Patent ID: 6022930
Filing Date: 2000-02-08
Classification: C08F

Abstract:
A process for producing polycondensable macromonomers having formula (I) ##STR4## ; wherein R=an alkyl group with 1-40 carbon atoms;R.sup.1 =hydrogen or methyl;R.sup.2 =alkylene units;X=bifunctional moiety;F=functional group;n=3-45; andm=.gtoreq.2which comprises reacting a carboxyl or hydroxyl terminated prepolymer, of formula (II) ##STR5## with an organic compound containing two or more isocyanate reactive functional groups, in the presence of a dehydrating agent and a non-reactive solvent at ambient temperature for a period ranging between 3 and 12 hours and separating the product from the reaction mixture.