Patent ID: 6262188
Filing Date: 2001-07-17
Classification: C08G,C08L,C09J

Abstract:
An adhesion-promoting additive for a silicone adhesive polymer composition, comprising functionalized silicone resins having the formulaM.sub.x.sup.H M.sub.y.sup.R Q (I)wherein x+y is in the range from 0.5 to 4 and the ratio of x:y is in the range from 1:10 to 10:1;Q is SiO.sub.4/2M.sup.H is R.sup.1 R.sup.2 HSiO.sub.1/2M.sup.R is R.sup.1 R.sup.2 RSiO.sub.1/2wherein each R.sup.1 and R.sup.2 are independently selected from the group consisting of alkyl, fluoroalkyl, and aryl groups having from 1 to about 18 carbons, and each R is the same or different selected from the group consisting of the formulas (II), (III) and (IV)--CH.sub.2 BOC(O)Ar (II)wherein Ar is a phenyl or substituted phenyl group, B is a branched or straight chain alkylene group having from 1 to 12 carbon atoms;--CH.sub.2 CH.sub.2 Ep (III)wherein Ep is an organic radical containing an epoxy group selected from the following: ##STR4##wherein B is as defined above; and--A.sup.1 --C(O)O--A.sup.2 --Si(OR.sup.1).sub.3 (IV)wherein A.sup.1 a branched or straight-chain alkylene group having from 2 to 12 carbon atoms and A.sup.2 is a branched or straight-chaiin alkylene group having from 1 to 16 carbon atoms, and R.sup.1 is as defined above.