Aqueous dispersions, of a graft copolymer for paper coating

C - Chemistry – Metallurgy – 08 – F

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400/3028

C08F 291/00 (2006.01) D21H 19/58 (2006.01)

Patent

CA 1210543

AQUEOUS DISPERSIONS, THEIR PREPARATION AND THEIR USE Abstract of the Disclosure Aqueous dispersions having a solids content of from 35 to 65% by weight of a graft copolymer obtained from a graft substrate of an aqueous dispersion based on styrene, butadiene, isoprene, chloroprene, acrylonitrile, (meth)- acrylic acid-C1-C12-alkyl esters, (meth) acrylic acid, itaconic acid, fumaric acid, maleic acid, vinyl acetate and vinyl chloride and mixtures of two or more of the above mentioned compounds on which are grafted one or more hydrophilic monomers from the group of unsaturated carboxylic acid amides, vinyl pyrrolidiene and ethylene oxide, wherein up to 600/o of the hydrophilic monomers may be replaced by one or more hydrophobic monomers, are suitable as binders for improved paper coating compounds free from cobinders. Le A 20 683

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