| abstract |
Surface-modified solids bearing groups of the formula I n SiR 1 2 —R—NH 2   (I), n are prepared by reacting a solid having OH groups on a surface thereof with a cyclic silazane of the general formula II n n n where n R is a divalent optionally substituted hydrocarbon radical optionally containing heteroatom containing groups, and n R 1 is a hydrogen atom, or a monovalent optionally substituted hydrocarbon or hydrocarbonoxy group optionally containing heteroatom-containing groups. The surface-modified solids are preferably metal oxide particles. Such surface-modified particles are useful in numerous products. |