C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 183/06 (2006.01) C08G 18/40 (2006.01) C08G 18/62 (2006.01) C09D 125/14 (2006.01) C09D 133/04 (2006.01) C09D 133/06 (2006.01) C09D 143/04 (2006.01) C09D 167/03 (2006.01) C09D 175/04 (2006.01) C08L 33/06 (2006.01) C08L 43/04 (2006.01)
Patent
CA 2240534
A coating composition containing film forming binder and a volatile liquid carrier for the binder; wherein the binder contains (a) an acrylic polymer of polymerized monomers selected from the group consisting of an alkyl methacrylate, an alkyl acrylate, each having 1-12 carbon atoms in the alkyl group, isobornyl methacrylate, isobornyl acrylate, hydroxy alkyl methacrylate, hydroxy alkyl acrylate each having 1-4 carbon atoms in the alkyl group, styrene and any mixtures thereof; (b) an acrylosilane polymer of polymerized monomers selected from the group consisting of an alkyl methacrylate, and alkyl acrylate, each having 1-12 carbon atoms in the alkyl group, isobornyl methacrylate, isobornyl acrylate, hydroxy alkyl methacrylate, hydroxy alkyl acrylate each having 1-4 carbon atoms in the alkyl group, styrene and any mixtures thereof and an ethylenically unsaturated hydroxy functional acrylosilane monomer; and (c) an organic polyisocyanate. The clear coating has improved resistance to marring and to acid etching when exposed to natural weathering conditions.
La présente invention concerne une composition pour revêtement contenant un liant filmogène et un véhicule liquide volatil pour le liant. Ce liant contient: a) un polymère acrylique de monomères polymérisés appartenant au groupe comprenant alkyle méthacrylate, alkyle acrylate portant chacun 1 à 12 atomes de carbone dans le groupe alkyle, isobornyle méthacrylate, isobornyle acrylate, hydroxyalkyle méthacrylate, hydroxyalkyle acrylate portant chacun 1 à 4 atomes de carbone dans le groupe alkyle, styrène et tout mélange de ces derniers; b) un polymère d'acrylosilane de monomères polymérisés appartenant au groupe comprenant alkyle méthacrylate, alkyle acrylate portant chacun 1 à 12 atomes de carbone dans le groupe alkyle, isobornyle méthacrylate, isobornyle acrylate, hydroxyalkyle méthacrylate, hydroxyalkyle acrylate portant chacun 1 à 4 atomes de carbone dans le groupe alkyle, styrène, tout mélange de ces derniers et un monomère d'acrylosilane à fonction hydroxy éthyléniquement insaturé; et c) un polyisocyanate organique. Ce revêtement incolore présente une résistance accrue à la détérioration et au mordançage par acide lorsqu'il est exposé à des conditions atmosphériques naturelles.
Lewin Laura Ann
Nickel Gary Warren
Bennett Jones Llp
E.i. Du Pont de Nemours And Company
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