| abstract |
This curable fluoropolyether adhesive composition contains specific amounts of(A) a straight-chain polyfluoro compound having two or more alkenyl groups per molecule, and having a perfluoropolyether structure in the main chain thereof,(B) a fluorine-containing organohydrogen siloxane having, per molecule, a perfluoroalkyl group, a perfluoro oxyalkyl group, a perfluoro alkylene group, or perfluoro oxyalkylene group, and two or more SiH groups, and not having an epoxy group or an alkoxy group directly bonded to a silicon atom,(C) sodium fluoride,(D) a platinum-group metal catalyst, and(E) an organopolysiloxane having, per molecule, a SiH group, a perfluoroalkyl group or a perfluoro oxyalkyl group, and an epoxy group and/or a trialkoxysilyl group.A cured product of the composition has good light transmission properties and good adhesion properties, and excellent rubber strength. |