Patent ID: 6552157
Filing Date: 2003-04-22
Classification: C08G,C09D,Y10T

Abstract:
A polyurethane containing secondary amide groups in the backbone of the polyurethane, wherein the polyurethane contains an average of 2 to 6 secondary amide groups and wherein the secondary amide groups (calculated as NHâ€”COâ€”, MW 43) are present in an amount of 1 to 14% by weight, based on the weight of the polyurethane, and correspond to the formulaâ€”X1â€”R1â€”NHâ€”C(O)â€”R2â€”X2â€”â€ƒâ€ƒ(I) whereinX1, and X2 are the same or different and represent the groups obtained by removing a hydrogen atom from a hydroxy group or a primary or secondary amino group and R1 and R2 are the same or different and represent linear or branched hydrocarbon groups that are optionally substituted by groups that do not contain isocyanate-reactive hydrogen atoms.