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2 344 115

(13)

(51)

IPC

C07C7/20(2006-01-01)

C07C11/16(2006-01-01)

(21) (22)

Application

2007100467/04, 2007-01-09

(24)

Start date

2007-01-09

(22)

Actual filing date

2007-01-09

(45)

Published

2009-01-20

(72)

Inventor

Mal'Tsev Leonid VeniaminovichTokinov Aleksej IvanovichBorejko Natal'Ja PavlovnaJafizova Valentina PetrovnaMukhamadeev Minnakhmat Salikhovich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

PREVENTIVE METHOD OF THERMOPOLYMERISATION INHIBITORS DEACTIVATION Russian patent published in 2009 - IPC C07C7/20 C07C11/16

Abstract RU 2344115 C2

FIELD: chemistry.

SUBSTANCE: invention refers to preventive method of thermopolymerisation inhibitors deactivation accompanying separation of C₄-hydrocarbon fractions containing sulphur compounds. Method is implemented through rectification with aqueous acetonitrile as extactant and implies that secondary amine is used as additive preventing polymerisation inhibitor deactivation. Application of this method provides linking and transformation of sulphurous compounds into persistive salts of dithiocarbamic acid.

EFFECT: prevention of catalyst deactivation.

2 cl, 1 tbl, 3 ex

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RU 2 344 115 C2

Authors

Mal'Tsev Leonid Veniaminovich

Tokinov Aleksej Ivanovich

Borejko Natal'Ja Pavlovna

Jafizova Valentina Petrovna

Mukhamadeev Minnakhmat Salikhovich

Dates

2009-01-20—Published

2007-01-09—Filed