Acrylic polymer compounds

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 220/12 (2006.01) C08F 220/28 (2006.01) C09D 133/06 (2006.01) C09J 133/06 (2006.01)

Patent

CA 2253922

An acrylic polymer of polymerized monomers of about 55-80 % by weight of an alkyl methacrylate having 1-12 carbon atoms in the alkyl group, and alkyl acrylate having 1-12 carbon atoms in the alkyl group, substituted or unsubstituted aryl methacrylate or acrylate, substituted or unsubstituted alicyclic methacrylate or acrylate, substituted or unsubstituted cyclic methacrylate or acrylate, a polymerizable vinyl aromatic monomer, vinyl pyrrolidone or any mixtures of the above monomers, and contains about 5-40 % by weight of acetoacetoxy ethyl methacrylate and about 5-15 % by weight of ethylenically unsaturated acid and the acrylic polymer has a weight average molecular weight of about 10,000-3,000,000 and a glass transition temperature of about -20 to 50 ~C.

Ce polymère acrylique comprend des monomères polymérisés, lesquels représentent 55 à 80 % en poids et se composent d'un méthacrylate d'alkyle possédant 1 à 12 atomes de carbone dans le groupe alkyle, d'un acrylate d'alkyle possédant 1 à 12 atomes de carbone dans le groupe alkyle, d'un méthacrylate ou acrylate d'aryle substitué ou non, d'un méthacrylate ou acrylate alicyclique substitué ou non, d'un méthacrylate ou acrylate cyclique substitué ou non, d'un monomère aromatique vinylique polymérisable, d'une vinylpyrrolidone ou de tout mélange des monomères ci-dessus; il contient environ 5 à 40 % en poids d'acéto-acétoxy méthacrylate d'éthyle et environ 5 à 15 % en poids d'acide à insaturation éthylénique, sa masse moléculaire moyenne est de l'ordre d'environ 10.000 à 3.000.000 et sa température de transition vitreuse se situe entre environ -20 et 50 ·C.

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