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GB1355383A - Process for the manufacture of foamed cross-linked polyolefin - Google Patents

Process for the manufacture of foamed cross-linked polyolefin

Info

Publication number
GB1355383A
GB1355383A GB3650171A GB3650171A GB1355383A GB 1355383 A GB1355383 A GB 1355383A GB 3650171 A GB3650171 A GB 3650171A GB 3650171 A GB3650171 A GB 3650171A GB 1355383 A GB1355383 A GB 1355383A
Authority
GB
United Kingdom
Prior art keywords
linked polyolefin
cross
blowing
blowing agent
foamed
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
GB3650171A
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.)
Sanwa Kako Co Ltd
Original Assignee
Sanwa Kako Co Ltd
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 Sanwa Kako Co Ltd filed Critical Sanwa Kako Co Ltd
Publication of GB1355383A publication Critical patent/GB1355383A/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
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment

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)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

1355383 Foaming a cross-linked polyolefin SANWA KAKO CO Ltd 3 Aug 1971 [12 Aug 1970] 36501/71 Heading C3C A process for the production of a foamed cross-linked polyolefin comprises adding a blowing agent to a cross-linked polyolefin, milling the resulting blend at an elevated temperature to disperse the blowing agent homogeneously, and blowing the milled blend at an elevated temperature. The polyolefin may be a homo- or co-polymer of an olefin and crosslinking may have been effected by an organic peroxide or ionizing radiation. The blowing step may be carried out under superatmospheric pressure. In the examples polyethylene is crosslinked by α-dicumyl peroxide and the blowing agent used is azodicarbonamide. In Example 2 the polyethylene is foamed whilst it is crosslinked with dinitrosopentamethylenetetramine and the product is milled to eliminate the foam structure before adding the azodicarbonamide.
GB3650171A 1970-08-12 1971-08-03 Process for the manufacture of foamed cross-linked polyolefin Expired GB1355383A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45070001A JPS4829863B1 (en) 1970-08-12 1970-08-12

Publications (1)

Publication Number Publication Date
GB1355383A true GB1355383A (en) 1974-06-05

Family

ID=13418922

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3650171A Expired GB1355383A (en) 1970-08-12 1971-08-03 Process for the manufacture of foamed cross-linked polyolefin

Country Status (4)

Country Link
JP (1) JPS4829863B1 (en)
CA (1) CA943700A (en)
DE (1) DE2140525B2 (en)
GB (1) GB1355383A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0002311A2 (en) * 1977-10-24 1979-06-13 Imperial Chemical Industries Plc Making undercut mouldings
EP0040934A1 (en) * 1980-05-19 1981-12-02 Uniroyal, Inc. Expandable thermoplastic composition and method for preparing an expandable article therefrom
EP0086620A1 (en) * 1982-02-09 1983-08-24 Montedison S.p.A. Polymeric compositions suitable for the manufacture of foamed articles, and a process for preparing the same
CN109734981A (en) * 2018-11-30 2019-05-10 金旸（厦门）新材料科技有限公司 A kind of rotational moulding crosslinked foaming polyethylene and preparation method thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2834965C3 (en) * 1977-08-15 1986-04-17 Asahi Kasei Kogyo K.K., Osaka Process for the production of finely divided foamed particles from crosslinked olefin polymer, the finely divided foamed particles and their use for the production of molded parts
US4230759A (en) * 1978-08-09 1980-10-28 Armstrong Cork Company Process of forming an embossed surface covering
DE3626349A1 (en) * 1986-08-04 1988-02-11 Dynamit Nobel Ag Moulding composition for a crosslinked foam for sound insulation applications, comprising polyolefins and ethylene-propylene rubber, and process for the production of the foam

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0002311A2 (en) * 1977-10-24 1979-06-13 Imperial Chemical Industries Plc Making undercut mouldings
EP0002311A3 (en) * 1977-10-24 1979-07-11 Imperial Chemical Industries Plc Making undercut mouldings
EP0040934A1 (en) * 1980-05-19 1981-12-02 Uniroyal, Inc. Expandable thermoplastic composition and method for preparing an expandable article therefrom
EP0086620A1 (en) * 1982-02-09 1983-08-24 Montedison S.p.A. Polymeric compositions suitable for the manufacture of foamed articles, and a process for preparing the same
CN109734981A (en) * 2018-11-30 2019-05-10 金旸（厦门）新材料科技有限公司 A kind of rotational moulding crosslinked foaming polyethylene and preparation method thereof

Also Published As

Publication number Publication date
DE2140525A1 (en) 1972-02-17
DE2140525B2 (en) 1977-04-28
JPS4829863B1 (en) 1973-09-13
CA943700A (en) 1974-03-12

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Legal Events

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