Patent ID: 7592474

Claim:
An epoxy-functional silane of the general formula I: [(Z m R n Si—R 1 o —) p R 2 q —Y—C(X)—Y—] r G[—Y—(X)C—Y—R 3 ] s (I), in which the indices stand for zero or whole numbers, m + n = 3 ; m = 1 , 2 , or ⁢ ⁢ 3 ; n = 0 , 1 , or ⁢ ⁢ 2 ; o = 0 , or ⁢ ⁢ 1 , and ⁢ ⁢ q = 1 ⁢ ⁢ if ⁢ ⁢ o = 0 ; p = 1 , 2 , 3 , or ⁢ ⁢ 4 ; q = 0 ⁢ ⁢ or ⁢ ⁢ 1 , and ⁢ ⁢ p = 1 ⁢ ⁢ if ⁢ ⁢ q = 0 ; r , s = 1 , 2 , or ⁢ ⁢ 3 ; and the variables are defined as follows: Z is at least one of hydrolyzable atoms, a hydroxyl group hydrolyzable monovalent, substituted groups and hydrolysable monovlaent unsubstituted groups; R is a substituted or unsubstituted, nonhydrolyzable monovalent organic group containing no epoxide group; R 1 is a substituted or unsubstituted, linking, divalent organic group; R 2 is a substituted or unsubstituted, linking, (p+1)-valent organic group; R 3 is a substituted or unsubstituted, nonhydrolyzable, monovalent organic group containing at least one epoxide group; X is identical or different at each occurrence and is an oxygen atom or sulfur atom; G is a substituted or unsubstituted, (r+s)-valent organic group; Y is identical or different at each occurrence and is an oxygen atom, sulfur atom or imino group >NR 4 where R 4 is identical or different at each occurrence and is selected from the group consisting of a hydrogen atom, a group of the general formula II: [(Z m R n Si—R 1 o —) p R 2 q — (II) a group of the general formula III: R 3 — (III), a group of the general formula IV: (Z m R n Si—R 1 o —) p R 2 q —NH—C(X)— (IV) and a group of the general formula V: R 3 —NH—C(X)— (V); in which the indices and variables are as defined above.