Pigmented compositions

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 11/02 (2006.01) C09B 67/00 (2006.01) C09B 67/46 (2006.01) C09D 5/02 (2006.01) C09D 17/00 (2006.01)

Patent

CA 2370622

This invention relates to pigment compositions, e.g., pigmented ink and coating compositions, which comprise pigment particles and a polymer. The polymer can be obtained, for example, by the copolymerization of monomers including: (1) a vinyl halide, e.g., vinyl chloride; (2) a vinyl ester, e.g., vinyl acetate; and (3) a monomer having a sulfuric acid group or a derivative thereof, e.g., an acrylate or methacrylate moiety having a sulfonic acid group or a metal or amine salt thereof. The polymer can impart enhanced dispersion property characteristics to the compositions while also having desirable adhesion and rheological characteristics and thermal stability.

La présente invention concerne des compositions de pigment, par exemple des compositions d'encre et de revêtement colorées par pigmentation, qui contiennent des particules de pigments et un polymère. Le polymère peut être obtenu, par exemple, par copolymérisation de monomères comprenant (1) un halogénure de vinyle, du chlorure de vinyle par exemple, (2) un ester vinylique tel que l'acétate de vinyle et (3) un monomère contenant un groupe acide sulfurique ou un dérivé de ce dernier, par exemple une fraction acrylate ou méthacrylate comportant un groupe acide sulfonique ou un sel métallique ou aminé de ce dernier. Le polymère peut conférer des caractéristiques de propriété améliorée de dispersion aux compositions qui présentent également des caractéristiques souhaitables d'adhérence, de rhéologie et de stabilité à la chaleur.

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