Penford Products Co.

Charles C Nguyen

Edward P Pauley

Verne J Martin

Stephen Rudolph

Henry L Buccigross

Gary R Luebke

Duane E Tupper

D Eric Tupper

A dried film reinforced with coalescable water insoluble polymer particles which are substantially noncoalesced is disclosed. Also disclosed are dried films reinforced with noncoalesced water insoluble polymer particles which are readily water dispersible. Also disclosed are stable aqueous dispersions for formation of such films which comprise (a) a water insoluble component comprising coalescable polymer particles which have a T.sub.g less than 55.degree. C. and a majority of which have a particle size of less than 1 micron; and (b) a water soluble component which comprises a water soluble polymer capable of inhibiting coalescence of the polymer particles, or a water soluble polymer and a component capable of inhibiting coalescence of the polymer particles.

Reinforced films made from water soluble polymers

Board coating compositions are provided comprising a cationic starch and a vinyl acetate polymerization product as protein binder substitutes.

Cationic starch/vinyl acetate containing board coating binders

An aqueous, salt stable polymeric dispersion comprising the reaction product of a thinned, gelatinized starch and one or more vinyl monomers, said monomer(s) comprising at least 10% 1,3-butadiene by weight is disclosed.

Salt stable starch graft polymers

A stable aqueous polymeric dispersion comprising a graft copolymer of thinned, gelatinized starch and one or more vinyl grafting monomers, the vinyl monomers including at least 10% by weight 1,3-butadiene is disclosed. Also disclosed are paper coating color compositions comprising the polymeric dispersions and pigments and improved high gloss papers coated with the coating color compositions.

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Cedar Rapids, IA, United States of America

Charles C Nguyen