Patent ID: 7074876

Claim:
A blocked mercaptosilane selected from the group consisting of: [[(ROC(â•O)) p -(G) j ] k â€”Yâ€”S] r -G-(SiX 3 ) 8 (1); and [(X 3 Si) q -G] a â€”[Yâ€²â€”[S-G-SiX 3 ] b ] c (2) wherein Y is a polyvalent species (Q) z A(â•E) selected from the group consisting of â€”C(â•NR)â€”; â€”SC(â•NR)â€”; â€”SC(â•O)â€”; â€”S(â•O)â€”; â€”S(â•O) 2 â€”; â€”OS(â•O) 2 â€”; (â€”NR)S(â•O) 2 â€”; â€”SS(â•O)â€”; â€”OS(â•O)â€”; (â€”NR)S(â•O)â€”; â€”SS(â•O) 2 â€”; â€”(â€”S)P(â•O)â€”; â€”P(â•O)(â€”) 2 ; â€”(â€”S)P(â•S)â€”; â€”P(â•O)(â€”) 2 ; (â€”NR) 2 P(â•O)â€”; (â€”O)(â€”NR)P(â•O)â€”; â€”(â€”O)P(â•O)â€”; â€”(â€”NR)P(â•O)â€”; (â€”NR) 2 P(â•S)â€”; (â€”NR)(â€”S)P(â•S)â€”; (â€”O)(â€”NR)P(â•S)â€”; â€”(â€”O)P(â•S)â€”; and â€”(â€”NR)P(â•S)â€”; Yâ€² is a polyvalent species (O) z A(â•E) selected from the group consisting of â€”C(â•NR)â€”; â€”SC(â•NR)â€”; â€”SC(â•O)â€”; â€”S(â•)â€”; â€”S(â•O) 2 â€”; â€”OS(â•O) 2 â€”; (â€”NR)S(â•O) 2 â€”; â€”SS(â•)â€”; â€”OS(â•O)â€”; (â€”NR)S(â•O)â€”; â€”SS(â•O) 2 â€”; wherein the atom A, attached to unsaturated heteroatom E is attached to the sulfur which in turn is linked via a group G to the silicon atom; each R is chosen independently from hydrogen, straight, cyclic, or branched alkyl that may or may not contain carbon-carbon double bond, an alkenyl groups, an aryl groups, and/or aralkl groups, with each R contains from 1 to 18 carbon atoms; each G is independently a monovalent or polyvalent group derived by substitution of alkyl, alkenyl, aryl, or aralkyl wherein G can contain from 1 to 18 carbon atom; wherein at least one G is polyvalent, and if G is monovalent, G can be a hydrogen atom; X is independently selected from the group consisting of â€”Cl, â€”Br, ROâ€”, RC(â•O)Oâ€”, R 2 Câ•NOâ€”, R 2 NOâ€”, R 2 Nâ€”, â€”R, and â€”(OSiR 2 )t(OSiR 3 ) wherein each R is as above and at least one X is not â€”R; p is 0 to 5; r is 1 to 3; z is 0 to 2; q is 0 to 6; a is 0 to 7; b is 1 to 3; j is 0 to 1, but it may be 0 only if p is 1; c is 1 to 6; t is 0 to 5; s is 1 to 3; k is 1 to 2; with the provisos that (I) if A is carbon, sulfur, or sulfonyl, then (i) a+b is 2 and (ii) k is 1; (II) if A is phosphorous, then a+b is 3 unless both (i) c is greater than 1 and (ii) b is 1, in which case a is c+1; and (III) if A is phosphorous, then k is 2 and G is a monovalent or polyvalent group derived by substitution of alkyl, alkenyl, aryl, or aralkyl wherein G contains from 1 to 18 carbon atoms.