Interpenetrating networks of polymers

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 18/08 (2006.01) C08G 18/12 (2006.01) C08G 18/62 (2006.01) C08G 18/66 (2006.01) C08G 18/67 (2006.01) C08G 18/72 (2006.01) C08L 75/04 (2006.01) C09D 175/04 (2006.01)

Patent

CA 2335862

A process for producing a coating composition having superior solvent resistance and film hardness comprising an interpenetrating network of a polyurethane component and a functionalized waterborne polymer, wherein the polyurethane component is prepared in the presence of the functionalized waterborne polymer and said polyurethane component and said waterborne polymer are crosslinked directly or indirectly via the chain extender.

L'invention concerne un procédé relatif à l'élaboration de compositions de revêtement qui offrent une résistance supérieure aux solvants et une dureté de feuil, et qui se présentent sous la forme d'un réseau à interpénétration entre un constituant de polyuréthanne et un polymère à base aqueuse fonctionnalisé, le constituant de polyuréthanne étant élaboré en présence du polymère à base aqueuse fonctionnalisé, et les deux éléments à interpénétration étant réticulés directement ou indirectement via l'allongeur de chaîne.

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