C - Chemistry – Metallurgy – 09 – C
Patent
C - Chemistry, Metallurgy
09
C
C09C 3/00 (2006.01) C09C 3/08 (2006.01) C09C 3/10 (2006.01) C09D 17/00 (2006.01) C08G 63/685 (2006.01) C09B 67/46 (2006.01)
Patent
CA 2430985
The present invention is directed to a polyester carboxylate polymeric pigment dispersant to be used as a grind resin to incorporate inorganic pigment into a pigment dispersion for a coating composition. The polymeric pigment dispersant is the reaction product of pentaerythritol, hexahydrophthalic anhydride, glycidylneodecanoate, and dimethylethanolamine. The present invention is also directed to a method of preparing the polymeric pigment dispersant. In this method, the pentaerythritol and the hexahydrophthalic anhydride are polymerized to form an intermediate compound. Next, an epoxy group of the glycidylneodecanoate reacts with the intermediate compound, and then the dimethylethanolamine neutralizes the intermediate compound to form the completed polymeric pigment dispersant. The polymeric pigment dispersant is utilized for efficient wetting and grinding of the pigment.
L'invention concerne un agent dispersant polymère de pigment à base de carboxylate polyester utilisé en tant que résine de dispersion afin d'incorporer un pigment inorganique dans une dispersion pigmentaire destinée à une composition de revêtement. L'agent dispersant polymère de pigment est le produit de réaction de pentaérythritole, anhydride hexahydrophthalique, glycidylneodécanoate, et diméthylethanolamine. L'invention porte également sur un procédé de préparation de l'agent dispersant polymère de pigment. Selon ce procédé, le pentaérythritole et l'anhydride hexahydrophthalique sont polymérisés afin de former un composé intermédiaire. Ensuite, un groupe époxy de glycidylneodécanoate réagit avec le composé intermédiaire et, par la suite, le diméthyléthanolamine neutralise le composé intermédiaire afin de former l'agent dispersant polymère final de pigment. Ce dernier est utilisé pour le mouillage et la dispersion efficaces du pigment.
Lanza Joann
Ramesh Swaminathan
Basf Corporation
Robic
LandOfFree
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