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US 4,963,636 AGranted
Adhesion promoters
AssigneeCiba-Geigy Corporation
InventorsRolf Mulhaupt, Hubert Simon
Life of this patent
Estimating the term…
Abstract
Compounds of formula (I) ##STR1## wherein one of the radicals R.sup.1 or R.sup.2 is --N.dbd.C.dbd.O and the other is --NHC(O)S(CH.sub.2).sub.3 Si(OR.sup.3).sub.3, wherein R.sup.3 is C.sub.1 -C.sub.4 alkyl or phenyl, are most suitable for use as adhesion promoters for polyurethane single-component or two-component adhesives and also as primers.
Claims1
A two component adhesive consisting essentially of
- (I) a polyfunctional isocyanate compound or an isocyanate terminated polyurethane prepolymer and a compound of formula I ##STR4## wherein one of the radicals R.sup.1 or R.sup.2 is --N.dbd.C.dbd.O and the other is --NHC(O)S(CH.sub.2).sub.3 Si(OR.sup.3).sub.3, wherein R.sup.3 is C.sub.1 -C.sub.4 alkyl or phenyl and
- (II) as a curing agent, a polyol with the proviso that the ratio of NCO groups to OH groups is less than or equal to 1.02.
Dependencies are inferred from the claim text.