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2 313 511

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(51)

IPC

C07C2/12(2006-01-01)

C07C15/46(2006-01-01)

(21) (22)

Application

2006109901/04, 2006-03-27

(24)

Start date

2006-03-27

(22)

Actual filing date

2006-03-27

(45)

Published

2007-12-27

(72)

Inventor

Dzhemilev Usein MemetovichKutepov Boris IvanovichGrigor'Eva Nellja GennadievnaGaljautdinova Regina RimovnaJamali Elena IvanovnaPavlov Mikhail Leonardovich

(73)

Holder

Institut Neftekhimii I Kataliza Ran

METHOD FOR PREPARING LINEAR DIMERS OF α-METHYLSTYRENE Russian patent published in 2007 - IPC C07C2/12 C07C15/46

Abstract RU 2313511 C1

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to a method for synthesis of linear unsaturated dimmers of α-methylstyrene that are used as modifying agents in manufacturing polymers. Method is carried out by the dimerization reaction in the presence of zeolite Y at the mole ratio SiO₂/Al₂O₃ = 6.2-7.0 in NaH-form and ionic exchange degree 40-60%. The amount of catalyst is 1-5 wt.-%, the reaction temperature is 40-80⁰C. Invention provides increasing working time of catalyst and improving indices of the process.

EFFECT: improved method of synthesis.

9 ex

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RU 2 313 511 C1

Authors

Dzhemilev Usein Memetovich

Kutepov Boris Ivanovich

Grigor'Eva Nellja Gennadievna

Galjautdinova Regina Rimovna

Jamali Elena Ivanovna

Pavlov Mikhail Leonardovich

Dates

2007-12-27—Published

2006-03-27—Filed