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2 082 724

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IPC

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Application

93045933/04, 1993-09-27

(22)

Actual filing date

1993-09-27

(45)

Published

1997-06-27

(72)

Inventor

Zavodchikova N.N.Zhukova S.V.Chumakov L.V.

(73)

Holder

Gosudarstvennyj Nauchno-Issledovatel'Skij Institut Khimii I Tekhnologii Polimerov Im.Akad.V.A.Kargina S Opytnym Zavodom

PROCESS FOR PREPARING GRAFTED COPOLYMER OF VINYL CHLORIDE WITH ETHYLENE-VINYL ACETATE COPOLYMER Russian patent published in 1997 - IPC

Abstract RU 2082724 C1

FIELD: preparation of grafted vinyl chloride copolymers with ethylene-vinyl acetate copolymer for manufacturing film materials and for medicinal materials. SUBSTANCE: suspension copolymerization of VC with EVA at weight ratio thereof from 10-75 to 90-25, respectively, in the presence of initiator solution of di-2-ethylhexyl- or di-2-butoxyethylperoxy bicarbonate. Peroxydicarbonate is prepared directly in polymerization zone by reacting chloformate in amount of 0.14 wt part per 100 weight parts of VC with peroxide in aqueous alkaline medium at chloroformate to alkali molar ratio of 1:2. EFFECT: more efficient, preparation process. 1 tbl

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RU 2 082 724 C1

Authors

Zavodchikova N.N.

Zhukova S.V.

Chumakov L.V.

Dates

1997-06-27—Published

1993-09-27—Filed

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