Urea-containing silanes, process for preparation thereof and use thereof

摘要

The invention relates to urea-containing silanes of the formula I;
which are prepared by reacting urea-containing disulphide silanes of the formula II
;
with sulphur or

in a first step, reacting an aminosilane of the formula III
;
with an isocyanate of the formula IV
;
and, in a second step, reacting the product from the first process step with sodium polysulphide of the formula (V)
Na2Sx  (V)
or

in a first step, reacting an isocyanatosilane of the formula VII
;
with an amine of the formula VIII
;
and, in a second step, reacting the product from the first process step with sodium polysulphide of the formula (V)
Na2Sx  (V).

主权项

1. A urea-containing silane of formula I where each R1 is independently selected from the group consisting of a C1-C10 alkoxy group, a C1-C10 alkyl group and each R is a branched or unbranched, saturated, aliphatic, divalent C1-C7 hydrocarbyl group and x is an integer of 4.