Rheology control agents

Details Rheology control agents Rheology control agents

2010-04-13

2011-10-04

Sullivan, Peter O (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C560S159000

Reexamination Certificate

active

08030513

ABSTRACT:
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 R3may 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 R2represents linear or branched alkylenes, ethers, polyethers, or polyester linkages and at least one of R1, R2, and R3comprises an ester group or an amide group which is branched off from the main chain; excluded from Formula (1) is a compound wherein R2is CH2—CH2—CH2—CH2—CH(C(O)OCH3), A, B, C, and D are equal to NH and R1and R3are 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.

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