Patent ID: 6716373
Filing Date: 2004-04-06
Classification: C08G

Abstract:
An optically active polysilane represented by the following general formula: wherein R1 and R2 are a combination of groups selected from (R)-3,7-dimethyloctyl group and (S)-3-methylpentyl group, (S)-3,7-dimethyloctyl group and (R)-3-methylpentyl group, (S)-3,7-dimethyloctyl group and isopentyl group, (R)-3,7-dimethyloctyl group and isopentyl group, (S)-3,7-dimethyloctyl group and 2-ethylbutyl group, (R)-3,7-dimethyloctyl group and 2-ethylbutyl group, (S)-3,7-dimethyloctyl group and 2-cyclopentylethyl group, and (R)-3,7-dimethyloctyl group and 2-cyclopentylethyl group; R3 is an alkyl group having 3 to 20 carbon atoms and formed of a branched structure which is branched at any one of the first to fourth carbon atoms positioned away from the backbone chain; R4 is a straight-chain alkyl ether group having 2 to 22 carbon atoms, or a straight-chain alkyl group having 2 to 22 carbon atoms; x is a number ranging from 0.01 to 0.99; and wherein the number or repeating units in the optically active polysilane as represents by formula (1) ranges from 10 to 100,000.