Title:
PRODUCTION OF TETRAKIS(3-@(3754/24)3,5-DI-TERTIARY-BUTYL-4-HYDROXYPHENYL)PROPIONYLOXYMETHYL)METHANE
Document Type and Number:
Japanese Patent JP3215728
Kind Code:
B2
Abstract:
PURPOSE: To produce tetrakis [3-(3,5-di-tert.butyl-4-hydroxyphenyl) propionyloxymethyl]methane excellent in fluidity and having a β-crystal structure as large crystal particles reduced in occurrence of 'dust.
CONSTITUTION: This production of tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl) propionyloxymethyl]methane having a β crystal structure is characterized by using a mixed solvent containing 70-95wt.% lower alcohol, 1-20wt.% water and 0.5-10wt.% saturated aliphatic hydrocarbon solvent as a solvent in crystallizing.
Inventors:
Sugisaki Mamoru
Takumi Iio
Takashi Takeda
Ryozo Arata
Takumi Iio
Takashi Takeda
Ryozo Arata
Application Number:
JP30457492A
Publication Date:
October 09, 2001
Filing Date:
October 15, 1992
Export Citation:
Assignee:
Asahi Denka Kogyo Co., Ltd.
International Classes:
C07C67/52; C07C69/732; (IPC1-7): C07C67/52; C07C69/732
Domestic Patent References:
| JP62258343A | ||||
| JP272139A | ||||
| JP672960A | ||||
| JP249752A |
Attorney, Agent or Firm:
Yoshikazu Miura
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