发明名称 |
MULTISTEP, CONTINUOUS PREPARATION OF ORGANIC POLYISOCYANATES |
摘要 |
<p>A multistep process for the continuous preparation of organic polyisocyanates, preferably aliphatic or cycloaliphatic diisocyanates, by reacting the corresponding organic polyamines with carbonic acid derivatives and alcohols to give monomeric polyurethanes and pyrolyzing the latter involves separating the resultant polyisocyanates and worthless residues in certain reaction steps and recycling the reusable by-products into earlier steps.</p> |
申请公布号 |
CA2094484(C) |
申请公布日期 |
1997.10.07 |
申请号 |
CA19932094484 |
申请日期 |
1993.04.20 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
OTTERBACH, ANDREAS;SCHWARZ, HANS VOLKMAR;MERGER, FRANZ;MAGNUSSEN, PETER;SCHWARZ, WOLFGANG;BRANDT, ECKHARDT;MATTNER, OTTO |
分类号 |
C08G18/72;C07C263/00;C07C263/04;C07C263/20;C07C265/00;C07C265/04;C07C265/10;C07C265/14;C08G71/00;C08G71/04;(IPC1-7):C07C265/14 |
主分类号 |
C08G18/72 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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