GB1503129A - Process for the manufacture of suspension polymers of tetrafluoroethylene - Google Patents

Process for the manufacture of suspension polymers of tetrafluoroethylene

Info

Publication number
GB1503129A
GB1503129A GB2208276A GB2208276A GB1503129A GB 1503129 A GB1503129 A GB 1503129A GB 2208276 A GB2208276 A GB 2208276A GB 2208276 A GB2208276 A GB 2208276A GB 1503129 A GB1503129 A GB 1503129A
Authority
GB
United Kingdom
Prior art keywords
tetrafluoroethylene
manufacture
suspension polymers
modifiers
formula
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
GB2208276A
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.)
Hoechst AG
Original Assignee
Hoechst 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
Priority claimed from DE2523569A external-priority patent/DE2523569C3/en
Priority claimed from DE2617829A external-priority patent/DE2617829C2/en
Application filed by Hoechst AG filed Critical Hoechst AG
Publication of GB1503129A publication Critical patent/GB1503129A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F214/00—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
    • C08F214/18—Monomers containing fluorine
    • C08F214/26—Tetrafluoroethene
    • C08F214/262—Tetrafluoroethene with fluorinated vinyl ethers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerisation Methods In General (AREA)

Abstract

Tetrafluoroethylene is polymerised by the suspension process in the presence of modifiers. The modifiers employed are from 0.0004 to 0.0029 mol %, based on the tetrafluoroethylene, of a compound of formula I and/or II or of the formula III. Rf and n are as defined in Claim 1 or 2. The polymers prepared according to the invention can be used to produce press-sintered blocks without cracking. <IMAGE>
GB2208276A 1975-05-28 1976-05-27 Process for the manufacture of suspension polymers of tetrafluoroethylene Expired GB1503129A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2523569A DE2523569C3 (en) 1975-05-28 1975-05-28 Process for the polymerization of tetrafluoroethylene by the suspension process
DE2617829A DE2617829C2 (en) 1976-04-23 1976-04-23 Process for the preparation of suspension polymers of tetrafluoroethylene

Publications (1)

Publication Number Publication Date
GB1503129A true GB1503129A (en) 1978-03-08

Family

ID=25768947

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2208276A Expired GB1503129A (en) 1975-05-28 1976-05-27 Process for the manufacture of suspension polymers of tetrafluoroethylene

Country Status (16)

Country Link
JP (1) JPS5931524B2 (en)
AT (1) AT343359B (en)
AU (1) AU502321B2 (en)
CA (1) CA1097842A (en)
CH (1) CH623064A5 (en)
DD (1) DD125632A5 (en)
DK (1) DK230976A (en)
ES (1) ES448136A1 (en)
FR (1) FR2312515A1 (en)
GB (1) GB1503129A (en)
IE (1) IE42823B1 (en)
IT (1) IT1060683B (en)
LU (1) LU75027A1 (en)
NL (1) NL189566C (en)
SE (1) SE7605941L (en)
YU (1) YU130176A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544040C2 (en) * 1975-10-02 1981-09-24 Hoechst Ag, 6000 Frankfurt Process for the production of modified tetrafluoroethylene dispersion polymers
EP0002809B1 (en) * 1977-12-27 1981-10-14 Hoechst Aktiengesellschaft Fluorised thermoplastic polymer
EP0583481B1 (en) * 1992-02-05 1999-11-10 Daikin Industries, Ltd. Polytetrafluoroethylene powder for molding

Also Published As

Publication number Publication date
IE42823B1 (en) 1980-10-22
DD125632A5 (en) 1977-05-04
NL189566B (en) 1992-12-16
SE7605941L (en) 1976-11-29
FR2312515A1 (en) 1976-12-24
NL189566C (en) 1993-05-17
ATA386976A (en) 1977-09-15
CH623064A5 (en) 1981-05-15
JPS51146590A (en) 1976-12-16
AT343359B (en) 1978-05-26
YU130176A (en) 1982-06-30
IE42823L (en) 1976-11-28
AU1434576A (en) 1977-12-01
AU502321B2 (en) 1979-07-19
IT1060683B (en) 1982-08-20
JPS5931524B2 (en) 1984-08-02
NL7605469A (en) 1976-11-30
LU75027A1 (en) 1977-02-14
DK230976A (en) 1976-11-29
CA1097842A (en) 1981-03-17
ES448136A1 (en) 1977-11-01
FR2312515B1 (en) 1980-09-12

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Legal Events

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

Effective date: 19940527