Patent ID: 7014975

Claim:
A process for preparing a solid surface-modified with groups of the general formula I SiR 1 2 —R—NH 2 (I), wherein a solid having OH groups on a surface is reacted with a cyclic silazane of the formula II where R denotes a divalent, optionally cyano- or halogen-substituted C 3 -C 15 hydrocarbon radical which is bonded via N—C and C—Si bonds and in which one or more nonadjacent methylene units may be replaced by —O—, —CO—, —COO—, —OCO—, —OCOO—, —S—, or —NR x — and in which one or more nonadjacent methine units may be replaced by —N═, —N═N—, or —P═, there being at least 3 and not more than 6 atoms between the silicon atom and the nitrogen atom in the ring, R x denotes hydrogen or a C 1 -C 10 hydrocarbon radical which is optionally substituted by —CN or halogen, and R 1 denotes a hydrogen atom or a monovalent C 1 -C 20 hydrocarbon radical or C 1 -C 15 hydrocarbonoxy radical which is optionally substituted by —CN, —NCO, —NR x 2 , —COOH, —COOR x , -halogen, -acryloyl, -epoxy, —SH, —OH or —CONR x 2 and bonded via an Si—C bond, in each of which one or more nonadjacent methylene units may be replaced by —O—, —CO—, —COO—, —OCO—, —OCOO—, —S—, or —NR x — and in which one or more nonadjacent methine units may be replaced by —N═, —N═N—, or —P═.