发明授权
US06465596B1 Linear oligourethanes and polyurethanes having a defined structure, their preparation and their use
失效
具有限定结构的线性低聚氨酯和聚氨酯，其制备及其用途
- 专利标题： Linear oligourethanes and polyurethanes having a defined structure, their preparation and their use
- 专利标题（中）： 具有限定结构的线性低聚氨酯和聚氨酯，其制备及其用途
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申请号： US09566363申请日： 2000-05-08
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公开(公告)号： US06465596B1公开(公告)日： 2002-10-15
- 发明人: Bernd Bruchmann , Thomas Servay , Ulrich Treuling
- 申请人： Bernd Bruchmann , Thomas Servay , Ulrich Treuling
- 优先权： DE19921412 19990508
- 主分类号： C08G1800
- IPC分类号： C08G1800
摘要：
In a process for preparing linear oligourethanes and polyurethanes by reacting 1 mole of a) diisocyanate with 1 mole of b) a compound having two groups which are reactive toward isocyanates, the functional groups of a) and/or b) have differing reactivities toward the functional groups of the other reactant and the reaction conditions are selected so that in each case only particular functional groups of a) and b) react with one another.
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