Pigment mixture for the paper industry consisting of calcium car

Details Pigment mixture for the paper industry consisting of calcium car Pigment mixture for the paper industry consisting of calcium car

1990-10-25

1992-06-09

Clingman, A. Lionel

Compositions: coating or plastic

Materials or ingredients

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

106416, 106417, 106463, 106464, C04B 1400, C04B 1420, C09B 102

Patent

active

051203650

ABSTRACT:
A new pigment mixture consisting of 40-80% by weight calcium carbonate and/or dolomite and 20-60% by weight talc or 20-60% of a talc-kaolin mixture or 20-60% by weight of a talc-mica mixture gives substantial improvements in the use in the paper industry, in particular in the production of lightweight coated rotogravure papers.

REFERENCES:
patent: 3940550 (1976-02-01), Delfosse et al.
patent: 4075030 (1978-02-01), Bundy et al.
patent: 4279661 (1981-07-01), Strauch et al.
Weigel "Size and character of grains of nonmetalic mineral fillers" Tech. Paper 296: Dept. of Interior, 1924, pp. 18-20.

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