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2 079 510

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IPC

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Application

5020431/04, 1992-01-03

(22)

Actual filing date

1992-01-03

(45)

Published

1997-05-20

(72)

Inventor

Boldyrev A.P.Kurochkin L.M.Gil'Mutdinov N.R.Burganov T.G.Galiev R.G.

(73)

Holder

Nizhnekamskoe Proizvodstvennoe Ob"Edinenie

METHOD FOR CONTROL OF PROCESS OF AQUEOUS DEGASSING OF CAOUTCHOUC Russian patent published in 1997 - IPC

Abstract RU 2079510 C1

FIELD: production of synthetic caoutchouc. SUBSTANCE: during degassing of piperylene caoutchouc viscosity of polymerizate being degassed and concentration of toluene and dimmer piperylene fraction are determined, the process takes place at top of degassing unit of the second step. If viscosity of polymerizate deviates of predetermined value then expense of solvent for caoutchouc is changed. If concentration of toluene and said piperylene fractions are more than their limit values, then temperature in degassing unit of the second step is increased, ratio of caoutchouc and oligomerizate being maintained within 50-60 %. EFFECT: improved quality of desired polymer, decreased energy expense. 1 tbl, 1 dwg

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RU 2 079 510 C1

Authors

Boldyrev A.P.

Kurochkin L.M.

Gil'Mutdinov N.R.

Burganov T.G.

Galiev R.G.

Dates

1997-05-20—Published

1992-01-03—Filed

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