Patent ID: 6630541
Filing Date: 2003-10-07
Classification: C08L,C09D

Abstract:
A thixotropic agent comprising the reaction product of an alkyd resin and a poly(ester)amide obtained by reacting a polycarboxylic acid with a compound of the formula Xmâ€”Râ€”Yn, wherein R stands for an organic group having at least 2 carbon atoms, X and Y may be the same or different and stand for a primary or secondary amino group or a hydroxyl group and m and n are each at least equal to 1, wherein at least 50 mole % of the polycarboxylic acid Is a dimeric fatty acid having at least 36 carbon atoms, wherein at least 25 mole % of the compound of the formula Xmâ€”Râ€”Yn, R stands for an aromatic group having 6 to 18 carbon atoms and X and Y may be the same or different and stand for a primary or secondary amino group, and wherein at most 75 mole % of the compound R stands for an aliphatic group having 2 to 54 carbon atoms, an araliphatic group having 7 to 18 carbon atoms and/or a cycloaliphatic group having 6 to 18 carbon atoms.