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2 099 185

(13)

(51)

IPC

(21) (22)

Application

94017642/25, 1994-05-06

(22)

Actual filing date

1994-05-06

(45)

Published

1997-12-20

(72)

Inventor

Alekseev A.S.Krivoputskij V.S.Krivoputskaja L.M.

(73)

Holder

Alekseev Anatolij SemenovichKrivoputskij Vladimir StepanovichKrivoputskaja Lidija Mikhajlovna

METHOD OF PRODUCING GRANULATED POLYACRYLAMIDE Russian patent published in 1997 - IPC

Abstract RU 2099185 C1

FIELD: polymer materials. SUBSTANCE: material is frozen at temperature from -16 to - 18 C and then disintegrated, whereas processed in reagent are granules before separation of ammonium sulfate is completed. According to invention, freezing is carried out until 60 to 70% ammonium sulfate is separated and, as reagent, acetone or ethanol are utilized. EFFECT: improved procedure. 4 cl

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RU 2 099 185 C1

Authors

Alekseev A.S.

Krivoputskij V.S.

Krivoputskaja L.M.

Dates

1997-12-20—Published

1994-05-06—Filed