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2 007 382

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C1

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IPC

(21) (22)

Application

5008384/04, 1991-08-09

(22)

Actual filing date

1991-08-09

(45)

Published

1994-02-15

(72)

Inventor

Sivenkov E.A.Kobjakova N.K.Fomin V.A.

(73)

Holder

Gosudarstvennyj Nauchno-Issledovatel'Skij Institut Khimii I Tekhnologii Polimerov Im.Akad.V.A.Kargina S Opytnym Zavodom

METHOD OF METHACRYLIC ACID SYNTHESIS Russian patent published in 1994 - IPC

Abstract RU 2007382 C1

FIELD: organic chemistry. SUBSTANCE: product - methacrylic acid, gross-formula is C4H6C2, content of basic substance is 99,6% , yield is 95,2% . Reagent 1: acetone cyanohydrin. Reagent 2: acetic anhydride. Reaction conditions: at 180-250 C, in the medium of carboxylic acid, in the presence of catalyst - ammonium bisulfate or Lewis acid, at mole ratio of acetone cyanohydrin: carboxylic acid: acetic anhydride: catalyst = 1: (10-20): (0,5-1,2): (0,5-1), respectively. EFFECT: enhanced yield of product. 2 cl

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RU 2 007 382 C1

Authors

Sivenkov E.A.

Kobjakova N.K.

Fomin V.A.

Dates

1994-02-15—Published

1991-08-09—Filed

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