MASSES WHICH MAY BE CROSS-LINKED TO GIVE ELASTOMERS WITH CLEAVAGE OF ALCOHOLS FROM ALKOXYSILYL END GROUPS

摘要

The invention relates to masses which may be cross-linked to give elastomers with cleavage of alcohols from alkoxysilyl end groups and containing tin catalysts. The catalysts are tin compounds with a co-ordination number of 5 or 6, in which the tin atom is co-ordinatively bonded to phosphorous compounds comprising P=O groups, by means of said P=O groups. The tin compound (Z) may be obtained by reaction with phosphorus compounds comprising P=O groups, selected from compounds of general formula (I) 0=PR<1>M (OR<2>)n (OH)3-m-n, or compounds of general formula (III) 0=PR7o(NR<8>2)p(OR<9>)3-0-p, with organic tin compounds selected from compounds of general formula (IV) to (VII), (IV)R<10>4-rSnXr, (V) R102SnY, (VI) R103SnY1/2 (VII) R<10>SnY3/2, in which R<1>, R<2>, R<7>, R<8>, R<9>, R<10>, X, Y, m, n, o, p, and r have the meanings given in claim 1.