Title:
ヒドロキシアルキルヒンダードフェノール系酸化防止剤の製造方法
Document Type and Number:
Japanese Patent JP4536773
Kind Code:
B2
Abstract:
A method of making a hindered phenolic antioxidant is disclosed wherein the method comprises: reacting an ester of the formula: wherein R1, R2, and R3 are independently selected alkyl groups and n is 0, 1, or 2, with an aliphatic polyhydroxyl alcohol of the general formula R(OH)n wherein R is an aliphatic group of from 2 to about 12 carbon atoms and n is an integer of from 2 to 7, provided that one hydroxyl is primary and the others are secondary or tertiary, in the presence of a strong acid catalyst; then, neutralizing the strong acid catalyst with an overbased detergent; and isolating the hindered phenolic antioxidant after the neutralization step.
Inventors:
Balance key, John, Earl.
Application Number:
JP2007510759A
Publication Date:
September 01, 2010
Filing Date:
April 08, 2005
Export Citation:
Assignee:
Chemture Corporation
International Classes:
C07C67/03; C07C69/732; C09K15/08; C07B61/00
Domestic Patent References:
| JP8503993A | ||||
| JP48024001B1 |
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Katsunori Ando
Yukihiro Ikeda
Hajime Asamura
Katsunori Ando
Yukihiro Ikeda