Method for producing pigment for use in sizing compositions
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United States of America Patent
Stats
-
Jan 12, 1982
Grant Date -
N/A
app pub date -
Oct 24, 1979
filing date -
Oct 30, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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Cited Art Landscape
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