Title:
WASTEWATER ZERO DISCHARGE PROCESS FOR PREPARING EPOXYPHENYLETHANE
Document Type and Number:
WIPO Patent Application WO/2012/000334
Kind Code:
A1
Abstract:
Disclosed is a wastewater zero discharge process for preparing epoxyphenylethane, which comprises: 1) bromo-alcoholizing styrene in the presence of an aqueous solution of a bromide salt, an acid and an oxidant at the temperature of -15～150℃, standing, and obtaining Wastewater Ⅰ and Oil Layer Ⅰ; 2) saponifying the Oil Layer Ⅰ by adding an alkali solution, separating the mixture to obtain Oil Layer Ⅱ containing epoxyphenylethane and Wastewater Ⅱ, and rectifying the Oil Layer Ⅱ to obtain finished epoxyphenylethane product; 3) modulating the concentration of the Wastewater Ⅱ mostly containing the bromide salt to 5～50％ by adding the bromide salt, and then reusing it in the bromo-alcoholization of the first step; separating salts from the Wastewater Ⅰ; and reusing the remaining wastewater to formulate the solutions used in the bromo-alcoholization. The oxidant used in step 1) is one or more oxidants, or their solution, which satisfy the following conditions: the oxidation product is water, or salt or organic matter which is easy to remove.
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Inventors:
ZHANG BINSHAN (CN)
BAI RUIGANG (CN)
LIU WENGE (CN)
LI WENXIANG (CN)
ZHANG LIANHAI (CN)
BAI RUIGANG (CN)
LIU WENGE (CN)
LI WENXIANG (CN)
ZHANG LIANHAI (CN)
Application Number:
PCT/CN2011/072166
Publication Date:
January 05, 2012
Filing Date:
March 25, 2011
Export Citation:
Assignee:
SHANDONG YINGYANG FLAVORS & FRAGRANCES CO LTD (CN)
ZHANG BINSHAN (CN)
BAI RUIGANG (CN)
LIU WENGE (CN)
LI WENXIANG (CN)
ZHANG LIANHAI (CN)
ZHANG BINSHAN (CN)
BAI RUIGANG (CN)
LIU WENGE (CN)
LI WENXIANG (CN)
ZHANG LIANHAI (CN)
International Classes:
C07D303/04; C07D301/26
Foreign References:
| CN101463020A | 2009-06-24 | |||
| US3806467A | 1974-04-23 | |||
| US20050065355A1 | 2005-03-24 |
Other References:
ZHU, ZHIANG: "Application of waste hydrobromic acid in the synthesis of epoxyphenylethane", HUAXUE SHIJIE, vol. 24, no. 1, 1983, pages 20
XIE, GAOYANG ET AL.: "Sodium perborate oxidations of cyclic and acrylic alkenes to oxiranes or vicinal acetoxy alcohols", TETRAHEDRON LETTERS, vol. 29, no. 24, 1988, pages 2967 - 2968
ANDO, TAKASHI ET AL.: "''Sodium percarbonate'' (SPC) as a hydrogen peroxide source for I organic synthesis", CHEMISTRY LETTERS, vol. 5, 1986, pages 665 - 666
PHILIP C. BULMAN ET AL.: "Enantioselective organocatalytic epoxidation driven by electrochemically generated percarbonate and persulfate", ADVANCED SYNTHESIS & CATALYSIS, vol. 350, no. 7-8, 2008, pages 1149 - 1154
XIE, GAOYANG ET AL.: "Sodium perborate oxidations of cyclic and acrylic alkenes to oxiranes or vicinal acetoxy alcohols", TETRAHEDRON LETTERS, vol. 29, no. 24, 1988, pages 2967 - 2968
ANDO, TAKASHI ET AL.: "''Sodium percarbonate'' (SPC) as a hydrogen peroxide source for I organic synthesis", CHEMISTRY LETTERS, vol. 5, 1986, pages 665 - 666
PHILIP C. BULMAN ET AL.: "Enantioselective organocatalytic epoxidation driven by electrochemically generated percarbonate and persulfate", ADVANCED SYNTHESIS & CATALYSIS, vol. 350, no. 7-8, 2008, pages 1149 - 1154
Attorney, Agent or Firm:
TIANJIN JIAMENG INTETTECTUAL PROPERTY AGENT CO., LTD (CN)
天津佳盟知识产权代理有限公司 (CN)
天津佳盟知识产权代理有限公司 (CN)
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