- 专利标题： PROCESS FOR PREPARATION OF CYCLOHEXANEDICARBOXYLIC ACID
- 专利标题（中）： 用于生产环己烷
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申请号： EP92920769.4申请日： 1992-09-15
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公开(公告)号： EP0610248B1公开(公告)日： 1996-01-10
- 发明人: COOK, Steven, Leroy , IRICK, Gether, Jr. Route 11 , MOOREHOUSE, Crispen, Sydney
- 申请人： EASTMAN CHEMICAL COMPANY
- 申请人地址： 100 North Eastman Road Kingsport, TN 37660 US
- 专利权人： EASTMAN CHEMICAL COMPANY
- 当前专利权人： EASTMAN CHEMICAL COMPANY
- 当前专利权人地址： 100 North Eastman Road Kingsport, TN 37660 US
- 代理机构： Wibbelmann, Jobst, Dr.
- 优先权： US760680 19910916; US831124 19920204
- 国际公布： WO9306076 19930401
- 主分类号： C07C51/36
- IPC分类号： C07C51/36 ; C07C61/09
摘要：
A process for preparation of 1,3- or 1,4-cyclohexanedicarboxylic acid comprising: (A) preparing a solution comprised of the disodium salt of terephthalic acid or isophthalic acid and water, (B) continuously preparing the disodium salt of 1,3- or 1,4-cyclohexanedicarboxylic acid by continuously contacting the solution with hydrogen and the combination of ruthenium metal and a carbon support in a packed column, (C) preparing 1,3- or 1,4-cyclohexanedicarboxylic acid by contacting the disodium salt of 1,3- or 1,4-cyclohexanedicarboxylic acid with sulfuric acid or hydrochloric acid, and (D) recovering the 1,3- or 1,4-cyclohexanedicarboxylic acid by crystallization of the 1,3- or 1,4-cyclohexanedicarboxylic acid.
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