Patent ID: 7816009

Claim:
Organosilyl-functionalized particles of the formula I, PR(O (u+t)/2 )[O u/2 (R 2 O) v−u R 1 3−v SiCR 3 2 —A] s (O 1/2 R 4 ) t (I) where PR is a particle radical comprising oxygen atoms and silicon atoms, selected from the group consisting of colloidal silica, organopolysiloxane resins, and mixtures thereof, A is a radical selected from the group consisting of R 5 O—, R 5 2 N—, (R 5 O) 2 OP—, R 5 2 NC(O)NR 5 —, R 6 OC(O)NR 5 —, and OCN—, R 1 and R 3 are each hydrogen or an optionally halogen-substituted hydrocarbon radical having 1-18 carbon atoms, R 2 is an alkyl radical having 1-6 carbon atoms or an ω-oxaalkyl-alkyl radical having in total 2-10 carbon atoms, R 4 is hydrogen or an optionally substituted monovalent hydrocarbon radical having 1-18 carbon atoms, R 5 is hydrogen or an optionally halogen-, OR 2 —, NR 2 2 — or epoxy-functional hydrocarbon radical having 1-18 carbon atoms, R 6 is an optionally halogen, OR 2 —, NR 2 2 — or epoxy-functional hydrocarbon radical having 1-18 carbon atoms, s has a value >0, t has a value of greater than or equal to 0, u has values 1, 2 or 3, v has values 1, 2 or 3, wherein the organosilyl-functionalized particles have an average diameter of from about 1 nm to 1000 nm, and are prepared by functionalizing particles PR with an organosilyl-functionalizing agent dissolved in organic solvent, the functionalizing agent comprising at least one organosilicon compound of the formula (II) (R 2 O) v R 1 3−v Si—CR 3 2 —A (II).