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2 198 897

(13)

(51)

IPC

(21) (22)

Application

2001133161/04, 2001-12-06

(24)

Start date

2001-12-06

(22)

Actual filing date

2001-12-06

(45)

Published

2003-02-20

(72)

Inventor

Novakov I.A.Navrotskij A.V.Makeev S.M.Orljanskij V.V.Orljanskij M.V.Navrotskij V.A.

(73)

Holder

Volgogradskij Gosudarstvennyj Tekhnicheskij Universitet

METHOD OF PREPARING POLY-1,2-DIMETHYL-5-VINYLPURIDINIUM METHYL SULFATE Russian patent published in 2003 - IPC

Abstract RU 2198897 C1

FIELD: polymerization processes. SUBSTANCE: invention relates to preparation of water-soluble high-molecular cationic polyelectrolytes used in paper-and-pulp industry in papermaking, for acceleration of suspension precipitation and filtration processes when cleaning industrial recycle waters and household sewages. Poly-1,2-dimethyl-5-vinylpuridinium methyl sulfate with molecular weight (2.7-3.4) x 10⁶ is prepared by polymerization of 1,2-dimethyl-5- vinylpuridinium methyl sulfate in aqueous medium in presence of tertbutylperoxypropan-2-ol as polymerization initiator and alpha-amino acid, in particular glycine, leucine, or methionine, in amounts from 2.5 to 30 mmol per 1 kg monomer. EFFECT: reduced polymerization time and amounts of unreacted monomer, and increased molecular weight of polymer. 1 tbl, 11 ex

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RU 2 198 897 C1

Authors

Novakov I.A.

Navrotskij A.V.

Makeev S.M.

Orljanskij V.V.

Orljanskij M.V.

Navrotskij V.A.

Dates

2003-02-20—Published

2001-12-06—Filed