Patent ID: 7872053

Claim:
A compound of the formula (I): R 1 —SiR 2 —X—SiR 2 —[O—SiR 2 ] m —R 2 I) wherein R is selected from the group consisting of C 1 -C 22 alkyl, substituted C 1 -C 22 alkyl; C 6 -C 10 aryl, and substituted C 6 -C 10 aryl, wherein R 1 and R 2 are independently selected from the group consisting of organic groups bound via a carbon atom to the silicon atoms, provided that at least one of R 1 and R 2 comprises a hydrophilic group, wherein X is a single bond or a divalent organic residue other than —CH 2 -CH 2 —, bound via a carbon atom to the silicon atoms, wherein m>0, and wherein one of R 1 and R 2 is a hydrophilic organic group and one of R 1 and R 2 is a non-hydrophilic organic group.