METHOD FOR PRODUCING A MINERAL FILLER Russian patent published in 2018 - IPC C09C1/02 C09C3/10 C01F11/18 B02C19/00

Abstract RU 2647026 C1

FIELD: technological processes.

SUBSTANCE: invention relates to preparation of a mineral filler used in polymer compositions, paper production, construction, cosmetics and other fields. Method includes a step of dry grinding of a calcium carbonate-containing material with at least one grinding agent selected from copolymers of styrene with maleic anhydride and/or styrene-maleic anhydride copolymer derivatives.

EFFECT: inventive method allows to obtain a mineral filler with high productivity and high grinding efficiency.

15 cl, 3 tbl

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RU 2 647 026 C1

Authors

Rentsch, Samuel

Blum, Rene Vinzenz

Gane, Patrick A. C.

Dates

2018-03-13—Published

2015-02-12—Filed