METHODS FOR PRODUCING 2,6-DI-TERT-BUTYL-4-MERCAPTOPHENOL AND 4,4'-ISOPROPYLIDENEDITHIOBIS[2,6-DI-TERT-BUTYLPHENOL]

Title:

METHODS FOR PRODUCING 2,6-DI-TERT-BUTYL-4-MERCAPTOPHENOL AND 4,4'-ISOPROPYLIDENEDITHIOBIS[2,6-DI-TERT-BUTYLPHENOL]

Document Type and Number:

WIPO Patent Application WO/2006/082950

Kind Code:

A1

Abstract:

Disclosed is a method for producing 2,6-di-tert-butyl-4-mercaptophenol which comprises a step wherein bis(3,5-di-tert-butyl-4-hydroxyphenyl)polysulfide is reduced with zinc in a mixed solvent of toluene and an n-butanol. Also disclosed is a method for producing 4,4'-isopropylidinedithiobis[2,6-di-tert-butylphenol] using such a method.

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Inventors:

YOKOYAMA HIROAKI (JP)
YAMAMOTO TOMIAKI (JP)
INOUE HARUYUKI (JP)

Application Number:

PCT/JP2006/301934

Publication Date:

August 10, 2006

Filing Date:

January 31, 2006

Export Citation:

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Assignee:

SUMITOMO CHEMICAL CO (JP)
YOKOYAMA HIROAKI (JP)
YAMAMOTO TOMIAKI (JP)
INOUE HARUYUKI (JP)

International Classes:

C07C319/06; C07C323/20

Foreign References:

JP2004107294A

2004-04-08

Attorney, Agent or Firm:

Enomoto, Masayuki c/o Sumitomo Chemical (Intellectual Property Service Limited, 5-33, Kitahama 4-chome, Chuo-k, Osaka-shi Osaka 50, JP)

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