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1 607 359

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A1

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IPC

(21) (22)

Application

4493095/05, 1988-08-11

(22)

Actual filing date

1988-08-11

(45)

Published

1995-05-20

(72)

Inventor

Panarin E.F.Ushakova V.N.Kochetkova I.S.Denisov V.M.Persinen A.A.Bolonina L.N.Pan'Shin A.G.Afinogenov G.E.

METHOD OF PREPARING WATER SOLUTIONS OF N-VINYLPYRROLIDONE COPOLYMERS CONTAINING QUATERNARY AMMONIUM UNSATURATED ACID SALTS Russian patent published in 1995 - IPC

Abstract SU 1607359 A1

FIELD: polymer chemistry and engineering. SUBSTANCE: N-vinylpyrrolidone-unsaturated acid mixture is treated in a water-base solution by a quaternary ammonium base, selected from a group comprising AB-cathamine, alkyl trimethylammonium chloride, cetyl pyridinium chloride and dimethylbenzyl lauryl ammonium bromide. The acid-base ratio is 1:3.5-1:4.0. Total concentration of copolymer solution equals 10-30% by weight. The product is exposed to γ-radiation at a dose ranging from 3.0 to 20.0 kGR. EFFECT: simplified process precluding the use of organic reagents. 1 tbl

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SU 1 607 359 A1

Authors

Panarin E.F.

Ushakova V.N.

Kochetkova I.S.

Denisov V.M.

Persinen A.A.

Bolonina L.N.

Pan'Shin A.G.

Afinogenov G.E.

Dates

1995-05-20—Published

1988-08-11—Filed

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