Novel polymers

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 2/46 (2006.01) C08F 8/00 (2006.01) C08F 220/00 (2006.01) G02B 1/04 (2006.01) G02C 7/04 (2006.01) C08G 77/442 (2006.01)

Patent

CA 2655360

The invention relates to novel crosslinkable copolymers which are obtainable by (a) copolymerizing at least two different hydrophilic monomers selected from the group consisting of N,N-dimethyl acrylamide (DMA), 2-hydroxyethyl acrylate (HEA), glycidyl methacrylate (GMA), N-vinylpyrrolidone (NVP), acrylic acid (AA) and a C1-C4-alkoxy polyethylene glycol (meth)acrylate having a weight average molecular weight of from 200 to 1500, and at least one crosslinker comprising two or more ethylenically unsaturated double bonds in the presence of a chain transfer agent having a functional group; and (b) reacting one or more functional groups of the resulting copolymer with an organic compound having an ethylenically unsaturated group.

L'invention porte sur de nouveaux copolymères réticulables qui peuvent être obtenus par (a) copolymérisation d'au moins deux monomères hydrophiles différents choisis dans le groupe constitué par le N,N-diméthyl acrylamide (DMA), l'acrylate de 2-hydroxyéthyle (HEA), le méthacrylate de glycidyle (GMA), la N-vinylpyrrolidone (NVP), l'acide acrylique (AA) et un (méth)acrylate d'alcoxy en C1-C4 polyéthylène glycol ayant une masse moléculaire moyenne en poids de 200 à 1.500, et au moins un réticulant comprenant deux doubles liaisons à insaturation éthylénique, ou davantage, en présence d'un agent de transfert de chaîne ayant un groupe fonctionnel; et (b) réaction d'un ou plusieurs groupes fonctionnels du copolymère résultant avec un composé organique ayant un groupe à insaturation éthylénique.

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