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2 036 203

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C1

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IPC

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Application

5048001/05, 1992-06-16

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Actual filing date

1992-06-16

(45)

Published

1995-05-27

(72)

Inventor

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

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa

METHOD FOR CONTROLLING THERMOELASTOPLASTIC RUBBER POLYMERIZATION PROCESS Russian patent published in 1995 - IPC

Abstract RU 2036203 C1

FIELD: chemical engineering; synthetic rubber production. SUBSTANCE: method involves controlling thermoelastoplastic rubber polymerization process by polymerizing and mixing branched thermoelastoplastic and polystyryl lithium and controlling melt index by varying catalyst dose. Polystyryl lithium and branched thermoelastoplastic are obtainable in uniform maximum concentration polymerizate, polystyryl lithium polymerization process being carried out in reactor battery, its melt index being controlled depending on battery outlet viscosity by influencing catalyst consumption in the first apparatus. Polystyryl lithium and branched thermoelastoplastic are mixed in flowing, polystyryl lithium concentration in branched thermoelastoplastic rubber being stabilized by controlling their flow rate relation, finished product melt index is controlled by influencing polystyryl lithium polymerization catalyst consumption depending on viscosity measured after polystyryl lithium and branched thermoelastoplastic rubber having been mixed. Catalyst dose to carry out branched thermoelastoplastic polymerization is increased or lowered depending on the mean catalyst dose to carry out polystyryl lithium polymerization being increased or lowered. EFFECT: higher production output, lower production costs. 1 dwg

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RU 2 036 203 C1

Authors

Dorofeev V.I.

Mikhalev M.V.

Kudrjavtsev L.D.

Molodyka A.V.

Ryl'Kov A.A.

Rachinskij A.V.

Dates

1995-05-27—Published

1992-06-16—Filed

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