Patent ID: 8110065
Filing Date: 2012-02-07
Classification: C08G,C08K,C08L,C09J

Abstract:
1. A heat-curable fluoropolyether adhesive composition, comprising: (A) 100 parts by weight of a linear polyfluoro compound of formula (1) having at least two alkenyl groups per molecule and a perfluoropolyether structure in its main chain; wherein X is —CH wherein Y is —CH 2 — or an o-, m- or p-dimethylsilylphenylene group of formula (2): and R 1 is hydrogen or a substituted or unsubstituted monovalent hydrocarbon group, X′ is —CH and R 1 is as defined above, “a” is independently 0 or 1, and Rf wherein p and q each are an integer from 1 to 150, the average of sum p+q is from 2 to 200, r is an integer from 0 to 6 and t is 2 or 3, wherein u is an integer from 1 to 200, v is an integer from 1 to 50 and t is as defined above; (B) a fluorinated organohydrogensiloxane having at least two silicon-bonded hydrogen atoms (i.e., SiH groups) per molecule, in an amount to provide 0.5 to 3.0 moles of SiH groups per mole of alkenyl groups on component (A); (C) a platinum group metal-based catalyst in an amount to provide 0.1 to 500 ppm of platinum group metal; (D) 0.1 to 10 parts by weight of an organosiloxane having per molecule at least one silicon-bonded hydrogen atom and at least one group selected from the group consisting of epoxy groups and trialkoxysilyl groups which is bonded to a silicon atom through a carbon atom or through carbon and oxygen atoms; and (E) 0.1 to 3 parts by weight of a compound of formula (6) having at least two allyloxycarbonyl (CH wherein A is a di- to tetra-valent group selected from the group of structures consisting of and x is equal to the valence of group A; and (F) 0.01 to 5 parts by weight of an organosilicon compound having at least one epoxy group and at least one silicon-bonded alkoxy group per molecule.