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1 330 958

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Application

3874764/04, 1985-01-11

(22)

Actual filing date

1985-01-11

(45)

Published

1998-02-20

(72)

Inventor

Gizzatullin R.R.Galiev R.G.Vasil'Ev I.M.Zakirova M.F.Komarov V.A.Liakumovich A.G.Matrosov N.I.Petukhov A.A.Saljamov D.S.Serebrjakov B.R.Abljakimov Eh.I.Sapunov V.N.

METHOD OF STYRENE SYNTHESIS Russian patent published in 1998 - IPC

Abstract SU 1330958 A1

FIELD: organic chemistry, chemical technology. SUBSTANCE: synthesis of styrene is carried out by steam-phase dehydration of methylphenylcarbinol fraction followed by treatment of contact gas with inhibitor - a mixture of hydroquinone and p-dioxime quinone taken at amount 0.005-0.05% of contact mass at 280-310 C for 0.1-1 s. Then contact gas is cooled with air and washed with water. Styrene is isolated by rectification in the presence of indicated inhibitor of thermopolymerization. The synthesized styrene has carbonyl compounds (0.052 wt.-% as measured for benzaldehyde) at their total content - 0.01-0.009%. Total styrene loss is decreased from 39.83% (by known method - crude product and rectificate) to 2.94% by proposed method. EFFECT: improved method of synthesis, decreased loss. 5 tbl

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SU 1 330 958 A1

Authors

Gizzatullin R.R.

Galiev R.G.

Vasil'Ev I.M.

Zakirova M.F.

Komarov V.A.

Liakumovich A.G.

Matrosov N.I.

Petukhov A.A.

Saljamov D.S.

Serebrjakov B.R.

Abljakimov Eh.I.

Sapunov V.N.

Dates

1998-02-20—Published

1985-01-11—Filed

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