GB1494263A - Process for the preparation of expandable aromatic vinyl polymer particles - Google Patents

Process for the preparation of expandable aromatic vinyl polymer particles

Info

Publication number
GB1494263A
GB1494263A GB2300275A GB2300275A GB1494263A GB 1494263 A GB1494263 A GB 1494263A GB 2300275 A GB2300275 A GB 2300275A GB 2300275 A GB2300275 A GB 2300275A GB 1494263 A GB1494263 A GB 1494263A
Authority
GB
United Kingdom
Prior art keywords
particles
polymer
expandable
polymer particles
vinyl polymer
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
GB2300275A
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.)
Sekisui Kaseihin Kogyo KK
Sekisui Kasei Co Ltd
Original Assignee
Sekisui Plastics Co Ltd
Sekisui Kaseihin Kogyo KK
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 Sekisui Plastics Co Ltd, Sekisui Kaseihin Kogyo KK filed Critical Sekisui Plastics Co Ltd
Publication of GB1494263A publication Critical patent/GB1494263A/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
    • C08J9/16—Making expandable particles
    • C08J9/18—Making expandable particles by impregnating polymer particles with the blowing agent
    • 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

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

1494263 Preparing expandable polymer particles SEKISUI KASEIHIN KOGYO KK 23 May 1975 [3 June 1974] 23002/75 Heading C3C Expandable aromatic mono-vinyl polymer particles are made by dispersing the particles of a polymer derived from at least one aromatic monovinyl monomer in water in the presence of calcium hydroxide as suspending agent and impregnating the particles by adding to the suspension an expanding agent which does not dissolve or only swells the polymer, has a b.p. lower than the Vicat softening point of the polymer and is gaseous or liquid at ambient temperature and atmospheric pressure. In the examples polystyrene or styrene/butyl acrylate or divinylbenzene copolymer particles were suspended in water containing calcium hydroxide, in an autoclave, optionally together with tribromophenylallyl ether as flame retardant and then impregnated with n-butane or n-pentane to form expandable particles which which were pre-expanded and then moulded with steam.
GB2300275A 1974-06-03 1975-05-23 Process for the preparation of expandable aromatic vinyl polymer particles Expired GB1494263A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6333674A JPS553368B2 (en) 1974-06-03 1974-06-03

Publications (1)

Publication Number Publication Date
GB1494263A true GB1494263A (en) 1977-12-07

Family

ID=13226285

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2300275A Expired GB1494263A (en) 1974-06-03 1975-05-23 Process for the preparation of expandable aromatic vinyl polymer particles

Country Status (7)

Country Link
JP (1) JPS553368B2 (en)
BE (1) BE829686A (en)
CA (1) CA1040800A (en)
FR (1) FR2273034B1 (en)
GB (1) GB1494263A (en)
IT (1) IT1038591B (en)
NL (1) NL7504811A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5347480A (en) * 1976-10-14 1978-04-27 Kureha Chem Ind Co Ltd Method for increasing density of coagulated particles

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5222781B2 (en) * 1973-12-17 1977-06-20

Also Published As

Publication number Publication date
JPS553368B2 (en) 1980-01-24
IT1038591B (en) 1979-11-30
NL7504811A (en) 1975-12-05
BE829686A (en) 1975-09-15
FR2273034A1 (en) 1975-12-26
DE2518963B2 (en) 1977-04-21
CA1040800A (en) 1978-10-17
JPS50154366A (en) 1975-12-12
FR2273034B1 (en) 1977-07-08
DE2518963A1 (en) 1975-12-04

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Legal Events

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