发明授权
- 专利标题: Process for pure grade acrylic acid
- 专利标题(中): 纯级丙烯酸工艺
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申请号: US537368申请日: 1995-10-27
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公开(公告)号: US5759358A公开(公告)日: 1998-06-02
- 发明人: William Bauer, Jr. , Timothy Allen Hale , Robert Michael Mason , Rita Karina Upmacis , Lori Marie Petrovich
- 申请人: William Bauer, Jr. , Timothy Allen Hale , Robert Michael Mason , Rita Karina Upmacis , Lori Marie Petrovich
- 申请人地址: PA Philadelphia
- 专利权人: Rohm and Haas Company
- 当前专利权人: Rohm and Haas Company
- 当前专利权人地址: PA Philadelphia
- 主分类号: C07C57/04
- IPC分类号: C07C57/04 ; C07C51/44 ; C07C51/487 ; C07C51/50 ; C07C57/07 ; C07C57/075 ; B01D3/34 ; C07C51/42
摘要:
Processes are provided for producing a pure grade of acrylic acid having residual aldehyde levels under 10 parts per million. The processes apply selected groups of amines sequentially and, preferably, continuously in selectively reducing, for example, acrolein and furfural, and may be advantageously conducted in the presence of maleic acid and maleic anhydride impurities.
公开/授权文献
- US5044480A Fluid friction coupling 公开/授权日:1991-09-03