GB1494263A - Process for the preparation of expandable aromatic vinyl polymer particles - Google Patents
Process for the preparation of expandable aromatic vinyl polymer particlesInfo
- 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
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.
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5222781B2 (en) * | 1973-12-17 | 1977-06-20 |
-
1974
- 1974-06-03 JP JP6333674A patent/JPS553368B2/ja not_active Expired
-
1975
- 1975-04-23 NL NL7504811A patent/NL7504811A/en not_active Application Discontinuation
- 1975-05-20 FR FR7515650A patent/FR2273034B1/fr not_active Expired
- 1975-05-23 GB GB2300275A patent/GB1494263A/en not_active Expired
- 1975-05-28 CA CA227,921A patent/CA1040800A/en not_active Expired
- 1975-05-29 BE BE7000667A patent/BE829686A/en unknown
- 1975-05-30 IT IT2389475A patent/IT1038591B/en active
Also Published As
Publication number | Publication date |
---|---|
FR2273034B1 (en) | 1977-07-08 |
NL7504811A (en) | 1975-12-05 |
DE2518963B2 (en) | 1977-04-21 |
CA1040800A (en) | 1978-10-17 |
BE829686A (en) | 1975-09-15 |
IT1038591B (en) | 1979-11-30 |
FR2273034A1 (en) | 1975-12-26 |
JPS50154366A (en) | 1975-12-12 |
DE2518963A1 (en) | 1975-12-04 |
JPS553368B2 (en) | 1980-01-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |