Compositions of silylated polymer and aminosilane adhesion promoters

A composition prepared by mixing a silylated polymer and an adhesion promoter, the silylated polymer being selected from the group consisting of silylated acrylics, silylated polyurethanes, silylated polyethers, silylated polyesters, silylated polyolefins and mixtures thereof and having at least two groups thereon selected from alkoxysilyl, aryloxysilyl, alkyloximinosilyl and silanol groups and the adhesion promoter being a silane adhesion promoter of the formula:

• wherein:
• R1 is a branched or cyclic alkylene group, an arylene group or an alkarylene group, any of which may be optionally interrupted by one or more ether oxygen atoms or a (poly)sulfide bridge, provided that R1 has at least 4 carbon atoms;
• R2 is an alkyl, aryl or alkaryl radical having 1 to 6 carbons;
• R3 is a C1 to C6 alkoxy group or a C3 to C5 ketoximato group;
• R4 is hydrogen, a hydrocarbon group, which may optionally be substituted, or a group which will thermally deblock to form an amine group containing the nitrogen atom to which it is attached;
• and z is 0 or 1.