Improved nvf copolymer process

Details Improved nvf copolymer process Improved nvf copolymer process

C - Chemistry, Metallurgy

08

F

C08F 8/12 (2006.01)

Patent

CA 2736873

Disclosed herein is a water-soluble copolymer formed by copolymerizing N- vinylformamide and one or more vinyl C1-C10 alkyl esters, and then hydrolyzing from 30 to 100 mol% of the formyl groups from the copolymerized units to form amino groups and from 30 to 100 mol% of the C1-C10 alkyl ester groups from the copolymerized units to form hydroxyl groups, wherein the copolymer has a unimodal molecular weight distribution as evidenced by essentially one peak in a gel permeation gradient elution chromatographic analysis. A process to produce the polymer is also disclosed.

La présente invention concerne un copolymère hydrosoluble formé par copolymérisation de N-vinylformamide et dun ou plusieurs esters vinyliques dalkyle en C1-C10, puis hydrolyse de 30 à 100 % en moles des groupes formyle des motifs copolymérisés pour former des groupes amino et de 30 à 100 % en moles des groupes ester dalkyle en C1-C10 des motifs copolymérisés pour former des groupes hydroxyle, le copolymère ayant une distribution de poids moléculaire unimodale comme indiqué par la présence de pratiquement un seul pic dans une analyse chromatographique à gradient délution par perméation de gel. La présente invention concerne en outre un procédé pour produire le polymère.

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