Patent ID: 6479581
Filing Date: 2002-11-12
Classification: C08G,C09D,D06M,Y10T

Abstract:
An aqueous solution comprisinga. a polyamide-amic acid having an acid number in the range of from about 120 mg KOH/g to the theoretical maximum value, said polyamide-amic acid comprising amide-amic acid units according to structural formula: â€ƒand amide-imide units according to the structural formula: wherein R is divalent arylene radical and wherein the mole ratio of said amide-amic acid units to said amide-imide units lies in a range of from about 18:1 to about 5:1; b. from about 5 to about 50 wt. % tertiary aliphatic amine; and c. an amount of water sufficient to provide a polyamide-amic acid content of from about 0.5 to about 15 wt. %, based on the combined weight of said tertiary aliphatic amine, said water and said polyamide-amic acid.