Patent ID: 6248844
Filing Date: 2001-06-19
Classification: B01L,C08G,G01N

Abstract:
A polyester comprising the repeating units A, B, C and moiety D wherein: A=(--C:O--R.sub.A --O:C--) wherein A is a residue of a polymeric fatty acid and R.sub.A is an aliphatic or aromatic moiety having from about 20 to about 50 carbon atoms;B=(--C:O R.sub.B --O:C--), whereinR.sub.B is a member selected from the group consisting of a divalent aliphatic chain of 1-34 carbon atoms; a divalent cycloaliphatic chain of 3-34 carbon atoms; a divalent arylene chain of from 6-34 carbon atoms, a divalent alkarylene chain of from 7-34 carbon atoms, a divalent alkarylalkylene chain of from 8-34 carbon atoms and mixtures thereof:C=(--O--R.sub.C --O--), whereinR.sub.C is a member selected from the group consisting of compounds of the formula;R.sub.C =(CH.sub.n R.sub.m).sub.k,wherein n=0, 1,2, or 3; R=H, C.sub.1 to C.sub.10 alkyl, CH.sub.2 OCH.sub.2 CH.sub.2, CH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.2 ; m=0, 1, or 2; n+m=2 ; k=1 to 10; andD is a residue of a compound having at least one polymerizable carbon--carbon double bond and at least one functional group capable of reacting with the ends of the polyester chain, and wherein the polyester has a kinematic viscosity of between about 100 to about 1000 centistokes at 100 EC.