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2 152 958

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C1

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IPC

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Application

99123957/04, 1999-11-16

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Start date

1999-11-16

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Actual filing date

1999-11-16

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Published

2000-07-20

(72)

Inventor

Starovojtova Ja.M.Navrotskij A.V.Novakov I.A.Orljanskij V.V.Navrotskij V.A.

(73)

Holder

Volgogradskij Gosudarstvennyj Tekhnicheskij Universitet

COPOLYMER OF 1,2-DIMETHYL-5-VINYLPYRIDINIUM METHYL SULFATE AND N- VINYLPYRROLIDONE AS CATIONIC FLOCCULANT FOR PURIFICATION OF RETURN AND WASTE WATERS Russian patent published in 2000 - IPC

Abstract RU 2152958 C1

FIELD: waste water treatment. SUBSTANCE: invention provides novel copolymer of 1,2-dimethyl-5-vinylpyridinium methyl sulfate and N-vinylpyrrolidone of general formula , wherein n=75-90 mol % and m = 10-25 mol %, which is characterized by intrinsic viscosity 1.4-1.6 dl/g in 2 N NaCl solution at 30 C and which may be used as cationic flocculant accelerating suspension concentration and filtration processes and purification of return and waste waters. EFFECT: increased degree of return and waste water purification. 3 ex

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RU 2 152 958 C1

Authors

Starovojtova Ja.M.

Navrotskij A.V.

Novakov I.A.

Orljanskij V.V.

Navrotskij V.A.

Dates

2000-07-20—Published

1999-11-16—Filed

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