Patent ID: 7576151

Claim:
A coating composition comprising: i) a binder, and ii) a rheology modification agent obtained by reacting one or more polyisocyanates with one or more optically active amino acid esters of the general formula (I) not as racemic mixture; wherein each of R 1 and R 2 is independently selected from the group consisting of hydrogen and a hydrocarbyl group, wherein the hydrocarbyl group is linear or cyclic or branched, substituted or unsubstituted, saturated or unsaturated, and optionally containing a heteroatom, with each of R 1 and R 2 being different such that the carbon atom C* is a chiral centre; and wherein R 3 is a hydrocarbyl group, wherein the hydrocarbyl group is linear or cyclic or branched, substituted or unsubstituted, saturated or unsaturated, and optionally containing a heteroatom.