Latex paint compositions and coatings

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 125/14 (2006.01) C09D 5/02 (2006.01) C09D 7/12 (2006.01) C09D 123/02 (2006.01) C09D 125/12 (2006.01) C09D 125/16 (2006.01) C09D 175/04 (2006.01)

Patent

CA 2503005

A latex paint composition comprises (a) a polymer having interpolymerized units that comprise units derived from styrene, methyl styrene, vinyl, or combinations thereof and units derived from one or more acrylates, methacrylates, acrylonitrile, or combinations thereof; (b) hiding pigment; (c) non-cellulosic thickener; and (d) a polyfluorourethane additive that is the reaction product of (i) at least one isocyanate reactant, (ii) at least one fluorochemical compound containing at least one Zerewitinoff hydrogen in an amount sufficient to react with about 5% to about 80% of the isocyanate groups, and (iii) at least one non-fluorinated compound; wherein said latex paint composition has a pigment volume concentration of at least 20% and less than its critical pigment volume concentration.

La présente invention concerne une composition de peinture de latex qui comprend (a) un polymère possédant des unités interpolymérisées constituées d'unités dérivées de styrène, de styrène méthyle, de vinyle ou de combinaisons de ces composés et d'unités dérivées d'un ou de plusieurs acrylates, méthacrylates, acrylonitrile ou de combinaisons de ces composés, (b) des pigments opacifiants, (c) un épaississant non cellulosique et, (d) un additif polyfluoro-uréthanne qui est le produit de réaction (i) d'au moins un réactif isocyanate, (ii) d'au moins un composé fluorochimique contenant au moins un hydrogène de Zerewitinoff dans une quantité suffisante pour réagir avec environ de 5% à 80% environ des groupes isocyanates et, (iii) d'au moins un composé non fluoré. Cette composition de peinture de latex possède une concentration de volume de pigments d'au moins 20% et inférieure à sa concentration de volume de pigments critique.

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