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1 840 786

(13)

(51)

IPC

C08C2/06(2006-01-01)

(21) (22)

Application

2210509/04, 1976-10-20

(22)

Actual filing date

1976-10-20

(45)

Published

2009-08-20

(72)

Inventor

Kofman Vadim IgorevichLysanov Valerij AleksandrovichBasov Boris KonstantinovichRabotnov Vadim ValerianovichTimofeev Boris Aleksandrovich

METHOD OF SEPARATING LOW-MOLECULAR DIENE RUBBERS FROM POLYMERISATE Russian patent published in 2009 - IPC C08C2/06

Abstract SU 1840786 A1

FIELD: chemistry.

SUBSTANCE: invention relates to technology of separating diene rubbers from polymerisate and can be applied in oil-chemical industry. Method is realised by processing of polymerisate with water steam, condensation of obtained steam- hydrocarbon mixture and separating of hydrocarbons from condensate, separation of hydrocarbons being carried out by extraction with water-insoluble hydrocarbon solvents with boiling temperature -4-70°C with volume ratio of extragent condensate from 0.3:1 for 2:1.

EFFECT: ensuring more complete extraction of hydrocarbons, reduction of electricity consumption and increase of waste water purity.

5 tbl, 5 ex

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SU 1 840 786 A1

Authors

Kofman Vadim Igorevich

Lysanov Valerij Aleksandrovich

Basov Boris Konstantinovich

Rabotnov Vadim Valerianovich

Timofeev Boris Aleksandrovich

Dates

2009-08-20—Published

1976-10-20—Filed