Process for producing barium sulfate with reactive surface

Details Process for producing barium sulfate with reactive surface Process for producing barium sulfate with reactive surface

1988-05-27

1990-01-16

Straub, Gary P.

Compositions: coating or plastic

Materials or ingredients

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

106471, 423544, C01F 542, C01F 1146, C08K 324

Patent

active

048940933

ABSTRACT:
Barium sulfate which has a chemically reactive surface is produced by a precipitation of barium ions by means of sulfate ions in an aqueous medium. In order to provide barium sulfate as a filler having functional properties, the precipitation is effected as a coprecipitation in the presence of additional anions of water-soluble compounds, which anions are coprecipitable with barium ions to form difficulty soluble barium compounds. The reactive product which contains heteroatoms is subjected to an aftertreatment which is suitable for the use that is intended in a given case.

REFERENCES:
patent: 1398468 (1921-11-01), Schumacher
patent: 2013401 (1935-09-01), Booth
patent: 2156727 (1939-05-01), Korinth
patent: 2509585 (1950-05-01), Brown
patent: 4272296 (1981-06-01), Balducci et al.

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