Patent ID: 7563917

Claim:
A silicon compound represented by formula (1), being prepared from a silicon compound represented by formula (2), wherein: in formula (1), each of seven R 1 is independently selected from the group consisting of (a) hydrogen, (b) (ii) 2-methylpropyl, (iii) 2,4,4-trimethylpentyl, (iv) cyclopentyl, (v) cyclohexyl, (vi) trifluoropropyl, (vii) tridecafluoro-1,1,2,2,-tetrahydrooctyl and (viii) unsubstituted phenyl, (c) substituted or unsubstituted aryl and (d) substituted or unsubstituted arylalkyl wherein each hydrogen of the alkenylene may be optionally substituted with fluorine and each —CH 2 — group of said alkenylene may be optionally replaced with —O— or —CH═CH—; and A 2 is a hydroxyl-terminal organic group, and in formula (2), R 1 is the same as R 1 in formula (1) and A 1 is an organic compound having an acyloxy group.