Process for coating substrates having polar surfaces with...

Details Process for coating substrates having polar surfaces with... Process for coating substrates having polar surfaces with...

C - Chemistry, Metallurgy

08

G

C08G 18/48 (2006.01) C08G 18/08 (2006.01) C08G 18/10 (2006.01) C08G 18/12 (2006.01) C08G 18/28 (2006.01) C08G 18/66 (2006.01) C08J 3/03 (2006.01) C09J 175/08 (2006.01)

Patent

CA 2326523

Claimed is a substrate having a polar surface and, adherent thereto, a polyurethane polymer which was applied as a latex. The latexes of the present invention are chain extended in water with aminoethyl ethanolamine and are prepared and applied in the substantial absence of organic solvents. The prepolymers used to prepare the latexes are substantially free of ionic groups on the polymer backbone.

La présente invention concerne un substrat comportant une surface polaire à laquelle adhère un polymère de polyurétane qui a été appliqué sous forme de latex. Les latex de la présente invention, qui ont subi une extension de chaîne dans l'eau au moyen d'aminoéthyl-éthanolamine, sont préparés et appliqués sensiblement en l'absence de solvants organiques. Les prépolymères utilisés pour préparer ces latex sont sensiblement exempts de groupes ioniques libres sur squelette du polymère.

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