Thixotropic binder systems for thixotropic coating compositions

Details Thixotropic binder systems for thixotropic coating compositions Thixotropic binder systems for thixotropic coating compositions

C - Chemistry, Metallurgy

08

G

402/143, 400/743

C08G 18/12 (2006.01) C08G 18/28 (2006.01) C08G 18/32 (2006.01) C08L 75/02 (2006.01) C09D 175/02 (2006.01)

Patent

CA 2028318

ABSTRACT PV 35478 "THIXOTROPIC BINDER SYSTEM FOR THIXOTROPIC COATING COMPOSITIONS" A film-forming thixotropic binder system for imparting sag resistance to coating compositions comprising the product obtained by reacting an isocyanate preferably having a molecular weight of at least 400 and comprising more than two isocyanate groups (preferably an isocyanurate trimer obtained from di-isocyanates) with a polyamine and optionally a monoamine in the presence of a film-forming carboxylic acid copolymer having an acid value of at least 25 mg KOH/g copolymer. The binder composition may be neutralised by alkali to produce a salt soluble in an aqueous coating composition. Also detailed processes for making the binder system.

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