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IPC

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Application

97114180/04, 1997-08-19

(22)

Actual filing date

1997-08-19

(45)

Published

1999-08-27

(72)

Inventor

Mustafin Kh.V.Garifullin F.I.Borejko Ju.I.Altynbaev U.I.Plaksunov T.K.Zajdullin A.A.Shcherban' G.T.

(73)

Holder

Garifullin Farid Iskhakovich

METHOD OF PRODUCING LOW-MOLECULAR POLYOLEFINS Russian patent published in 1999 - IPC

Abstract RU 2135521 C1

FIELD: polymer production and lubricating oil additives. SUBSTANCE: production of low-molecular polyolefins, useful as lubricating oil additives, etc. , is carried out under shear information conditions in two steps. First-step process conducted at 250-380 C includes vacuum separation of polyolefin destruction-origin hydrocarbons from liquid reaction product. Second thermal polyolefin destruction step is carried out in several zones at 325-380 C in 5-10 mm bed formed between two coaxially arranged tubes (ratio of coaxial bed length to its outside diameter 35-55), process being carried out both in one and in a few parallel coaxial beds and polyolefin destruction-origin hydrocarbons being separated after each destruction step. EFFECT: eliminated dangerous destruction process temperature rise and increased process efficiency. 3 cl, 1 dwg, 15 ex

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RU 2 135 521 C1

Authors

Mustafin Kh.V.

Garifullin F.I.

Borejko Ju.I.

Altynbaev U.I.

Plaksunov T.K.

Zajdullin A.A.

Shcherban' G.T.

Dates

1999-08-27—Published

1997-08-19—Filed

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