Patent ID: 7576229

Claim:
Surface-modified particles comprising particles having a surface, and having radicals of the formula (II) [O 1/2 SiR 3 2 —CR 4 2 —O—(CR 4 2 ) b —OH] (II) bonded to the surface, where R 3 and R 4 are identical or different and are a hydrogen radical or a monovalent C 1-20 hydrocarbon radical or C 1-15 hydrocarbonoxy radical which is unsubstituted, or is substituted by —CN, —NCO, —NR x 2 , —COOH, —COOR x , —PO(OR x ) 2 , -halogen, -acryloyl, -epoxy, —SH, —OH or CONR x 2 groups, wherein in the C 1-20 hydrocarbon radical and C 1-15 hydrocarbonoxy radical, one or more nonadjacent methylene units are optionally replaced by one or more groups —O—, —CO—, —COO—, —OCO—, —OCOO—, —S—, or —NR x —, and in which one or more nonadjacent methine units are optionally replaced by groups —N═, —N═—, or —P═, R x is a hydrogen radical or an unsubstituted or —CN— or halogen-substituted C 1 -C 10 hydrocarbon radical, and wherein b is an integral value of at least 1.