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GB754952A - Improvements in the manufacture of cellular compositions - Google Patents

Improvements in the manufacture of cellular compositions

Info

Publication number
GB754952A
GB754952A GB7554/54A GB755454A GB754952A GB 754952 A GB754952 A GB 754952A GB 7554/54 A GB7554/54 A GB 7554/54A GB 755454 A GB755454 A GB 755454A GB 754952 A GB754952 A GB 754952A
Authority
GB
United Kingdom
Prior art keywords
sponge
manufacture
plastic
dinitrosoterephthalimide
dinitrosopentamethylene
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
GB7554/54A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB754952A publication Critical patent/GB754952A/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
    • 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
    • C08J2327/00—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 a halogen; Derivatives of such polymers
    • C08J2327/02—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 a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/04—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 a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2327/06—Homopolymers or copolymers of vinyl chloride

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

A cellular plastic sponge is prepared by mixing a finely-divided plastic, e.g. polyvinyl chloride, with a chemical blowing agent, e.g. p-tertiary butyl benzazide, dinitrosopentamethylene-tetramine and N,N1-dimethyl N,N1-dinitrosoterephthalimide and a plasticizer, e.g. tricresyl phosphate and di-2-ethyl hexyl phthalate, bringing the mixture to an elevated temperature and holding it at this temperature until the flowing agent decomposes to form gas cells, and then heating the resulting sponge to a higher temperature sufficient to toughen the sponge. Chlorinated paraffin, citric acid, basic lead carbonate, calcium stearate, and talc may also be present. The process is preferably carried out at atmospheric pressure. Specifications 746,423 and 753,879 are referred to.
GB7554/54A 1953-03-18 1954-03-16 Improvements in the manufacture of cellular compositions Expired GB754952A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US754952XA 1953-03-18 1953-03-18

Publications (1)

Publication Number Publication Date
GB754952A true GB754952A (en) 1956-08-15

Family

ID=22126136

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7554/54A Expired GB754952A (en) 1953-03-18 1954-03-16 Improvements in the manufacture of cellular compositions

Country Status (1)

Country Link
GB (1) GB754952A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016317A (en) * 1957-06-21 1962-01-09 Brunner Emil Resilient mat
US3169088A (en) * 1957-11-18 1965-02-09 Congoleum Nairn Inc Textured foam surface covering

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016317A (en) * 1957-06-21 1962-01-09 Brunner Emil Resilient mat
US3169088A (en) * 1957-11-18 1965-02-09 Congoleum Nairn Inc Textured foam surface covering

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