Process for the production of a pigment-based agent suitable for

Details Process for the production of a pigment-based agent suitable for Process for the production of a pigment-based agent suitable for

1988-01-27

1990-10-16

Lieberman, Paul

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106486, 106487, 428403, C09C 300, C09D 1700

Patent

active

049631926

ABSTRACT:
The invention relates to a process for the production of an agent suitable for the paper and board industry and improving the printability of paper and board, wherein an aqueous colloidal system is prepared from at least one pigment and at least one water-soluble or water-swellable hydrogel containing anionic groups, said system is subjected to coacervation by means of a quarternary organic ammonium salt and, if appropriate, the product obtained in the coacervation is concentrated by sedimentation, centrifuging and/or filter-pressing, to the agent produced and to the use thereof in the paper and board industry.

REFERENCES:
patent: 4170487 (1979-10-01), Robertson et al.
patent: 4291112 (1981-09-01), Lu
patent: 4412018 (1983-10-01), Finlayson et al.
patent: 4517112 (1985-05-01), Mardis et al.
patent: 4695511 (1987-09-01), Goodman et al.

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