The invention relates to urea-containing silanes of the formula I
which are prepared by, in a first step, reacting an aminosilane of the formula II
with an isocyanate of the formula III
and, in a second step, reacting the product from the first process step with sodium sulphide of the formula IV
Na2S (IV)
or in a first step, reacting an isocyanatosilane of the formula VI
with an amine of the formula VII
and, in a second step, reacting the product from the first process step with sodium sulphide of the formula IV
Na2S (IV).
本发明涉及一种式I的含
尿素硅烷,其通过以下步骤制备:第一步,将式II的
氨基
硅烷与式III的
异氰酸酯反应,第二步,将第一步反应产物与式IV的
硫化
钠反应,其中IV为
Na2S;或者在第一步,将式VI的
异氰酸酯硅烷与式VII的胺反应,第二步,将第一步反应产物与式IV的
硫化
钠反应,其中IV为 。