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(19)

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2 647 239

(13)

(51)

IPC

C07C67/08(2006-01-01)

C07C69/80(2006-01-01)

C08K5/12(2006-01-01)

(21) (22)

Application

2016104059, 2016-02-09

(24)

Start date

2016-02-09

(22)

Actual filing date

2016-02-09

(45)

Published

2018-03-14

(72)

Inventor

Amitin Aleksandr VulfovichPosenchuk Evgenij IvanovichKrylova Elena Konstantinovna

(73)

Holder

Ooo

METHOD OF CUBIC RESIDUE OF PHTHALIC ANHYDRIDE PRODUCTION PROCESSING Russian patent published in 2018 - IPC C07C67/08 C07C69/80 C08K5/12

Abstract RU 2647239 C2

FIELD: chemistry.

SUBSTANCE: invention relates to chemical technology, in particular, it relates to a method of the bottoms of phthalic anhydride production processing. Proposed method consists in evaporation of the bottom residue at a residual pressure of 6-38 kPa and a temperature of 240-300°C, reaction of the resulting vapors with 2-ethylhexanol followed by the reaction product processing into a commercial plasticizer-dioctyl phthalate.

EFFECT: this method allows you to get from the waste - the bottoms of phthalic anhydride production, the commercial plasticizer - dioctyl phthalate.

1 cl, 5 ex

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RU 2 647 239 C2

Authors

Amitin Aleksandr Vulfovich

Posenchuk Evgenij Ivanovich

Krylova Elena Konstantinovna

Dates

2018-03-14—Published

2016-02-09—Filed