Paper-coating compositions

Details Paper-coating compositions Paper-coating compositions

B - Operations, Transporting

32

B

400/1200, 400/13

B32B 27/10 (2006.01) D21H 19/50 (2006.01) D21H 19/52 (2006.01) D21H 19/54 (2006.01) D21H 19/58 (2006.01) D21H 19/60 (2006.01)

Patent

CA 1151787

ABSTRACT OF THE DISCLOSURE 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 to 50°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, cellu- lose ethers and esters, starch, casein, and alignates. 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.

345217

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