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2 276 663

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(51)

IPC

C07C11/18(2006-01-01)

C07C5/333(2006-01-01)

(21) (22)

Application

2004129353/04, 2004-10-05

(24)

Start date

2004-10-05

(22)

Actual filing date

2004-10-05

(45)

Published

2006-05-20

(72)

Inventor

Sobolev Evgenij AleksandrovichGajnulin Anas AgtasovichSolodovnikov Anatolij BorisovichNikulin Aleksandr AvenirovichRempel' Elena Grigor'EvnaPetrova Ol'Ga FilippovnaStepanenko Valentin IvanovichShishkin Aleksandr Nikolaevich

(73)

Holder

Zakrytoe Aktsionernoe Obshchestvo Neftekhimicheskaja Kompanija"

METHOD FOR PREPARING ISOPRENE Russian patent published in 2006 - IPC C07C11/18 C07C5/333

Abstract RU 2276663 C1

FIELD: petroleum chemistry, chemical technology.

SUBSTANCE: invention relates to dehydrogenation of isoamylenes to isoprene on iron oxide self-regenerating catalysts. Method involves addition of piperylenes in the concentration up to 4 wt.-% representing a by-side product in manufacturing process of isoprene by the indicated method to the parent isoamylenes before their dehydrogenation. Method provides enhancing selectivity of method for isoamylenes dehydrogenation to isoprene in the presence of iron oxide self-regenerating catalysts.

EFFECT: improved preparing method.

1 tbl, 6 ex

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RU 2 276 663 C1

Authors

Sobolev Evgenij Aleksandrovich

Gajnulin Anas Agtasovich

Solodovnikov Anatolij Borisovich

Nikulin Aleksandr Avenirovich

Rempel' Elena Grigor'Evna

Petrova Ol'Ga Filippovna

Stepanenko Valentin Ivanovich

Shishkin Aleksandr Nikolaevich

Dates

2006-05-20—Published

2004-10-05—Filed