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Application

4799602/04, 1989-12-26

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Actual filing date

1989-12-26

(45)

Published

1994-10-15

(72)

Inventor

Alejnikov S.F.Kukushkin A.M.Kalinin V.I.Cherepanov S.I.Bol'Shova I.V.Loskutov L.G.Ovchinnikov V.M.Gur'Janov V.E.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Nauchno-Issledovatel'Skij Tsentr S Opytnym Zavodom

METHOD OF SYNTHESIS OF ALIPHATIC CARBOXYLIC ACID ALKYLKETENE DIMMERS C-C Russian patent published in 1994 - IPC

Abstract RU 2021266 C1

FIELD: chemical technology. SUBSTANCE: synthesis is carried out continuously from chloroanhydride of corresponding aliphatic acid and trialkylamine at their molar ratio (1.04-1.7):1 in the medium of anhydrous organic solvent at 65-90 C in pulsatory column at pulsation intensity 600-2000 mm/min. The following separation of amine hydrochloride is carried out by treatment of reaction mixture with aqueous solution containing 1.5-2% HCl, or 1.5-20% hydroxyethylidenediphosphonic acid, or their mixture. Yield is 91-98.2%, content of basic substance is 90.2-96.6%, process time is shortened by 10 times. Product is used in paper and pulp industry. EFFECT: increased yield of product, diminished time of process. 1 tbl

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RU 2 021 266 C1

Authors

Alejnikov S.F.

Kukushkin A.M.

Kalinin V.I.

Cherepanov S.I.

Bol'Shova I.V.

Loskutov L.G.

Ovchinnikov V.M.

Gur'Janov V.E.

Dates

1994-10-15—Published

1989-12-26—Filed

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