Patent ID: 7371858

Claim:
A compound of the formula wherein, provided that at least one of R 1 , R 2 , and R 3 is not a hydrogen atom, R 1 , R 2 , and R 3 each, independently of the other, is (i) a hydrogen atom, (ii) an alkyl group, (iii) an aryl group, (iv) an arylalkyl group, or (v) an alkylaryl group, and wherein R 1 and R 2 can also be (vi) an alkoxy group, (vii) an aryloxy group, (viii) an arylalkyloxy group, (ix) an alkylaryloxy group, (x) a polyalkyleneoxy group, (xi) a polyaryleneoxy group, (xii) a polyarylalkyleneoxy group, (xiii) a polyalkylaryleneoxy group, (xiv) a silyl group, (xv) a siloxane group, (xvi) a polysilylene group, (xvii) a polysiloxane group, or (xviii) a group of the formula wherein r is an integer representing a number of repeat —CH 2 — groups, wherein s is an integer representing a number of repeating —CH 2 — groups, and wherein X is (a) a direct bond, (b) an oxygen atom, (c) a sulfur atom, (d) a group of the formula —NR 40 — wherein R 40 is a hydrogen atom, an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group, or (e) a group of the formula —CR 50 R 60 — wherein R 50 and R 60 each, independently of the other, is a hydrogen atom, an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group, and R 10 and R 11 each, independently of the other, is (i) an alkylene group, (ii) an arylene group, (iii) an arylalkylene group, or (iv) an alkylarylene group, and wherein R 10 can also be (v) a polyalkyleneoxy group, (vi) a polyaryleneoxy group, (vii) a polyarylalkyleneoxy group, (viii) a polyalkylaryleneoxy group, (ix) a silylene group, (x) a siloxane group, (xi) a polysilylene group, or (xii) a polysiloxane group.