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2 286 333

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C1

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IPC

C07C43/04(2006-01-01)

C07C41/06(2006-01-01)

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Application

2005110737/04, 2005-04-12

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Start date

2005-04-12

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Actual filing date

2005-04-12

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Published

2006-10-27

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Inventor

Slivkin Leonid Grigor'EvichElshin Anatolij IvanovichTomin Viktor PetrovichMikishev Vladimir Anatol'EvichKuzora Igor' Evgen'EvichKazachkov Andrej IvanovichGrishanov Gennadij PetrovichKrashchuk Sergej Gennad'Evich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Neftekhimicheskaja Kompanija"

METHOD FOR PREPARING ESTERS Russian patent published in 2006 - IPC C07C43/04 C07C41/06 

Abstract RU 2286333 C1

FIELD: petrochemical industry, chemical technology.

SUBSTANCE: invention relates to a method for combined synthesis of methyl-tert.-butyl and methylisobutyl esters that are used as high-octane additive to motor fuels. Method involves treatment of isobutylene-containing fraction with methanol in liquid phase at heating, under pressure, in the presence of sulfocation-exchange resin in H+-form as a catalyst. Then reaction products are separated in fractionating column wherein dimethyl ether and isobutanol are added additional to the raw composition in the following mole ratio of components: methanol : isobutylene : dimethyl ether : isobutanol = (0.71-0.82):1:(0.21-0.33):(0.21-0.33), respectively, and treated in liquid phase. Temperature in the reaction zone is maintained in the range 50-70°C and pressure - 1.6 mPa. Invention provides the possibility for simultaneous synthesis of different esters and simplifying the process.

EFFECT: improved preparing method.

1 tbl, 2 dwg, 5 ex

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RU 2 286 333 C1

Authors

Slivkin Leonid Grigor'Evich

Elshin Anatolij Ivanovich

Tomin Viktor Petrovich

Mikishev Vladimir Anatol'Evich

Kuzora Igor' Evgen'Evich

Kazachkov Andrej Ivanovich

Grishanov Gennadij Petrovich

Krashchuk Sergej Gennad'Evich

Dates

2006-10-27—Published

2005-04-12—Filed

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