Patent ID: 6107394
Filing Date: 2000-08-22
Classification: C08G,C08L

Abstract:
A blend useful as an aqueous thickener comprising a urethane compound effective as an associative thickener and at least one non-urethane compound of the formula:R.sup.1 --(O--A).sub.a --B.sup.1 --R.sup.2 --(B.sup.2 --R.sup.3).sub.d --(B.sup.3 --(A'--O).sub.b-f --(A'--B.sup.4).sub.f --R.sup.4 --(B.sup.5 --R.sup.5).sub.a).sub.n --B.sup.6 --(A""O).sub.c --R.sup.6wherein:R.sup.1 and R.sup.6 are monovalent hydrophobic groups independently selected from the group consisting of an aliphatic group, a substituted aliphatic group, an aromatic group, and a substituted aromatic group;R.sup.2 and R.sup.4 are independently selected from the group consisting of aliphatic, substituted aliphatic, aromatic, or substituted aromatic radicals, each radical being divalent or trivalent, and wherein each group contains at least 3 carbon atoms;R.sup.3 and R.sup.5 are independently selected from hydrogen, lower alkyl and lower aralkyl;B.sup.1, B.sup.3, and B.sup.6 and B.sup.2, B.sup.4 and B.sup.5 when present are linking groups independently selected from the group consisting of an oxygen atom, a carboxylate group, an amino group, and an amido group;each of a, b, c, d, e, f, and n are integers, wherein each of a and c are independently any integer from greater than 20 to about 200; b is any integer from greater than 20 to about 450; d, e, and f are zero or 1; and n is any integer from 1 to about 5; andeach of A, A', and A"" is independently an ethylene, 1,2-propylene, 1,2-butylene unit or combinations thereof.