Patent ID: 6225435
Filing Date: 2001-05-01
Classification: C08G,C08L,Y10S

Abstract:
A viscosity-stable solution, at 30-40% by weight of solids content, of polyurethaneurea in an inert organic solvent and in the substantial absence of a viscosity stabilizer, wherein the polyurethaneurea consists essentially of the reaction product of:a polymeric glycol selected from the group consisting of poly(tetramethyleneether)glycol and poly(tetra-methyleneether-co-3-methyltetramethyleneether)glycol;a diisocyanate selected from the group consisting of bis(4-isocyanatocyclohexyl)methane and 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane, present at a capping ratio in the range of about 1.5 to 3.0; andethylenediamine.