发明授权
- 专利标题： Decoloration and color stabilization of TEDA solution
- 专利标题（中）： TEDA溶液的脱色和颜色稳定
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申请号： US10765988申请日： 2004-01-29
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公开(公告)号： US07074926B2公开(公告)日： 2006-07-11
- 发明人: Jürgen Ciprian , Matthias Frauenkron , Stephan Maurer , Johann-Peter Melder
- 申请人： Jürgen Ciprian , Matthias Frauenkron , Stephan Maurer , Johann-Peter Melder
- 申请人地址： DE Ludwigshafen
- 专利权人： BASF Aktiengesellschaft
- 当前专利权人： BASF Aktiengesellschaft
- 当前专利权人地址： DE Ludwigshafen
- 代理机构： Novak Druce Deluca & Quigg
- 优先权： DE10303696 20030130
- 主分类号： C07D487/00
- IPC分类号： C07D487/00
摘要：
The present invention relates to a process for preparing TEDA solutions comprising a solvent selected from the group consisting of polyhydric alcohols and ethers of polyhydric alcohols. The process comprises passing gaseous TEDA into the solvent and subsequently treating the solutions with one or more suitable adsorbents. This gives solutions which have only low color numbers and are color-stable on storage. The solutions can be used as such in preferred applications of TEDA, preferably polyurethane production.
公开/授权文献
- US20040186291A1 Decoloration and color stabilization of TEDA solution 公开/授权日：2004-09-23
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