Patent ID: 8263708
Filing Date: 2012-09-11
Classification: C08L,C09K

Abstract:
1. A sealing article comprising a vulcanized (per)fluoroelastomer composition incorporating particles of a semicrystalline thermoplastic fluoropolymer chosen from vinylidene fluoride (VDF) homopolymers and copolymers of VDF with one or more monomers containing at least one unsaturation of ethylenic type, in which the sum of the comonomers other than VDF is ≦15 mol % relative to the total amount of monomers in the copolymer, the amount of semicrystalline thermoplastic fluoropolymer being between 30% and 90% by weight relative to the total weight of the (per)fluoroelastomer and of the semicrystalline thermoplastic fluoropolymer, the vulcanized composition having a Shore A hardness of at least 85 when determined according to ASTM D 2240 Type A Durometer method, and a compression set of less than 30%, when determined according to ASTM D395 at 200° C. for 70 h on O-ring according to ASTM D1414.