Paper-coating compositions

Details Paper-coating compositions Paper-coating compositions

1980-02-25

1981-11-24

Nielsen, Earl A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 8, 260 174ST, 260 296RW, 260 296WA, 260 297W, 260 297WA, C08J 306, C08L 910, C08L 908, C08L 3308

Patent

active

043023673

ABSTRACT:
An improved paper-coating composition containing, per 100 parts by weight of finely divided pigment, from 5 to 25 parts by weight of one or more copolymers, having a glass transition temperature of from -40.degree. to 50.degree. C., in the form of an aqueous dispersion, and from 0.1 to 10 parts by weight of one or more water-soluble or water-swellable co-binders selected from the group comprising polyvinyl alcohol, cellulose ethers, starch, casein, alginates and high molecular weight carboxyl-containing emulsion polymers. The co-binder is added to the paper-coating composition in the form of a water-in-oil emulsion. Paper-coating compositions having high water retention are obtained, and papers coated with such compositions have improved water resistance.

REFERENCES:
patent: 2998400 (1961-08-01), French
patent: 3844990 (1974-10-01), Lindemann et al.
patent: 3979349 (1976-09-01), Fink et al.
patent: 3996180 (1976-12-01), Kane
patent: 4157995 (1979-06-01), Schenk et al.

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