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1. 发明授权

US3976622A Process for the production of polyisocyanates with a biuret structure 失效
标题翻译：用于制备具有缩二脲结构的多异氰酸酯的方法
公开(公告)号：US3976622A
公开(公告)日：1976-08-24
申请号：US578557
申请日：1975-05-19
申请人： Kuno Wagner , Johannes Eimer , Joachim Zirner , Rainer Raab , Dietrich Liebsch
发明人： Kuno Wagner , Johannes Eimer , Joachim Zirner , Rainer Raab , Dietrich Liebsch
IPC分类号： C07C273/18 , C07C275/62 , C08G18/78 , C08G18/79
CPC分类号： C07C273/1863 , C07C273/1872 , C08G18/7831
摘要： Comparatively low viscosity biuret containing polyisocyanates are produced by reacting diisocyanates and biuretizing agents in proportions corresponding to a molar ratio of diisocyanate to monofunctional biuretizing agent of at least 11 : 1.
摘要翻译：含有多异氰酸酯的比较低粘度的缩二脲通过使二异氰酸酯和缩二脲化剂以与二异氰酸酯与单官能缩二脲化合物的摩尔比为至少11:1的比例反应来制备。

2. 发明授权

US4255569A Process for the production of isocyanurate polyisocyanates, and products by the process 失效
标题翻译：生产异氰脲酸酯多异氰酸酯的方法，以及该方法的产品
公开(公告)号：US4255569A
公开(公告)日：1981-03-10
申请号：US36128
申请日：1979-05-04
申请人： Hans-Jurgen Muller , Rudolf Hombach , Manfred Dollhausen , Joachim Zirner
发明人： Hans-Jurgen Muller , Rudolf Hombach , Manfred Dollhausen , Joachim Zirner
IPC分类号： C07D251/34 , C08G18/79 , C09J121/00 , C09J175/00
CPC分类号： C09J121/00 , C08G18/791 , C08K5/29 , C09J175/00
摘要： The instant invention is directed to a process for the production of isocyanate polyisocyanates containing at least 50%, by weight, of tris-isocyanatomonoisocyanurates and at most 3%, by weight, of isocyanurate-free diisocyanate. The process comprises catalytically trimerizing the organic diisocyanates free from isocyanurate groups and terminating the trimerization reaction by deactivation of the catalyst after 5 to 40% of the isocyanate groups of the isocyanurate-free diisocyanate have been trimerized. The unreacted isocyanurate-free diisocyanate is then distilled off in the presence of from 1 to 30%, by weight, based on the end product obtained as distillation residue, of an inert liquid distillation aid which boils at a temperature at least 50.degree. C. above the boiling point of the isocyanurate-free diisocyanate.The invention is also directed to the products produced by this process.
摘要翻译：本发明涉及一种生产异氰酸酯多异氰酸酯的方法，所述异氰酸酯多异氰酸酯含有至少50重量％的三异氰酸酯异氰脲酸酯和至多3重量％的不含异氰脲酸酯的二异氰酸酯。该方法包括将无异氰酸酯基团的有机二异氰酸酯催化三聚化，并且在异氰脲酸酯二异氰酸酯的异氰酸酯基团的5至40％已经三聚化之后，通过催化剂的失活来终止三聚反应。然后在基于作为蒸馏残渣得到的最终产物的1至30重量％存在下，将惰性液体蒸馏助剂在至少50℃的温度下沸腾，然后蒸馏除去未反应的不含异氰脲酸酯的二异氰酸酯。高于不含异氰脲酸酯的二异氰酸酯的沸点。本发明还涉及通过该方法生产的产品。

3. 发明授权

US4115373A Process for the production of polyisocyanates containing isocyanurate groups 失效
标题翻译：制备含有异氰脲酸酯基团的多异氰酸酯的方法
公开(公告)号：US4115373A
公开(公告)日：1978-09-19
申请号：US737747
申请日：1976-11-01
申请人： Gerhard Henes , Hans Jurgen Muller , Pramod Gupta , Joachim Zirner
发明人： Gerhard Henes , Hans Jurgen Muller , Pramod Gupta , Joachim Zirner
IPC分类号： C08G18/00 , C07D251/34 , C08G18/79 , C07D251/12 , C08G18/18 , C08G18/77 , C08G18/82
CPC分类号： C07D251/34 , C08G18/791
摘要： This invention relates to a new process for the production, in inert organic solvents, of physiologically compatible polyisocyanates containing isocyanurate groups which have a monomeric diisocyanate content, based on solids, of at most 0.7%, by weight. The process uses Mannich bases as the trimerizing catalyst at temperatures below 60.degree. C and the reaction is terminated at the desired degree of trimerization by thermally decomposing the catalyst or by deactivating with a catalyst poison.
摘要翻译：本发明涉及在惰性有机溶剂中生产含有异氰酸酯基团的生理上相容的多异氰酸酯的新方法，所述异氰脲酸酯基团具有至多0.7重量％的基于固体的单体二异氰酸酯含量。该方法在低于60℃的温度下使用曼尼希碱作为三聚催化剂，并通过热分解催化剂或通过催化剂毒物失活将反应终止于期望的三聚度。

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