Patent ID: 6268111
Filing Date: 2001-07-31
Classification: G03F

Abstract:
An oligomer having the formula:(CH.sub.2.dbd.C(H or CH.sub.3)--CO--X--R--CH(OZ)--CH.sub.2 --O--.phi.--).sub.2 --C(CH.sub.3).sub.2whereR is an alkylene group of from 1 to 40 carbons;X is nothing or a diol selected from the group consisting of alkylene diols, polyester diols and polyether diols of molecular weight between 50 and 2,000; andZ has the formula:--CO--NH--Y--NH--CO--O(--VW.sub.1-5 --O--CO--NH--Y--NH--CO--O).sub.n --Q--O--CO--C(H or CH.sub.3).dbd.CH.sub.2 ;wherethe Ys are alkylene or aromatic hydrocarbon groups;V is an alkylene, aromatic, alkylaryl, or arylalkyl hydrocarbon group, and the Ws are the same or different and are each an acidic group selected from the group consisting of COOH, SO.sub.2 H, and PO.sub.4 H(Hor C.sub.1-18 alkyl);n=1-4; andQ in an alkylene group of 2 to 6 carbon atoms.