Process for the preparation of barium sulfate of increased flowa

Details Process for the preparation of barium sulfate of increased flowa Process for the preparation of barium sulfate of increased flowa

1984-07-31

1986-05-13

Niebling, John F.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

424 4, 424 5, 429 1, 429 19, C01F 1146

Patent

active

045885745

ABSTRACT:
Barium sulfate suitable for the preparation of radiographic contrast agents of increased flowability and density is obtained by a high temperature treatment at 700.degree. to 1,200.degree. C. and preferably at 800.degree. to 1,000.degree. C. The barium sulfate so sintered is distinguished by a bulk density of 2.5 to 3 g/ml and its aqueous suspension, containing 200 g of barium sulfate per 100 ml, is distinguished by a viscosity of no more than 1,000 mPas. Radiographic contrast agents containing at least 200 g of sintered barium sulfate per 100 ml are outstandingly suitable for the difficult double contrast visualization of the stomach and gastric mucosa.

REFERENCES:
patent: 2039432 (1936-05-01), McCallum
patent: 2056929 (1936-10-01), Moore
patent: 2159909 (1939-05-01), Price
patent: 2509585 (1950-05-01), Brown
patent: 3689630 (1972-09-01), Kikuchi et al.

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