Patent ID: 6268521
Filing Date: 2001-07-31
Classification: C08G,C12P

Abstract:
A process for preparing a modified polyoxyalkylene compound, said process comprising reacting at least one compound selected from the group consisting of acrylic acid, methacrylic acid, acrylic esters and methacrylic esters with a polyoxyalkylene in the presence of an enzyme which catalyzes the reaction, said polyoxyalkylene having the formula I ##STR5##whereR.sup.1 is hydrogen, an e-valent, linear or branched, cyclic, unsaturated and/or aromatic hydrocarbon radical, an unsubstituted or substituted aromatic, a carbohydrate or a carbohydrate derivative;each R.sup.2 is the same or different alkyl radicals or alkylene radicals having 1 to 24 carbon atoms or unsubstituted or substituted phenyl radicals having up to 24 carbon atoms;R.sup.3 is a hydrogen radical or a monovalent organic radical,a is 0 to 3;b is 0 to 100;c is 2 to 1.2;d is 0 to 100;e is 1 to 30;the sum (b+d)=4 to 200; and wherein at least one OH group is present per molecule and the sequence of the polyoxyalkylene segments (C.sub.2 H.sub.4-a R.sup.2.sub.a O).sub.b and (C.sub.c H.sub.2c O).sub.d is random.