Paul W Harper

US Patent:

43616690, Nov 30, 1982

Filed:

Aug 17, 1981

Appl. No.:

6/293444

Inventors:

Wilbur G. Evans - Oxford OH
Myrl A. Nisely - Hamilton OH
Paul D. Harper - Cincinnati OH

Assignee:

Champion International Corporation - Stamford CT

International Classification:

C08L 3506

US Classification:

524424

Abstract:

An ammonium salt of the reaction product, in an aqueous medium, of a hydrolyzed styrene-maleic anhydride copolymer and a dispersed hydroxy-alkyl modified starch, is used as a component of a binder composition for coating materials. Film-forming coating compositions comprise, as a binder, said reaction product and an elastomeric or resin latex, and further comprise a paper coating pigment, and barium carbonate and ammonium bicarbonate as scavenging agents. Additionally, said compositions may comprise up to about 25%, by weight of the binder, of ammonium zirconyl carbonate.