EP0011853A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Vulcanizable fluorinated copolymers
Assignee: EIDP Inc
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Filing: 1979-11-27
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Granted: —
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Expires: 1999-11-27
Abstract
Abstract Vulcanizable copolymers of tetrafluoroethylene, perfluoromethyl perfluorovinyl ether and a cyano-substituted perfluorovinyl ether such as perfluoro-(8-cyano -5-methyl-3, 6-dioxa-1-octene) and perfluoro-(9-cyano -5-methyl-3, 6-dioxa-1-nonene) and elastomeric vulcanizates thereof.
Inventors
- 👤 Almut Frerichs Breazeale
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 20:07
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/18; C08F214/26; C08F214/262
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
41 words
An elastomeric copolymer comprising copolymerized units of: (a) 53-79.8 mole percent tetrafluoroethylene, (b) 20-45 mole percent perfluoromethyl perfluor- vinyl ether, and (c) 0.2-2 mole percent of a cure site monomer of the formula: where n = 1-4 and x = 1-2.
Claim 2
Dependent Claim
41 words
An elastomeric copolymer comprising copolymerized units of: (a) 53-79.8 mole percent tetrafluoroethylene, (b) 20-45 mole percent perfluoromethyl perfluor- vinyl ether, and (c) 0.2-2 mole percent of a cure site monomer of the formula: where n = 1-4 and x = 1-2.
Claim 3
Dependent Claim
28 words
The copolymer of Claim 1 wherein component monomer (a) comprises 64.4-72.6 mole percent, component monomer (b) comprises 27-35 mole percent, and component monomer (c) comprises 0.4-1.0 mole percent,
Claim 4
Dependent Claim
20 words
The copolymers of Claim 2 wherein the component monomer (c) comprises a compound of the formula: where n = 2-3.
Claim 5
Dependent Claim
14 words
The copolymer of Claim 3 wherein the component monomer (c) comprises the compound perfluoro-(8-cyano-5-methyl-3,6-dioxa-l-octene).
Claim 6
Dependent Claim
31 words
The copolymer of Claim 4 wherein component monomer (a) comprises about 69.0 mole percent, component monomer (b) comprises about 30 mole percent, and component monomer (c) comprises about 0.7 mole percent.
Claim 7
Dependent Claim
6 words
The vulcanized copolymer of Claim 1
Claim 8
Dependent Claim
6 words
The vulcanized copolymer of Claim 2.
Claim 9
Dependent Claim
6 words
The vulcanized copolymer of Claim 3.
Claim 10
Dependent Claim
6 words
The vulcanized copolymer of Claim 4.
Claim 11
Dependent Claim
6 words
The vulcanized copolymer of Claim 5.
References Cited (Backward Citations)
No citation records indexed.
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