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EP0192397A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Blends of poly(arylene ether ketones) and tetrafluoroethylene copolymers

Assignee: Raychem Corp
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Filing: 1986-02-11
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Granted: —
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Expires: 2006-02-11
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Abstract

Abstract The invention relates to novel compositions comprising an admixture of a) a semi-crystalline, thermoplastic poly(arylene ether ketone) having a crystalline melting point above about 320°C and b) a substantially non-crystalline fluorocarbon polymer capable of withstanding temperature above about 320°C for at least about 5 minutes without substantial degradation, said fluorocarbon polymer comprising a copolymer of tetrafluoroethylene wherein the tetrafluoroethylene content of the copolymer is about 5 to about 85% by weight based on the weight of the copolymer, said composition being capable of being melt processed at a temperature above the crystalline melting point of the poly(arylene ether ketone). The compositions exhibit high temperature processability, resistance to solvents, and improved dielectric properties. The compositions can be further used as substrate coatings or formed into articles.

Inventors

  • 👤 Marianne Petersen

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-04 22:31
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/18; C08L65/00; C08L71/00

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 95 words
A composition comprising an admixture of a) a semi-crystalline, thermoplastic poly(arylene ether ketone) having a crystalline melting point above about 320°C and b) a substantially non-crystalline fluorocarbon polymer capable of withstanding temperature above about 320°C for at least about 5 minutes without substantial degradation, said fluorocarbon polymer comprising a copolymer of tetrafluoroethylene wherein the tetrafluoroethylene content of the copolymer is about 5 to about 85% by weight based on the weight of the copolymer, said composition being capable of being melt processed at a temperature above the crystalline melting point of the poly(arylene ether ketone).
Claim 2
Dependent Claim 95 words
A composition comprising an admixture of a) a semi-crystalline, thermoplastic poly(arylene ether ketone) having a crystalline melting point above about 320°C and b) a substantially non-crystalline fluorocarbon polymer capable of withstanding temperature above about 320°C for at least about 5 minutes without substantial degradation, said fluorocarbon polymer comprising a copolymer of tetrafluoroethylene wherein the tetrafluoroethylene content of the copolymer is about 5 to about 85% by weight based on the weight of the copolymer, said composition being capable of being melt processed at a temperature above the crystalline melting point of the poly(arylene ether ketone).
Claim 3
Dependent Claim 15 words
A composition according to Claim 1, wherein the poly(arylene ether ketone) is a continuous phase.
Claim 4
Dependent Claim 18 words
A composition in accordance with Claim 2, wherein the fluorocarbon polymer is dispersed in the poly(arylene ether ketone).
Claim 5
Dependent Claim 25 words
A composition according to claim 1 wherein the fluorocarbon polymer comprises copolymers of tetrafluoroethylene and a) propylene; b) perfluoroalkylvinylether; and c) vinylidene fluoride and hexafluoropropylene.
Claim 6
Dependent Claim 10 words
A composition according to claim 1 which has been crosslinked.
Claim 7
Dependent Claim 15 words
A composition according to claim 1 wherein the poly(arylene ether ketone) is of the formula:
Claim 8
Dependent Claim 15 words
A composition according to claim 1 wherein the poly(arylene ether ketone) is of the formula:
Claim 9
Dependent Claim 19 words
A composition in accordance with any of the proceeding claims, which is in the form of a shaped article.
Claim 10
Dependent Claim 15 words
A composition according to claim 8 which is in the form of a valve seat.
Claim 11
Dependent Claim 18 words
A substrate having on the surface thereof a coating comprising a composition according to any of Claims 1-7.
Claim 12
Dependent Claim 19 words
A substrate having on the surface thereof a coating according to claim 10 wherein the substrate is a wire.

References Cited (Backward Citations)

EP0051933A2 Cited
EP0053778A1 Cited
EP0100889A1 Cited

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