Patent ID: 6303678
Filing Date: 2001-10-16
Classification: C08G,C08K,C08L

Abstract:
An RTV-1-alkoxy composition which comprises at least one tin catalyst which comprises a reaction product of a silane or silane oligomer containing at least two hydrolyzable, monovalent, silicon-bonded oxyhydrocarbon radicals optionally substituted by one or more alkoxy groups, with a diorganotin diacylate, wherein valencies of tin are satisfied by oxygen atoms or carbon atoms, and the tin and oxygen linkages comprise Sn--O--Si and Sn--O--C linkages; and at least one surfactant (S) which contains divalent polyether units of the general formula (I)--O--[(CR.sup.60 R.sup..beta.).sub.u --O].sub.v-- (I)in whichR.sup..alpha. and R.sup..beta. are independently hydrogen or a monovalent C.sub.1 -C.sub.10 -hydrocarbon radical optionally substituted by hydroxyl, fluorine, chlorine, bromine, C.sub.1 -C.sub.10 -alkoxyalkyl or cyano groups,u is from 1 to 6 andv is from 3 to 100, the RTV-1-alkoxy composition being free of acid phosphoric acid esters of the general formula (II)(HO).sub.a OP(--O--[(CR.sup.1.sub.2).sub.b --O].sub.c [(CR.sup.2.sub.2).sub.d ].sub.e --L--M).sub.(3-a) (II)in whicha is 1 or 2,R.sup.1 and R.sup.2 are independently hydrogen, methyl, or hydroxyl radicals,b and d are 2 or 3,c is from 2 to 15,e is 0 or 1,L is a radical from the group consisting of --O-- --COO--, --OOC--, --CONR.sup.3 --, --NR.sup.4 CO-- and --CO--,R.sup.3 and R.sup.4 are independently hydrogen or a C.sub.1 -C.sub.10 -alkyl radical andM is a monovalent C.sub.1 - to C.sub.20 -hydrocarbon radical optionally substituted by hydroxyl, fluorine, chlorine, bromine, C.sub.1 -C.sub.10 -alkoxyalkyl or cyano groups,with the proviso that the radicals R.sup.1 and R.sup.2 on a given carbon atom cannot both be a hydroxyl radical.