METHOD FOR PRODUCTION OF COPOLYMERS OF N-VINYLPYRROLIDONE WITH CROTONIC ACID SALTS Russian patent published in 2002 - IPC

Abstract RU 2188831 C2

FIELD: polymer production. SUBSTANCE: method consists in carrying out radiation polymerization of N- vinylpyrrolidone/crotonic acid mixture (50-87 and 13-50 mol % respectively) in aqueous solution, wherein concentration of monomers varies between 10 and 55 mol %, at pH 8.0-11.5 in presence of 0.3 to 1.5 wt % of water-soluble peroxide. Temperature in working channel is 40-50 C and summary radiation dose 2.0-5.7 Mrad. EFFECT: enabled use of aqueous polymerization medium with no use of inflammable alcohols. 1 tbl, 23 ex

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RU 2 188 831 C2

Authors

Panarin E.F.

Kochetkova I.S.

Dates

2002-09-10—Published

1997-05-06—Filed