GB1264953A - - Google Patents

Info

Publication number
GB1264953A
GB1264953A GB2608068A GB1264953DA GB1264953A GB 1264953 A GB1264953 A GB 1264953A GB 2608068 A GB2608068 A GB 2608068A GB 1264953D A GB1264953D A GB 1264953DA GB 1264953 A GB1264953 A GB 1264953A
Authority
GB
United Kingdom
Prior art keywords
sheet
expanded
polymer
azodicarbonamide
unexpanded
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
GB2608068A
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 filed Critical
Publication of GB1264953A publication Critical patent/GB1264953A/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
    • C08J9/10—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 developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/56—After-treatment of articles, e.g. for altering the shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/737—Articles provided with holes, e.g. grids, sieves

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)

Abstract

1,264,953. Sheets of expanded thermoplastic polymer. FISONS INDUSTRIAL CHEMICALS Ltd. 25 July, 1969 [31 May, 1968], No. 26080/68. Headings C3C, C3P and C3R. A sheet of expanded thermoplastic polymer is made by perforating a sheet of the unexpanded polymer containing a blowing agent and subjecting the perforated sheet to a heat treatment to effect expansion. The polymer may be a polyamide, polyacrylate, polystyrene, polyvinyl chloride, or a copolymer of vinyl chloride with a vinyl ester, vinylidene chloride, acrylic acid or styrene. The blowing agent may be azodicarbonamide, or p,p<SP>1</SP>-oxybis-(benzene sulphonyl hydrazide or semicarbazide). The unexpanded sheet may be expanded by passage through a hot air oven. The examples use a mixture of polyvinyl chloride, dioctyl phthalate, diboric lead phthalate and azodicarbonamide for forming expanded sheets.
GB2608068A 1968-05-31 1968-05-31 Expired GB1264953A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2608068 1968-05-31

Publications (1)

Publication Number Publication Date
GB1264953A true GB1264953A (en) 1972-02-23

Family

ID=10238037

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2608068A Expired GB1264953A (en) 1968-05-31 1968-05-31

Country Status (1)

Country Link
GB (1) GB1264953A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520290A1 (en) * 1982-01-22 1983-07-29 Inoue Mtp Kk METHOD FOR MANUFACTURING A PROTECTIVE AND DECORATIVE MOLDING FOR A MOTOR VEHICLE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520290A1 (en) * 1982-01-22 1983-07-29 Inoue Mtp Kk METHOD FOR MANUFACTURING A PROTECTIVE AND DECORATIVE MOLDING FOR A MOTOR VEHICLE

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees