Title: Treatment of clays with cationic polymers to prepare high bulking pigments
Application Number: 86105012 Application Date: 1986.08.15
Publication Number: 1014832 Publication Date: 1987.11.25
Approval Pub. Date: 1991.01.23 Granted Pub. Date: 1991.01.23
International Classifi-cation: C09C1/28;C09D1/02
Applicant(s) Name: Engelhard Corp. Address:
Inventor(s) Name: Richard J. Pratt
Attorney & Agent: DUAN CHENGEN XU RUXUN
Abstract:
    A highly bulked kaolin pigment is prepared by mixing a small but effective amount of a water-soluble cationic polyelectrolyte flocculant with a kaolin clay pigment in the presence of water to prepare a bulked clay pigment product. Upon dewatering, the resultant polyelectrolyte treated clay product can be dispersed to form high solids clay-water slurries useful in making aqueous coating colors suitable for manufacturing coating lightweight publication papers or the pigment can be used as a filler for paper webs.
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