Vinylamine copolymer, flocculating agent and paper strength...

Details Vinylamine copolymer, flocculating agent and paper strength... Vinylamine copolymer, flocculating agent and paper strength...

C - Chemistry, Metallurgy

08

F

402/484

C08F 226/02 (2006.01) C02F 1/54 (2006.01) D21H 17/34 (2006.01) D21H 17/37 (2006.01) D21H 17/43 (2006.01) D21H 17/45 (2006.01)

Patent

CA 1283748

ABSTRACT OF THE DISCLOSURE Disclosed herein is a vinylamine copolymer having the structural units represented by the following formulas (I), (II), (III), (IV) and (V): Image - [ I ] Image - [ II ] Image - [ III ] Image - [ IV ] Image - [ V ] wherein X? represents an anion or hydroxyl ion, R represents a hydrogen atom or a methyl group, M? represents a hydrogen ion or a monovalent cation, in which the molar fraction of the structural unit (I) is 5 to 85% by mole, the molar fraction of the structural unit (II) is 2 to 85% by mole, the molar fraction of the structural unit (III) is 5 to 80% by mole, the molar fraction of the structural unit (IV) is 2 to 40% by mole, and the molar fraction of the structural unit (V) is 0 to 8% by mole based on the total content of the structural units (III), (IV) and (V), a flocculating agent and a paper strength increasing agent using the vinylamine copolymer, and a process for producing the vinylamine copolymer.

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