-
1.发明授权Catalyst and process for preparing low-viscosity and color-reduced polyisocyanates containing isocyanurate groups 失效用于制备含有异氰脲酸酯基团的低粘度和减色多异氰酸酯的催化剂和方法公开(公告)号：US06613863B2
公开(公告)日：2003-09-02
申请号：US10023901
申请日：2001-12-21
IPC分类号： C08G1816
CPC分类号： C08G18/791 , B01J31/0278 , B01J31/0279 , B01J31/0298 , B01J31/04 , B01J2231/341 , C07C211/63 , C07C217/58 , C08G18/092 , C08G18/1875
摘要： A low-viscosity polyisocyanate of reduced color, containing isocyanurate groups is prepared by partially trimerizing an aliphatic and/or cycloaliphatic diisocyanate in the presence of 0.02 to 2% by weight, based on the weight of the diisocyanate starting material, of at least one trimerization catalyst containing a quarternary amine component and then removing excess diisocyanate from the reaction medium.
摘要翻译： 通过在0.02至2重量％的二异氰酸酯原料的重量存在下将脂族和/或脂环族二异氰酸酯部分三聚的至少一种三聚化来制备含有异氰脲酸酯基团的低颜色的低粘度多异氰酸酯， 催化剂含有季胺组分，然后从反应介质中除去过量的二异氰酸酯。
-
2.发明授权Catalyst and process for preparing low-viscosity and color-reduced polyisocyanates containing isocyanurate groups 失效用于制备含有异氰脲酸酯基团的低粘度和减色多异氰酸酯的催化剂和方法公开(公告)号：US07001973B2
公开(公告)日：2006-02-21
申请号：US10396475
申请日：2003-03-26
IPC分类号： C08G18/16
CPC分类号： C08G18/791 , B01J31/0278 , B01J31/0279 , B01J31/0298 , B01J31/04 , B01J2231/341 , C07C211/63 , C07C217/58 , C08G18/092 , C08G18/1875
摘要： A low-viscosity polyisocyanate of reduced color, containing isocyanurate groups is prepared by partially trimerizing an aliphatic and/or cycloaliphatic diisocyanate in the presence of 0.02 to 2% weight, based on the weight of the diisocyanate starting material, of at least one trimerization catalyst containing a quarternary amine component and then removing excess diisocyanate from the reaction medium.
摘要翻译： 含有异氰脲酸酯基的低粘度多异氰酸酯通过将二异氰酸酯起始原料的重量计0.02至2％的至少一种三聚催化剂以脂肪族和/或脂环族二异氰酸酯部分三聚制备， 含有季胺组分，然后从反应介质中除去过量的二异氰酸酯。
-
搜索结果
2 条记录 (耗时 0.016 秒)
