The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 17, 2012
Filed:
Mar. 06, 2009
SE IN Yang, Suwon-si, KR;
Kyung Keun Yoo, Seoul, KR;
Yong IL Kim, Incheon, KR;
Tae Hee Shin, Seoul, KR;
Deok Yun Kim, Seongnam-si, KR;
Sun Ki Seo, Iksan-si, KR;
Rae Sung Chung, Iksan-si, KR;
DO Sun Baik, Iksan-si, KR;
Se In Yang, Suwon-si, KR;
Kyung Keun Yoo, Seoul, KR;
Yong Il Kim, Incheon, KR;
Tae Hee Shin, Seoul, KR;
Deok Yun Kim, Seongnam-si, KR;
Sun Ki Seo, Iksan-si, KR;
Rae Sung Chung, Iksan-si, KR;
Do Sun Baik, Iksan-si, KR;
OCI Company Ltd., Seoul, KR;
Abstract
The present invention relates to a method for the preparation of hydrogen peroxide through a continuous process, extracting hydrogen peroxide produced from reduction and oxidation of a working solution and recycling the oxidized working solution back to the reduction process, wherein the composition of the working solution, i.e. the composition of 2-alkylanthraquinone and 2-tetrahydroalkylanthraquinone, is optimized to increase the solubility of the quinones and to improve the reaction rate. The working solution comprises 2-alkylanthraquinone, 2-tetrahydroalkylanthraquinone and an organic solvent, wherein 65-95 mol % of the alkyl group of 2-alkylanthraquinone and 2-tetrahydroalkylanthraquinone is amyl and the remaining 5-35 mol % of the alkyl group is ethyl, and the molar ratio of 2-alkylanthraquinone to 2-tetrahydroalkylanthraquinone is from 4:6 to 1:9.