| 发明名称 | Method for concentrating aqueous 3-hydroxy-2,2-dimethylpropanal solution | ||
| 摘要 | The present invention provides a method for concentrating an aqueous solution containing at least 3-hydroxy-2,2-dimethyl propanal and/or a dimer thereof, which includes subjecting a mixed solution of an aqueous solution containing at least 3-hydroxy-2,2-dimethyl propanal and/or a dimer thereof and an azeotropic agent to azeotropic distillation in a distillation column to distil off water and the azeotropic agent from the mixed solution, wherein the mixed solution is prepared by adding, as the azeotropic agent, at least one selected from the group consisting of 1-butanol, 2-butanol, 2-methyl-1-propanol, 1-pentanol and 1-hexanol to the aqueous solution. | ||
| 申请公布号 | US9061985(B2) | 申请公布日期 | 2015.06.23 |
| 申请号 | US201214002442 | 申请日期 | 2012.03.02 |
| 申请人 | MITSUBISHI GAS CHEMICAL COMPANY, INC. | 发明人 | Matsuura Yutaka;Kuzuhara Ikutaro;Yamane Masahiro |
| 分类号 | C07C45/84;C07D319/06 | 主分类号 | C07C45/84 |
| 代理机构 | Greenblum & Bernstein, P.L.C. | 代理人 | Greenblum & Bernstein, P.L.C. |
| 主权项 | 1. A method for concentrating an aqueous solution containing at least 3-hydroxy-2,2-dimethyl propanal and/or a dimer thereof, comprising subjecting a mixed solution of an aqueous solution containing at least 3-hydroxy-2,2-dimethyl propanal and/or a dimer thereof and an azeotropic agent to azeotropic distillation in a distillation column to distil off water and the azeotropic agent from the mixed solution, wherein the mixed solution is prepared by adding, as the azeotropic agent, at least one selected from the group consisting of 1-butanol, 2-butanol, 2-methyl-1-propanol, 1-pentanol and 1-hexanol to the aqueous solution. | ||
| 地址 | Tokyo JP | ||