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Title:
ANTIOXIDANT 1076 SYNTHESIZING PROCESS
Document Type and Number:
WIPO Patent Application WO/2019/174360
Kind Code:
A1
Abstract:
Provided in the present invention is a method for organically synthesizing antioxidant 1076, which is 3(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecanol propionate. The preparation method comprises the following steps: with a mixture of ethylene glycol and toluene serving as a solvent, and with 3-(3,5-di-tert-butyl-4-hydroxyphenyl)methyl propionate and octadecanol serving as reactants, a catalyst is added for a reaction to produce 3(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecanol propionate. In the present invention, the mixture serves as the solvent and the catalyst is added in batches during the reaction process, the amount of the catalyst used is small in the reaction provided in the present invention for preparing 3(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecanol propionate, the reaction temperature is low, the purity of the product produced is high, and the yield of the organic synthesis method is kept as high as 92% or more during pilot tests.

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Inventors:
GUO JIAOYANG (CN)
Application Number:
PCT/CN2018/124803
Publication Date:
September 19, 2019
Filing Date:
December 28, 2018
Export Citation:
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Assignee:
JIANGSU JIYI NEW MAT CO LTD (CN)
International Classes:
C07C67/03; C07C69/732
Foreign References:
CN105348103A2016-02-24
US5081280A1992-01-14
Other References:
LIU, TAO: "P- (3, 5- (Study on the Preparation of Octadecyl beta-(3, 5-di-tert-butyl-4-hydroxyphenyl) Propionate", CHINESE MASTER S THESES FULL-TEXT DATABASE, 15 April 2014 (2014-04-15), pages 22 - 24 ; 27-30 ; 47-50, ISSN: 1674-0246
LIU, TAO: "beta-(3, 5- (Study . on the Preparation of Octadecyl (3-(3, 5-di-tert-butyl-4-hydroxyphenyl) Propionate", CHINESE MASTER S THESES FULL-TEXT DATABASE , ENGINEERING SCIENCE & TECHNOLOGY 1., 15 April 2014 (2014-04-15), pages 22 - 24 ; 27-30 ; 47-50, ISSN: 1674-0246
Attorney, Agent or Firm:
NANJING ZONGHENG INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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