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IPC

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Application

2003110632/04, 2003-04-14

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Start date

2003-04-14

(22)

Actual filing date

2003-04-14

(45)

Published

2004-11-10

(72)

Inventor

Dzhemilev U.M.Grigor'Eva N.G.Kutepov B.I.Pavlov M.L.Patrikeev V.A.Galjautdinova R.R.Jamali E.I.

(73)

Holder

Gu Institut Neftekhimii I Kataliza An Rb I Unts Ran

PROCESS FOR PRODUCTION OF UNSATURATED ALPHA-METHYLSTYRENE DIMERS Russian patent published in 2004 - IPC

Abstract RU 2239623 C1

FIELD: industrial organic synthesis.

SUBSTANCE: α-methylstyrene is subjected to dimerization in presence of zeolite-containing cracking catalyst (Tseokar-10) preliminarily subjected to high-temperature (500-650^оС) treatment in presence of water steam over a 8-12 h period, amount of catalyst being 5 to 20% and reaction temperature 60 to 120^оС. Yield of product is 80-83%.

EFFECT: increased productivity and simplified process.

1 tbl, 8 ex

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RU 2 239 623 C1

Authors

Dzhemilev U.M.

Grigor'Eva N.G.

Kutepov B.I.

Pavlov M.L.

Patrikeev V.A.

Galjautdinova R.R.

Jamali E.I.

Dates

2004-11-10—Published

2003-04-14—Filed