Aqueous coating composition and process for its production,...

C - Chemistry – Metallurgy – 09 – D

Patent

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C09D 127/12 (2006.01) C09D 5/02 (2006.01) C09D 7/12 (2006.01) C09D 127/22 (2006.01) C09D 133/14 (2006.01) C09D 153/00 (2006.01)

Patent

CA 2738988

To provide an aqueous coating composition which has a high storage stability and which is capable of forming a coating film excellent in gloss, adhesion and water resistance; a prosses for its production; and a process for forming a coating film by using the aqueous coating composition. An aqueous coating composition comprising a fluoro-olefin copolymer, a pigment, a copolymer (1) (an A-B type block copolymer which is a copolymer having no fluorine atoms or ionic groups and which comprises hydrophilic blocks (A) having repeating units (a) having a polyoxyethylene chain in the side chain, and hydrophobic blocks (B) having repeating units (b) having a hydrocarbon chain in the side chain) and an aqueous medium.

L'invention concerne des compositions aqueuses de revêtement, qui présentent une stabilité au stockage élevée et qui peuvent former des films de revêtement présentant dexcellentes caractéristiques en termes de brillance, dadhésivité et de résistance à l'eau, leur procédé de fabrication, ainsi quun procédé de fabrication d'un film de revêtement utilisant les compositions aqueuses de revêtement. L'invention concerne des compositions aqueuses de revêtement qui comportent un copolymère d'oléfine fluorée, un pigment, un copolymère (1) (un copolymère séquencé de type A-B qui est un copolymère sans atomes de fluor ou groupes ioniques et qui est constitué de séquences hydrophiles (A) qui comportent des unités récurrentes (a) qui ont des chaînes de polyoxyéthylène sur la chaîne latérale et de séquences hydrophobes (B) qui comportent des unités récurrentes (b) qui ont des groupes hydrocarbonés sur la chaîne latérale) et un milieu aqueux.

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