| Original document(31 pages) 中文版 |
The invention relates to a method for synthesis of aliphatic isocyanates from aromatic isocyanates in substantially 3 stages. In particular, the invention relates to a method for synthesis of bis{4-isocyanatocyclohexyl}methane (H12MDI) from bis{4-isocyanatophenyl}methane (MDI). More especially, the invention relates to a method for synthesis of H12MDI with a trans-trans isomer content of <30%, preferably of <20%, particularly preferably of 5 to 15%. |
Application Number
申请号 |
200310116156 |
Application Date
申请日 |
2003.11.17 |
| Title 名称 |
Method for synthesis of aliphatic isocyanates from aromatic isocyanates |
Publication Number
公开号 |
1500776 |
Publication Date
公开日 |
2004.06.02 |
| Approval Pub. Date |
|
Granted Pub. Date |
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| International Classification 分类号 |
C07C263/16,C07C265/04 |
Applicant(s) Name
申请人 |
Degussa |
| Address 地址 |
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| Inventor(s) Name 发明人 |
Finke Norbert, Stochniol Guido, Kohlstruck Stephan, Kreczinski Manfred, Lettmann Christian, Lomoelder Rainer |
| Attorney & Agent 代理人 |
zhang yuanzhong ma chongde |
| More information 更 多 信 息 |
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