GB1427204A - Production of foamed cross-linked copolymers - Google Patents

Production of foamed cross-linked copolymers

Info

Publication number
GB1427204A
GB1427204A GB4207273A GB4207273A GB1427204A GB 1427204 A GB1427204 A GB 1427204A GB 4207273 A GB4207273 A GB 4207273A GB 4207273 A GB4207273 A GB 4207273A GB 1427204 A GB1427204 A GB 1427204A
Authority
GB
United Kingdom
Prior art keywords
production
linked copolymers
foamed cross
polyethylene
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
GB4207273A
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.)
SnamProgetti SpA
Original Assignee
SnamProgetti SpA
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 SnamProgetti SpA filed Critical SnamProgetti SpA
Publication of GB1427204A publication Critical patent/GB1427204A/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
    • 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
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/08—Copolymers of ethene

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)
  • Graft Or Block Polymers (AREA)

Abstract

A process for producing expanded polyethylene is described. The starting material used is a polyethylene modified by the presence of uniformly distributed unsaturation along the macromolecular chain. The product obtained shows excellent resistance to chemical and atmospheric agents, low water absorption, high water vapour impermeability and good heat stability.
GB4207273A 1972-09-18 1973-09-06 Production of foamed cross-linked copolymers Expired GB1427204A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2932972A IT967569B (en) 1972-09-18 1972-09-18 PROCESS TO OBTAIN EXPANDED POLYETHYLENE AND PRODUCT THUS OBTAINED

Publications (1)

Publication Number Publication Date
GB1427204A true GB1427204A (en) 1976-03-10

Family

ID=11226777

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4207273A Expired GB1427204A (en) 1972-09-18 1973-09-06 Production of foamed cross-linked copolymers

Country Status (9)

Country Link
JP (1) JPS5321427B2 (en)
BE (1) BE804939A (en)
CH (1) CH614222A5 (en)
CS (1) CS185213B2 (en)
FR (1) FR2200306B1 (en)
GB (1) GB1427204A (en)
IT (1) IT967569B (en)
LU (1) LU68432A1 (en)
NL (1) NL7312851A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54125262A (en) * 1978-03-22 1979-09-28 Nitto Electric Ind Co Ltd Sealing medium

Also Published As

Publication number Publication date
CS185213B2 (en) 1978-09-15
LU68432A1 (en) 1973-11-26
BE804939A (en) 1974-01-16
FR2200306B1 (en) 1976-11-19
JPS4969782A (en) 1974-07-05
IT967569B (en) 1974-03-11
CH614222A5 (en) 1979-11-15
JPS5321427B2 (en) 1978-07-03
NL7312851A (en) 1974-03-20
FR2200306A1 (en) 1974-04-19

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee