Bayer Corporation

Cytec Technology Corporation

Rajiv Bazaj

David L Dauplaise

Gerald J Guerro

A paper or board is coated with a composition comprising from 30-95 parts by weight of a synthetic, carboxylated surface size containing at least about 40 mole percent of hydrophobic groups and at least about 25 mole percent of carboxylated groups such as styrene/acrylic acid copolymer, and from 5-70 parts by weight of a substantially hydrophilic polyacrylamide such as a cationic or anionic polyacrylamide.

Paper or board with surface of carboxylated surface size and polyacrylamide

A composition useful in paper and board making comprises a carboxylated surface size containing at least 40 mole percent of hydrophobic groups and at least about 25 mole percent of carboxylated groups such as styrene-(meth)acrylic aicd copolymers or styrene-maleic acid (anhydride or salt) copolymers, a hydrophilic polyacrylamide and a crosslinking agent such as glyoxylated vinylamide polymers, formaldehyde, melamine-formaldehyde condensates and glyoxyl-extended materials.

Paper or board treating composition of carboxylated surface size, polyacrylamide and crosslinker

A composition used in paper and board making comprises a carboxylated surface size containing at least 40 mole percent of hydrophobic groups such as styrene/(meth)acrylic acid copolymers or styrene/maleic acid (anhydride or salt) copolymers, and a hydophilic polyacrylamide.

Paper or board treating composition of carboxylated surface size and

Compositions containing hydrophilic polyacrylamide and hydrophobic surface size agents and the methods for using such compositions in paper and board to improve printability, sizing and strength are provided in the instant invention.

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Stamford, CT, United States of America

Rajiv Bazaj