Organic pigments

Details Organic pigments Organic pigments

1979-08-29

1981-08-04

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-fiber additive

162168N, 162168NA, 162169, 427391, 428407, 428511, 428513, 428514, 428537, D21H 382

Patent

active

042820600

ABSTRACT:
Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.

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patent: 3489699 (1970-01-01), Battaerd et al.
patent: 3824114 (1974-07-01), Vassiliades et al.
patent: 3840504 (1974-10-01), Keim
patent: 3904562 (1975-09-01), Hopfenberg et al.
patent: 3968319 (1976-07-01), Mani et al.
patent: 4017440 (1977-04-01), Killam
patent: 4017442 (1977-04-01), Gibbs et al.
patent: 4056501 (1977-11-01), Gibbs et al.
patent: 4196253 (1980-04-01), Spence

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