GB1279764A - A process for the production of shaped bodies having cellular structure - Google Patents

A process for the production of shaped bodies having cellular structure

Info

Publication number
GB1279764A
GB1279764A GB1690570A GB1690570A GB1279764A GB 1279764 A GB1279764 A GB 1279764A GB 1690570 A GB1690570 A GB 1690570A GB 1690570 A GB1690570 A GB 1690570A GB 1279764 A GB1279764 A GB 1279764A
Authority
GB
United Kingdom
Prior art keywords
moulding
blowing agent
vinyl chloride
pressure
april
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
GB1690570A
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.)
Lonza AG
Original Assignee
Lonza AG
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 Lonza AG filed Critical Lonza AG
Publication of GB1279764A publication Critical patent/GB1279764A/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
    • C08J9/06—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 chemical blowing agent

Landscapes

  • Chemical & Material Sciences (AREA)
  • General 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)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

1279764 Cellular p.v.c. plastigels LONZA Ltd 9 April 1970 [11 April 1969] 16905/70 Heading B5A A polymeric plastigel composition containing at least 50% vinyl chloride and a blowing agent is formed into a rough moulding and placed in a pressure vessel, the pressure therein is increased and the moulding is heated to complete gelation and dissociate the blowing agent, the moulding is cooled while maintaining the pressure which is subsequently lowered, the composition being partially gelled by heating to not work more than 10‹ C. below the dissociation temperature of the blowing agent. The partial gelling may be effected before, during or after formation of the rough moulding. The plastigel may contain a vinyl chloride homopolymer or a copolymer thereof e.g. 90% vinyl chloride and 10% vinyl acetate.
GB1690570A 1969-04-11 1970-04-09 A process for the production of shaped bodies having cellular structure Expired GB1279764A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH552169A CH507338A (en) 1969-04-11 1969-04-11 Process for the production of molded bodies with a cell structure

Publications (1)

Publication Number Publication Date
GB1279764A true GB1279764A (en) 1972-06-28

Family

ID=4295010

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1690570A Expired GB1279764A (en) 1969-04-11 1970-04-09 A process for the production of shaped bodies having cellular structure

Country Status (11)

Country Link
BE (1) BE748678A (en)
CA (1) CA924858A (en)
CH (1) CH507338A (en)
DE (1) DE2012491A1 (en)
DK (1) DK127807B (en)
FR (1) FR2038394B1 (en)
GB (1) GB1279764A (en)
NL (1) NL7005206A (en)
NO (1) NO135573C (en)
SE (1) SE371775B (en)
SU (1) SU533339A3 (en)

Also Published As

Publication number Publication date
FR2038394B1 (en) 1974-07-12
NL7005206A (en) 1970-10-13
FR2038394A1 (en) 1971-01-08
SE371775B (en) 1974-12-02
NO135573C (en) 1977-04-27
CH507338A (en) 1971-05-15
SU533339A3 (en) 1976-10-25
DE2012491A1 (en) 1970-10-15
DK127807B (en) 1974-01-14
CA924858A (en) 1973-04-24
BE748678A (en) 1970-09-06
NO135573B (en) 1977-01-17

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years