or polymethacrylimide synthetic resin foam
GB2175589A (en) * 1985-05-25 1986-12-03 Roehm Gmbh Foamable plastics
US5225449A (en) * 1991-09-13 1993-07-06 Mitsubishi Rayon Co., Ltd. Expandable plastics and their foams
CN108026309A (en) * 2015-09-28 2018-05-11 汉高股份有限及两合公司 Heat-swellable composition comprising urea derivative
CN108026309B (en) * 2015-09-28 2021-10-15 汉高股份有限及两合公司 Thermally expandable composition comprising urea derivatives
US11441004B2 (en) 2015-09-28 2022-09-13 Henkel Ag & Co. Kgaa Thermally expandable compositions comprising polysaccharide
US11505669B2 (en) 2015-09-28 2022-11-22 Henkel Ag & Co. Kgaa Thermally expandable compositions comprising urea derivatives

Also Published As

Publication number Publication date
DE2047096B2 (en) 1976-11-04
FR2107935B1 (en) 1974-05-31
DE2047096A1 (en) 1972-03-30
FR2107935A1 (en) 1972-05-12

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee