Patent ID: 7919650

Claim:
An organofunctional silane composition comprising at least one organofunctional silane having a chemical structure: [[[(ROC(═O)) p -(G 1 ) j ] k - Y—S] r - G 2 -(SiX u Z b v Z c w ) s ] m [(HS) r -G 2 -(SiX u Z b v Z c w ) s ] n wherein: each occurrence of Y is independently selected from the group consisting of —C(═NR)—; —SC(═NR)—; —SC(═O)—; (—NR)C(═O)—; (—NR)C(═S)—; —OC(═O)—; —OC(═S)—; —C(═O)—; —SC(═S)—; —C(═S)—; —S(═O)—; —S(═O) 2 —; —OS(═O) 2 —; (—NR)S(═O) 2 —; —SS(═O)—; —OS(═O)—; (—NR)S(═O)—and —SS(═O) 2 —; each occurrence of R is independently selected from the group consisting of hydrogen, straight, cyclic or branched alkyl that may or may not contain unsaturation, alkenyl groups, aryl groups, and aralkyl groups, wherein each R, other than hydrogen, contains from 1 to 18 carbon atoms; each occurrence of G 1 is independently selected from the group consisting of hydrogen, monovalent alkyl, alkenyl, aryl, and aralkyl groups and polyvalent alkylene, alkenylene, arylene and aralkylene groups, wherein each G 1 , other than hydrogen, contains from 1 to 30 carbon atoms; each occurrence of G 2 is independently selected from the group consisting of divalent and polyvalent alkylene, alkenylene, arylene, and aralkylene groups, wherein each G 2 contains from 1 to 30 carbon atoms; each occurrence of X is independently selected from the group consisting of —Cl, —Br, RO—, RC(═O)O—, R 2 C═NO—, R 2 NO—, R 2 N—, —R, HO(R 0 CR 0 ) f O—, wherein each R is as above and each occurrence of R 0 is independently given by one of the members listed above for R; each occurrence of Z b , which forms a bridging structure between two silicon atoms, is independently given by [—O(R 0 CR 0 ) f O—] 0.5 , wherein each occurrence of R 0 is independently given by one of the members listed above for R; each occurrence of Z c , which forms a cyclic structure with a silicon atom, is independently given by —O(R 0 CR 0 ) f O— wherein each occurrence of R 0 is independently given by one of the members listed above for R; each occurrence of the subscripts f j, k, m, n, p, r, s, u, v and w is independently given by f is 2 to 15; j is 0 to 1, but j may be 0 only if p is 1; k is 1; m is 1 to 20; n is 1 to 20; p is 0 to 5; r is 1 to 3; s is 1 to 3; u is 0 to 2; v is 1 to 3; w is 0 to 1 with the provisos that u+v+2w=3; the structure above contains at least one hydrolysable group, Z b , bound to a silicon atom of the repeat unit [[[(ROC(═O)) p —(G 1 ) j ] k —Y—S] r —G 2 —(SiX u Z b v Z c w ) s ] and at least one hydrolysable group, Z b , bound to a silicon atom of the repeat unit [(HS) r —G 2 —(SiX u Z b v Z c w ) s ], wherein the two Z b groups are combined together to form a bridging group that chemically bonds the silicon atoms of the two different repeat units together; and the structure above contains at least one hydrolysable group, Z c , that is a difunctional alkoxy group.