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2 042 690

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Application

5030058/05, 1992-02-27

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Actual filing date

1992-02-27

(45)

Published

1995-08-27

(72)

Inventor

Dorofeev V.I.Mikhalev M.V.Ryl'Kov A.A.Kudrjavtsev L.D.Molodyka A.V.Rachinskij A.V.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa

METHOD OF OPERATION OF PERIODIC PROCESS OF THERMOELASTOPLASTIC POLYMERIZATION Russian patent published in 1995 - IPC

Abstract RU 2042690 C1

FIELD: production of synthetic rubber. SUBSTANCE: method is realized in parallel working reactors by sequence reagent loading and regulation of melt index and catalyst dose change. Firstly, periodic polymerization process of butadiene-styrene thermoelastoplastic ДСТЗОР is carried out in reactors followed by repumping product into mixer. Catalyst dose is corrected depending on the melt index ДСТЗОР in the mixer, melt index of thermoelastoplastic ДСТЗОР2ОПС filled with polystyrene is regulated depending on the melt index ДСТЗОР in the mixer by catalyst dose change at periodic polystyrene polymerization in the separate reactor and mixing polystyrene with ДСТЗОР. At lower melt index ДСТЗОР dose of catalyst for polystyrene polymerization is increased, and at higher melt index this dose is diminished. EFFECT: improved method of operation. 1 dwg

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RU 2 042 690 C1

Authors

Dorofeev V.I.

Mikhalev M.V.

Ryl'Kov A.A.

Kudrjavtsev L.D.

Molodyka A.V.

Rachinskij A.V.

Dates

1995-08-27—Published

1992-02-27—Filed

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