Patent ID: 6867317

Claim:
A complex conforming to the following structure; wherein; Me is methyl; R and R′ are CH 3 or —(CH 2 ) 3 —(EO) a —(PO) b —(EO) c —C(O)—R″—C(O)—O − with the proviso that both & and R′ are not CH 3 ; x is an integer ranging from 1 to 100; y is an integer ranging from 1 to 100; R″ is selected from thc group consisting of —CH 2 —CH 2 —; —CH—CH—; —CH 2 —C(R 7 )—H; R 1 is selected from the group consisting of lower alkyl CH 3 (CH) n — and phenyl; n is an integer from 0 to 8; a, b and c arc integers independently ranging from 0 to 20; EO is an ethylene oxide residue —(CH 2 CH 2 —O)—; PO is a propylene oxide residue —(CH 2 CH(CH 3 )—O)—; o is an integer ranging from 1 to 100; q is an integer ranging from 0 to 500, R 7 is alkyl having from 1 to 20 carbon atoms.