Coating resin composition

C - Chemistry – Metallurgy – 09 – D

Patent

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C09D 157/04 (2006.01) C09D 133/06 (2006.01) C09D 135/00 (2006.01)

Patent

CA 2167717

A non-aqueous dispersion type coating resin composition which is excellent in pigment dispersibility and adhesive properties to various base material surfaces, can be made to have a high solid content, can be applied thick, and can form coat having good physical properties such as water resistance, alkali resistance and weatherability, and comprises (A) an organic solvent comprising an aliphatic hydrocarbon solvent as a main component, (B) an acrylic polymer which contains therein 0.2 to 30 weight 96 of a repeating unit represented by the following formula Image wherein, R1 represents a hydrogen atom or methyl group, m is an integer of 3 to 11, and n is a number of 1 to 10, and is soluble in the above organic solvent (A), and (C) polymer fine particles substantially insoluble in the above organic solvent (A).

Une composition de résine pour revêtement du type dispersion non aqueuse comprend: (A) un solvant organique comprenant principalement un hydrocarbure aliphatique, (B) un polymère acrylate soluble dans le solvant (A) et contenant de 0,2 à 30 % en poids de motifs de répétition représentés par la formule générale (I), dans laquelle R<1> représente hydrogène ou méthyle; m représente un nombre entier de 3 à 11; et n représente un nombre de 1 à 10, et (C) de fines particules polymères pratiquement insolubles dans le solvant (A). Cette composition présente une excellente dispersion des pigments ainsi qu'une excellente adhésion sur des surfaces de divers matériaux de base, et fournit une teneur élevée en solides et forme un revêtement épais, ainsi qu'un film de revêtement ayant de bonnes propriétés, telles que la résistance à l'eau, aux alcalins et aux intempéries.

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