Patent ID: 7998585

Claim:
A dilutable, non-aqueous concentrate comprising a mixture of: (a) at least one fluorinated oligomeric silane of the formula: A-M n f M m h M r a -G wherein A is hydrogen or a residue of an initiating species; M f represents units derived from one or more fluorinated monomers; M h represents units derived from one or more non-fluorinated monomers; M a represents units derived from one or more non-fluorinated monomers having a silyl group, SiY 3 where Y is a hydrolyzable group selected from the group consisting of —Cl, —OCH 3 , and —OC 2 H 5 ; and G is a residue of a chain transfer agent of the formula —S-Q-Si—Y 3 in which Y is a hydrolyzable group selected from the group consisting of —Cl, —OCH 3 , and —OC 2 H 5 , and Q is an organic divalent linking group; n is an integer from 1 to 100; m is an integer from 0 to 100; and r is an integer from 0 to 100; and (b) at least one fluorocarbon surfactant.