Primer composition for urethane resins.

摘要

Primer compositions for adhering urethane resins to various substrates, including silicone rubber, comprise a solvent and either an organosilane of the formula (R<1>O)xR<2>3-xSiR<3>(XR<4>)yCOOH or a partial hydrolysis/condensation product of said organosilane, wherein R<1> represents an alkyl or alkoxyalkyl radical; R<2> represents a monovalent hydrocarbon radical; R<3> represents an alkylene radical; X is O, S, or NH; R<4> represents an alkylene radical; x is 3 or 2; and y is 0 or 1.