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2 077 485

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C1

(51)

IPC

(21) (22)

Application

94017966/25, 1994-05-16

(22)

Actual filing date

1994-05-16

(45)

Published

1997-04-20

(72)

Inventor

Pavlenko V.I.Kirijak I.I.Shevtsov I.P.

(73)

Holder

Pavlenko Vjacheslav IvanovichKirijak Ivan Ivanovich

METHOD OF MODIFYING CALCIUM CARBONATE Russian patent published in 1997 - IPC

Abstract RU 2077485 C1

FIELD: production of fillers for polymers and rubbers. SUBSTANCE: calcium carbonate suspension with solids to liquid ratio is treated first with 0.5-0.8% sodium aluminoethylsiliconate aqueous solution wherein Si/Al ratio is 2: 1 and then with 7.7-12.3% lead nitrate aqueous solution followed by drying suspension in spray drier. EFFECT: improved procedure. 2 cl, 2 tbl

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RU 2 077 485 C1

Authors

Pavlenko V.I.

Kirijak I.I.

Shevtsov I.P.

Dates

1997-04-20—Published

1994-05-16—Filed

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