发明授权
- 专利标题： Process for the production of glycollic acid esters
- 专利标题（中）： 用于生产乙醇酸酯的方法
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申请号： US340033申请日： 1982-01-18
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公开(公告)号： US4409395A公开(公告)日： 1983-10-11
- 发明人: Haruhiko Miyazaki , Koichi Hirai , Taizo Uda , Yasuo Nakamura , Harumi Ikezawa , Takanori Tsuchie
- 申请人： Haruhiko Miyazaki , Koichi Hirai , Taizo Uda , Yasuo Nakamura , Harumi Ikezawa , Takanori Tsuchie
- 申请人地址： JPX Yanaguchi
- 专利权人： UBE Industries, Ltd.
- 当前专利权人： UBE Industries, Ltd.
- 当前专利权人地址： JPX Yanaguchi
- 优先权： JPX56-9064 19810126
- 主分类号： B01J23/00
- IPC分类号： B01J23/00 ; C07B61/00 ; C07C67/32 ; C07C69/675 ; C07C69/66
摘要：
In a process for producing a glycollic acid ester by the vapor phase catalytic hydrogenation of an oxalic acid diester in the presence of a catalyst and hydrogen gas, the improvement wherein the oxalic acid diester in the vaporous state is contacted with hydrogen gas in the presence of a catalyst composed of Ag or Pd supported on a solid carrier at a temperature of from about 120.degree. C. to about 300.degree. C.
公开/授权文献
- US4913839A Ferroelectric liquid crystal polymer 公开/授权日：1990-04-03
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