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2 415 873

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(51)

IPC

C08C19/12(2006-01-01)

C08C19/14(2006-01-01)

C08F8/22(2006-01-01)

C08F6/00(2006-01-01)

(21) (22)

Application

2009141044/05, 2009-11-05

(24)

Start date

2009-11-05

(22)

Actual filing date

2009-11-05

(45)

Published

2011-04-10

(72)

Inventor

Orlov Jurij NikolaevichAbramova Natal'Ja Vasil'EvnaGrigoruk Zhanna Gennad'EvnaIljushkina Nadezhda Nikolaevna

(73)

Holder

Zakrytoe Aktsionernoe Obshchestvo Kholding"

METHOD OF PRODUCING BROMOBUTYL RUBBER Russian patent published in 2011 - IPC C08C19/12 C08C19/14 C08F8/22 C08F6/00

Abstract RU 2415873 C1

FIELD: chemistry.

SUBSTANCE: bromobutyl rubber is used in petrochemical industry by treating butyl rubber with bromine in a hydrocarbon solvent, where the said bromine is released in the reaction zone during reaction of aqueous sodium bromide solution with an oxidising agent. The oxidising agent is sodium hypochlorite. The process is carried out in the presence of an aqueous solution of a mineral acid. Further, the bromated rubber polymerisation product undergoes neutralisation. The water is degassed and the bromobutyl rubber is dried. The oxidising agent is added in one or two steps. Neutralisation is carried out with aqueous sodium sulphite solution and an alkali.

EFFECT: merging bromine and bromated rubber formation steps.

4 cl, 2 tbl, 4 ex

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RU 2 415 873 C1

Authors

Orlov Jurij Nikolaevich

Abramova Natal'Ja Vasil'Evna

Grigoruk Zhanna Gennad'Evna

Iljushkina Nadezhda Nikolaevna

Dates

2011-04-10—Published

2009-11-05—Filed