| 发明名称 | 1,4-butanediol-containing composition | ||
| 摘要 | A 1,4-butanediol (1,4BG)-containing composition having high thermal stability, and having a concentration of 1,4-butanediol of 99.00% by weight or more and not more than 99.99% by weight and 2-pyrrolidone or N-methylpyrrolidone in a concentration, as converted into a nitrogen atom, of from 1.0 to 25 ppm by weight. | ||
| 申请公布号 | US9434706(B2) | 申请公布日期 | 2016.09.06 |
| 申请号 | US201414150174 | 申请日期 | 2014.01.08 |
| 申请人 | MITSUBISHI CHEMICAL CORPORATION | 发明人 | Izawa Yusuke;Utsunomiya Masaru;Konishi Norikazu;Tanaka Kouta;Suzuki Takayuki;Matsuzono Shinichirou |
| 分类号 | C07C31/20;C07D307/08;C07C29/94;C08G63/183;C08G63/78;C07D307/02;C08K5/20 | 主分类号 | C07C31/20 |
| 代理机构 | Oblon, McClelland, Maier & Neustadt, L.L.P. | 代理人 | Oblon, McClelland, Maier & Neustadt, L.L.P. |
| 主权项 | 1. A 1,4-butanediol-containing composition having a concentration of 1,4-butanediol of 99.00% by weight or more and not more than 99.99% by weight and containing 2-pyrrolidone or N-methylpyrrolidone in a concentration, as converted into a nitrogen atom, of from 1.0 to 25 ppm by weight, wherein the 1,4-butanediol-containing composition is used to produce tetrahydrofuran. | ||
| 地址 | Chiyoda-ku JP | ||