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2 039 738

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C1

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IPC

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Application

93045148/04, 1993-09-22

(22)

Actual filing date

1993-09-22

(45)

Published

1995-07-20

(72)

Inventor

Nijazov N.A.Pantukh B.I.Voronina O.A.

(73)

Holder

Sterlitamakskij Neftekhimicheskij Zavod

MONO-3- (3,5-DI-TERT-BUTYLPHENYL) -THIOPROPIONATE -2,2-METHYLENE- -BIS- (6-TERT-BUTYL-4-METHYLPHENOL) AS STABILIZING AGENT FOR RUBBER СКИ-3 Russian patent published in 1995 - IPC

Abstract RU 2039738 C1

FIELD: organic chemistry. SUBSTANCE: product: mono-3- (3,5-di-tert.-butylphenyl) -thiopropionate-2,2-methylene -bis- (6-tert.-butyl-4-methylphenol), empirical formula is C40H56O4S, yield is 98.7% purity is 99% Reagent 1: 4-mercapto-2,6-di-tert. -butylphenol. Reagent 2: 2,2′-methylene-bis-(6-tert. -butyl-4-methylphenol). Reaction conditions: in the presence of potassium fluoride as catalyst, at 10-50 C, in acetonitrile medium, at molar ratio mercaptophenol/acrylate/catalyst 1:(1-1.2):(0.01-0.14). EFFECT: increased effectiveness of agent. 3 tbl

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RU 2 039 738 C1

Authors

Nijazov N.A.

Pantukh B.I.

Voronina O.A.

Dates

1995-07-20—Published

1993-09-22—Filed

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