Method of making surface treatment agent

Details Method of making surface treatment agent Method of making surface treatment agent

C - Chemistry, Metallurgy

08

L

400/1301, 6/194,

C08L 1/08 (2006.01) B05D 5/04 (2006.01) C09C 1/02 (2006.01) D21H 19/38 (2006.01) D21H 19/52 (2006.01) D21H 21/52 (2006.01)

Patent

CA 1125455

ABSTRACT OF THE DISCLOSURE Methods for producing pigment for use in sizing agents and filler agents for coating paper, cardboard and the like are disclosed. The method includes providing calcium sulphate dihydrate as-the pigment and beating the calcium sulphate dihydrate in the presence of a dispersing agent comprising a polysaccharide substituted with carboxyl groups, preferably carboxymethyl cellulose.

338626

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