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2 526 249

(13)

(51)

IPC

C07C19/12(2006-01-01)

C07C17/06(2006-01-01)

C07C17/10(2006-01-01)

(21) (22)

Application

2012156690/04, 2012-12-25

(24)

Start date

2012-12-25

(22)

Actual filing date

2012-12-25

(45)

Published

2014-08-20

(72)

Inventor

Villemson Aleksandr LeonidovichNovikova Margarita DmitrievnaShabalin Dmitrij AleksandrovichMutnykh Irina SergeevnaBel'Tjugova Ol'Ga NikolaevnaGenkin Mikhail Vladimirovich

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju Kirovo-Chepetsk" Galopolimer Kirovo-Chepetsk)

METHOD OF OBTAINING 1,1-DIFLUOROCHLOROETHANES Russian patent published in 2014 - IPC C07C19/12 C07C17/06 C07C17/10

Abstract RU 2526249 C2

FIELD: chemistry.

SUBSTANCE: invention relates to a method of obtaining 1,1-difluorochloroethanes of formula CF₂Cl-CH_nCl_3-n, where n=0-3, including the gas-phase interaction of 1,1-difluoroethane with chlorine at a higher temperature in the presence of a fluorine-containing initiator and diluents, washing from inorganic products, condensation of organic products and separation of target products by rectification. The method is characterised by an application of 1,1-difluoroethylene as an initiator and 1,1-difluoroethane or 1,1-difluoroethane in a mixture with compounds of formula CF₂X-CH_nCl_3-n, where X=H or Cl, n=1-3 as a diluent.

EFFECT: application of the claimed method makes it possible to obtain simultaneously two or more 1,1-dichloroethanes with high raw material conversion and high selectivity by products.

5 cl, 4 tbl, 6 ex

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RU 2 526 249 C2

Authors

Villemson Aleksandr Leonidovich

Novikova Margarita Dmitrievna

Shabalin Dmitrij Aleksandrovich

Mutnykh Irina Sergeevna

Bel'Tjugova Ol'Ga Nikolaevna

Genkin Mikhail Vladimirovich

Dates

2014-08-20—Published

2012-12-25—Filed