Patent ID: 7928258

Claim:
A cyclic and bridging dialkoxy silane composition comprising at least one component having a chemical structure selected from the group consisting of: wherein: each occurrence of the —SiX u Z b y Z c w group is independently selected from the group consisting of —SiXZ c , —SiZ b Z c , —SiX 2 Z b , —SiXZ b 2 and —SiZ b 3 each occurrence of R is independently selected from the group consisting of hydrogen, straight, cyclic or branched alkyl, alkenyl groups, aryl groups, and aralkyl groups, with each R, other than hydrogen, containing from 1 to 18 carbon atoms; each occurrence of G is independently selected from the group consisting of hydrogen, monovalent alkyl, alkenyl, aryl or aralkyl group containing from 1 to 30 carbon atoms, and polyvalent group containing from 1 to 30 carbon atoms derived by substitution of alkyl, alkenyl, aryl or aralkyl group; each occurrence of Z b , which forms a bridging structure between two different silicon atoms, is independently selected from the group consisting of (—O—) 0.5 and [—O(R 4 CR 5 ) f O—] 0.5 , wherein each occurrence of R 4 and R 5 is independently R; each occurrence of Z c , which forms a cyclic structure with a single silicon atom, is independently given by —O(R 4 CR 5 ) f O— wherein each occurrence of R 4 and R 5 is independently R; each occurrence of X is independently selected from the group consisting of —CI, —Br, R 1 O—, R 1 O(R 4 CR 5 ) f O—, R 1 C(═O)O—, R 1 R 2 C═NO—, R 1 R 2 NO—, R 1 R 2 N—, —R 1 , and —(OSi R 1 R 2 ) t (OSi R 1 R 2 R 3 ), wherein each occurrence of R 1 , R 2 and R 3 is independently R; each occurrence of the subscripts, u, n, v, w, f, p, r, q, j, p, t, and s, is independently given by u is 0 to 3; n is 1 to 100, with the proviso that when n is greater than 1, v is greater than 0 and all the valences for Z b have a silicon atom bonded to them; v is 0 to 3; w is 0 to 1 with the proviso that u+v+2w is 3; f is 1 to 15; p is 0 to 5; r is 1 to 3; q is 0 to 6; j is 0 to 1, with the proviso that when j is 0, p is 1; t is 0 to 50; and s is 1 to 3; and wherein that each of the above structures comprise at least two hydrolysable bridging dialkoxy group, Z b , or at least one hydrolysable cyclic dialkoxy group, Z c .