Mixtures of water-soluble, synthetic, organic polymers with...

Details Mixtures of water-soluble, synthetic, organic polymers with... Mixtures of water-soluble, synthetic, organic polymers with...

C - Chemistry, Metallurgy

08

L

400/1819

C08L 93/04 (2006.01) C08L 33/26 (2006.01) D21H 3/34 (1985.01)

Patent

CA 1257942

ABSTRACT A mixture is disclosed comprising A) a polymer comprising by weight at least 80% of at least one of acrylamide or methacrylamide, up to 5% of at least one of acrylonitrile, methacrylonitrile, vinyl acetate, maleic acid, diisobutAne, or a (meth)acrylic acid ester of a monovalent primary alcohol with 1 to 4 carbon atoms, and 5 to 20% of at least one of acrylic acid or methacrylic acid, and at least one of (B) a completely saponified natural resin or (C) a partially saponified natural resin, (A) being present in 3 to 50% and (B), (C) or (B) plus (C) being present in 97 to 50% by weight of (A) plus (B), (C) or (B) plus (C). Such mixtures are useful in the production of paper and cardboard in order to reduce the absorbency and improve the dry strength of those products.

474011

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