Paper/paper laminate-opacifying TiO.sub.2 particulates

Details Paper/paper laminate-opacifying TiO.sub.2 particulates Paper/paper laminate-opacifying TiO.sub.2 particulates

1992-12-30

1998-01-06

Bell, Mark L.

Paper making and fiber liberation

Processes and products

Non-fiber additive

106447, 106448, 1621815, 162183, D21H 2100, C09C 136

Patent

active

057050333

ABSTRACT:
Unique titanium dioxide (TiO.sub.2) particulates have an especially high physicochemical affinity for cellulosic fibers and, thus, are well suited as opacifying pigments for paper and paper laminates, and include a zeta potential-adjusting amount of at least one cationic polymer, e.g., a polymer of a quaternary ammonium, sulfonium or phosphonium salt or a copolymer of acrylamide with a cationic comonomer, fixed to the face surfaces thereof.

REFERENCES:
patent: 3425855 (1969-02-01), Barksdale et al.
patent: 4495245 (1985-01-01), Zunker
patent: 4874466 (1989-10-01), Savino
patent: 5169441 (1992-12-01), Lauzon
World Patents Index Latest Accession No. 81-14401D, Week 09, Derwent Publications Ltd., London, Great Britain. no date.

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