Patent ID: 7771709

Claim:
An alternating copolymer comprising 2 to 100 repeating units (AB), wherein (A) is an α,ω-organohydrogensiloxane residue (A) and (B) a glycerol derivative residue having 1 to 11 hydroxyl groups, each repeating unit (AB) being represented by the following formula (1): wherein each R 1 may be the same or different and each R 1 is a group having 1 to 10 carbon atoms selected from the group consisting of alkyl, aryl, aralkyl, amino-substituted alkyl, and carboxyl-substituted alkyl groups, optionally substituted with halogen atoms, each R 2 may be the same or different and each R 2 is an alkyl group having 11 to 30 carbon atoms, optionally substituted with halogen atoms, Q is a divalent organic group having 3 to 20 carbon atoms and may comprise an ether bond and/or an ester bond, G is a mono- or poly-glycerol residue, a is an integer of from 2 to 100, and b is an integer of from 0 to 100.