METHOD FOR PRODUCTION VINYLIDENE FLUORIDE-BASED POLYMERS Russian patent published in 2003 - IPC

Abstract RU 2200167 C1

FIELD: polymer production. SUBSTANCE: vinylidene fluoride-based polymers are prepared via water-emulsion polymerization of vinylidene fluoride or copolymerization of vinylidene fluoride with perfluorinated vinyl monomer initiated by betahydroxyethyl- tert-butyl peroxide at 86-98 C and pressure 2.5 MPa in presence of surfactant and formic acid, monomers in reaction medium being fed additionally as the process advances. Peroxide is added to reaction medium before beginning of polymerization process in amounts 0.001 to 0.01% of the weight of water. EFFECT: enabled production of polymers within a wide condition range with high yield of product per unit of volume of reactor. 6 cl, 2 tbl, 13 ex

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RU 2 200 167 C1

Authors

Loginova N.N.

Madorskaja L.Ja.

Zakharov P.S.

Khachatrjan S.S.

Dates

2003-03-10—Published

2001-07-24—Filed