发明授权
- 专利标题： Method for reducing the chlorine content of low molecular weight isocyanates
- 专利标题（中）： 降低低分子量异氰酸酯的氯含量的方法
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申请号： US09532584申请日： 2000-03-22
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公开(公告)号： US06391161B1公开(公告)日： 2002-05-21
- 发明人: Karsten Danielmeier , Dieter Mager , Reinhard Halpaap , Martin Brahm , Eric Hoffman
- 申请人： Karsten Danielmeier , Dieter Mager , Reinhard Halpaap , Martin Brahm , Eric Hoffman
- 优先权： DE19914291 19990330
- 主分类号： B01D334
- IPC分类号： B01D334
摘要：
An organic isocyanate or mixture of isocyanates is treated with at least one high molecular weight ester of phosphoric acid corresponding to a specified formula to remove chlorine compounds. The isocyanates which are purified in this manner are useful for the production of coatings, polyurethane moldings and chemical intermediates.
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