Patent ID: 8487062

Claim:
A polyimidesilicone having a primary alcoholic hydroxyl group, which polyimidesilicone is represented by the following general formula (1): wherein k and m are each a positive integer, in which k and m satisfy a relation of 0.01≦k/(k+m)<1; X is a tetravalent organic group represented by the following general formula (2): wherein R 1 's are each independently a monovalent hydrocarbon group having 1 to 8 carbon atoms, R 2' s are each independently a trivalent organic group, and n is a numeral of 1 to 120 on average; Y's are each a divalent organic group and at least a part thereof is represented by the following general formula (3): wherein A('s) is/are each a divalent organic group selected from: —CH 2 —, —O—, —SO 2 —, —CONH—, which may be the same as or different from each other, B('s) and C('s) are each an alkyl group having 1 to 4 carbon atoms or a hydrogen atom, and may be the same as or different from each other, a is 0 or 1, b is 0 or 1, c is an integer of 0 to 10, and R 3 ('s) is/are each a monovalent group selected from organic groups containing a phenolic hydroxyl group or an alcoholic hydroxyl group, in which at least one R 3 is an organic group containing a primary alcoholic hydroxyl group; and W is a tetravalent organic group other than X, wherein said polyimidesilicone has an OH value of 20 to 200 KOH mg/g.