A bis-and tris-trialkoxysilylalkylamines

Abstract

Abstract Novel cross-linking agents are disclosed which can be combined with plastically shapable organopolysiloxanes; the resulting novel mixtures or compositions being storage stable under exclusion of all moisture. The cross-linking reaction takes place on exposure of the compositions to water, atmospheric humidity sufficing, at temperatures below 50* C. The compositions are especially adapted to be used for the filling of joints and as sealing materials in the building industry. The elastomers resulting therefrom have an increased adhesion to the substrate saving the expenditure of priming, and are transparent. The novel compositions comprise: A. an Alpha , omega -dihydroxy-poly-(diorgano-siloxane) which, in addition to its diorganosiloxane units, may contain up to 10 mol-percent of siloxane units having the formula CH3SiO3/2, and may be admixed with fillers and an Alpha , omega -bis(trimethyl-siloxy)-poly-(diorgano-siloxane); and B. a cross-linking agent having the formula ((RO-)3Si-CH(R''))nNQ3 n IN WHICH N IS 2 OR 3, R is an alkyl radical with 1 to 4 carbon atoms, R'' is a hydrogen atom, an alkyl radical with 1 to 6 carbon atoms, a cyclohexyl radical a phenyl radical, and Q is an alkyl or alkenyl radical with 2 to 4 carbon atoms, an aralkyl radical with 7 to 10 carbon atoms, a dimethylaminoalkyl radical with 2 to 4 carbon atoms in its alkylene group, or a methoxy- or ethoxyethyl or -propyl radical.

Inventors

• 👤 Hans Dietrich Golitz
• 👤 Walter Simmler
• 👤 Peter Schwabe

Bibliographic Details