Title:
ヒンダードフェノール性酸化防止剤組成物
Document Type and Number:
Japanese Patent JP5360852
Kind Code:
B2
Abstract:
Hindered tert-butylphenol antioxidant compositions characterized by a low level of volatile and undesirable single-ring tert-butylphenolic antioxidants and a high level of non-volatile multi-ring (or methylene bridged) tert-butylphenol antioxidants are obtained by reacting a specific mixture of ultra pure ortho-tert-butyiphenol (OTBP), ultra pure 2,6-di-tert-butylphenol (DTBP) and formaldehyde in a solvent in the presence of catalyst. These antioxidants are further characterized by having a low level of 2,6-di-tert-butylphenol, low levels of ortho-tert-butylphenol, and trace levels of 2,4,6-tri-tert-butylphenol.
Inventors:
Vincent The Gatto
Application Number:
JP2002072173A
Publication Date:
December 04, 2013
Filing Date:
March 15, 2002
Export Citation:
Assignee:
Albemarle Corporation
International Classes:
C09K15/08; C07C37/20; C07C39/15; C10L1/18; C10L1/183; C10L10/04; C10L10/08; C10M129/14; C10M161/00; C10N30/10; C10N70/00
Domestic Patent References:
| JP4227795A |
Foreign References:
| US2944086 |
Other References:
V.J.Gatto,Journal of Chromatography A,1999年,Volume 841,P45-54
Attorney, Agent or Firm:
Patent business corporation Odashima patent office