Paper-sizing agents containing aqueous, solvent-free...

Details Paper-sizing agents containing aqueous, solvent-free... Paper-sizing agents containing aqueous, solvent-free...

D - Textiles, Paper

21

H

D21H 17/45 (2006.01) D21H 17/37 (2006.01) D21H 21/16 (2006.01) D21H 23/04 (2006.01)

Patent

CA 2194602

The invention concerns agents for the mass and/or surface sizing of paper, said agents containing aqueous, solvent-free dispersions of cationic polymers. The invention also concerns a method of sizing paper by using these agents. The sizing agents according to the invention, which can be used for both mass and surface sizing, contain as active substance copolymers of: a) 30 to 70 mol % of a monomer I, with b) 70 to 30 mol % of a monomer II and optionally c) 0 to 20 mol % of C8 to C30 monoolefins, and d) 0 to 10 mol % of further monomers which can be copolymerized with a), b) and optionally c), the total amount of monomers a), b), c) and d) being 100 mol %.

L'invention concerne des produits destinés au collage en pile et/ou en surface du papier, lesdits produits contenant des dispersions aqueuses sans solvant de polymères cationiques. L'invention concerne également un procédé de collage de papier au moyen de ces produits. Ces produits de collage pouvant être utilisés pour le collage en pile et en surface du papier, contiennent, sous forme de substance active, des copolymères de (a) 30-70 % en moles d'un monomère (I) et (b) 70-30 % en moles d'un monomère (II) ainsi que le cas échéant (c) 0-20 % en moles de mono-oléfines C¿8?-C¿30? et (d) 0-10 % en moles d'autres monomères pouvant être copolymérisés avec (a), (b) et éventuellement (c), la somme des monomères (a), (b), (c) et (d) s'élevant à 100 % en moles.

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