Rheology control agents

摘要

The present invention provides for a rheology control agent that includes a following compound represented by the following formula: wherein A, B, C and D equal CH₂, CHR, NH, or O, and A, B, C and D may be the same or different and at least one of A and B equals NH and at least one of C and D equals NH; and wherein R₁, R₂, and R₃ may be the same or different and represent a linear, branched, hyper-branched, or dendritic ether, polyether or hydrocarbon based chain, optionally forming at least one carbon-based ring, being saturated or unsaturated and R₂ represents linear or branched alkylenes, ethers, polyethers, or polyester linkages and at least one of R₁, R₂, and R₃ comprises an ester group or an amide group which is branched off from the main chain; excluded from Formula (1) is a compound wherein R₂ is CH₂-CH₂-CH₂-CH₂-CH(C(O)OCH₃), A, B, C, and D are equal to NH and R₁ and R₃ are both equal to a linear octyl hydrocarbon chain; the rheology control agent is suitable for solvent-borne and water-borne coating composition having improved rheology control useful for OEM refinishing or repainting the exterior of automobile and truck bodies and parts thereof.