Patent ID: 6294620
Filing Date: 2001-09-25
Classification: C08L,C09D,C09J,C09K

Abstract:
A two-part sealant, adhesive or coating system comprising a first adhesion promoting primer part and a second curable resin part, the two parts adapted to be sequentially applied to a substrate to effect a seal, adhesive bond or coating, wherein the primer is an aqueous emulsion of at least one adhesion-promoting water insoluble or slightly soluble organosilane of the formula:R.sup.1.sub.a R.sup.2.sub.b Si(OR.sup.3).sub.4-a-bwhereR.sup.1 is a hydrocarbon group having from three to thirty carbon atoms which is substituted with an organic functional group, or R.sup.1 is a two to thirty carbon alkenyl group;R.sup.2 is alkyl, alkoxy-substituted alkyl, aryl or aralkyl, and has from one to twelve carbon atoms;R.sup.3 is alkyl or alkoxy-substituted alkyl, aryl or aralkyl group, and has from two to ten carbon atoms; anda is one to three, b is zero to two, and a+b is 1,2 or 3, which organosilane is soluble at between 0 and 8.0 weight percent in water at