KONDENSATIONSHÄRTBARE ZUSAMMENSETZUNGEN MIT VERBESSERTER SELBSTANHAFTUNG AN SUBSTRATE

A condensation curable silyl functional hydrocarbon polymer composition with improved adhesion to substrates. The composition comprises: (A) 100 parts by weight of an organic hydrocarbon polymer having a number average molecular weight of about 500 to about 300,000, and on average at least 1 hydrolyzable silyl group per molecule; (B) 0.1 to 100 parts by weight per 100 parts by weight of (A) of an alkoxy-silyl substituted organic adhesion promoter of an number average molecular weight in the range of 500 to 5,000, selected from the group consisting of di- or trialkoxy-silyl substituted polybutadiene, polyisoprene, polyisobutylene, copolymers of isobutylene and isoprene, copolymers of isoprene and butadiene, copolymers of isoprene and styrene, copolymers of butadiene and styrene and polyolefin polymers prepared by hydrogenating polyisoprene, polybutadiene or a copolymer of isoprene and styrene, a copolymer of butadiene and styrene or a copolymer of isoprene, butadiene and styrene, with the proviso that component (B) is different from component (A); and (C) 0.01 to 10 parts by weight per 100 parts by weight of (A) of a condensation cure catalyst; optional ingredients include (D) non reinforcing fillers and/or low-reinforcing fillers; (E) reinforcing filler and (F) water or a moisture-containing component. Applications include use as sealants for insulating glazing.