Patent ID: 6331606
Filing Date: 2001-12-18
Classification: C08G

Abstract:
A composition comprising repeat units derived from 1,3-propanediol, an organic acid, a polyether diol, and a sulfonated comonomer having the formula of (R'O(O)C).sub.2 A(R).sub.z S(O).sub.2 OM wherein each R' is independently hydrogen, a C.sub.1 to C.sub.4 alkyl group, or a C.sub.1 to C.sub.4 hydroxyalkyl group; R is a C.sub.1 to C.sub.4 alkyl group; A is an alkylene group, an arylene group, or combinations thereof; z is a number from 0 to 2; M is hydrogen, alkali metal ion, alkaline earth metal ion, quaternary ammonium, an ammonium ion, or combinations of two or more thereof; and said polyether diol is present in said composition in the range of from about 10 to about 80 weight % and the molecular weight of said polyether diol is in the range of from about 200 to about 1500, and has the formula H--(--O--(CH.sub.2).sub.a --).sub.b --OH wherein a is 3 to 12 and b is 2 to 25.