Water-borne aqueous epoxy-ester/acrylate and...

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 18/08 (2006.01) C08G 18/12 (2006.01) C09D 11/10 (2006.01)

Patent

CA 2468128

A water based dual crosslinked resin and printing inks derived therefrom containing (a) a water borne epoxy/ester/acrylate copolymer having reactive keto groups and thylenic unstaruation and (b) a poly(urethane/urea) having terminal amino groups; whre the crosslinking occurs between the reactive keto and terminal amino groups. The resin also contains onium carboxylate salt groups derived from carboxylic acid groups, ammonia or volatile amine so that the crosslinking system is neither neutral nor basic.

Cette invention a trait à une résine réticulée double à base d'eau ainsi qu'à des encres pour impression qui en sont dérivées. Cette résine contient, (a), un copolymère en phase aqueuse de résine époxyde/ester/acrylate ayant des groupes céto réactifs et une insaturation éthylénique et, (b), un poly(uréthanne/urée) possédant des groupes à terminal amino. La réticulation se fait entre les groupes céto réactifs et les groupes à terminal amino. Cette résine contient également des groupes sel onium carboxylate dérivés de groupes acide carboxylique, ammoniac ou amine volatil, de sorte que le système de réticulation n'est ni neutre ni basique.

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