公开(公告)号：US5728317A

公开(公告)日：1998-03-17

申请号：US647877

申请日：1996-05-13

申请人： Gerhard Laqua ,  Franz Merger ,  Tom Witzel ,  Ursula Siebenhaar ,  David Agar

发明人： Gerhard Laqua ,  Franz Merger ,  Tom Witzel ,  Ursula Siebenhaar ,  David Agar

IPC分类号： C07C263/18 ,  C07C265/14 ,  C08G18/73 ,  C08G18/75 ,  C08G18/79 ,  C08K5/00 ,  C09K3/00 ,  C07C249/00 ,  C07C251/00 ,  C07C257/00

CPC分类号： C08G18/792 ,  C07C263/18 ,  C07C265/14 ,  C08G18/022 ,  C08G18/092 ,  C08G18/73 ,  C08G18/75 ,  C08K5/005 ,  C07C2101/14

摘要： (Cyclo)aliphatic polyisocyanate compositions which have a long shelf life, are obtainable by phosgene-free methods, preferably by thermal cleavage of (cyclo)aliphatic polycarbamates, and, for stabilization, contain at least one primary stabilizer (2a), preferably a sterically hindered phenol and/or an aromatic amine, or at least one secondary stabilizer (2b), preferably an organic phosphite and/or a thioether, or at least one acidic stabilizer (2c), preferably a carboxylic acid, an acyl chloride, an inorganic acid, an inorganic acid chloride and/or a diester of phosphoric acid, or a stabilizer system comprising at least 2 of the stabilizers (2a) to (2c), a process for the preparation of the (cyclo)aliphatic polyisocyanate compositions and their preferred use for the preparation of isocyanurate-containing polyisocyanates.

摘要翻译： 具有长保质期的（Cyclo）脂族多异氰酸酯组合物可通过无光气的方法获得，优选通过（环）脂族聚氨基甲酸酯的热裂解获得，并且为了稳定，含有至少一种主要稳定剂（2a），优选为空间 受阻酚和/或芳族胺，或至少一种仲级稳定剂（2b），优选有机亚磷酸酯和/或硫醚，或至少一种酸性稳定剂（2c），优选羧酸，酰氯，无机 酸，无机酰氯和/或磷酸二酯，或包含至少2种稳定剂（2a）至（2c）的稳定剂体系，制备（环）脂族多异氰酸酯组合物及其优选的 用于制备含异氰脲酸酯的多异氰酸酯。

公开(公告)号：US20050203325A1

公开(公告)日：2005-09-15

申请号：US10518449

申请日：2003-06-27

申请人： Thomas Heidemann ,  Ursula Siebenhaar

发明人： Thomas Heidemann ,  Ursula Siebenhaar

IPC分类号： C07C2/08 ,  C07C2/02

CPC分类号： C07C2/08 ,  C07C2523/755 ,  C07C2527/02

摘要： Process for oligomerizing an alkene stream over a solid catalyst comprising sulfur and nickel, in which the oligomerization is carried out in two or more successive catalyst zones and the molar ratio of sulfur to nickel in the first catalyst zone is less than 0.5 and that in the last catalyst zone is 0.5 or more and, in the case of further catalyst zones between the first and last catalyst zones, the molar ratio of sulfur to nickel in each catalyst zone is not less than that in the immediately preceding catalyst zone, based on the main flow direction of the feed stream.

摘要翻译： 在包含硫和镍的固体催化剂上使烯烃流低聚的方法，其中低聚反应在两个或更多个连续催化剂区域中进行，并且第一催化剂区域中硫与镍的摩尔比小于0.5，而在 最后的催化剂区域为0.5以上，在第一催化剂区域和最后一个催化剂区域之间的另外的催化剂区域的情况下，各催化剂区域中的硫与镍的摩尔比不小于紧接在前一个催化剂区域的摩尔比，基于 进料流的主流向。

公开(公告)号：US07291759B2

公开(公告)日：2007-11-06

申请号：US10518449

申请日：2003-06-27

申请人： Thomas Heidemann ,  Ursula Siebenhaar

发明人： Thomas Heidemann ,  Ursula Siebenhaar

IPC分类号： C07C2/02

CPC分类号： C07C2/08 ,  C07C2523/755 ,  C07C2527/02

摘要： Process for oligomerizing an alkene stream over a solid catalyst comprising sulfur and nickel, in which the oligomerization is carried out in two or more successive catalyst zones and the molar ratio of sulfur to nickel in the first catalyst zone is less than 0.5 and that in the last catalyst zone is 0.5 or more and, in the case of further catalyst zones between the first and last catalyst zones, the molar ratio of sulfur to nickel in each catalyst zone is not less than that in the immediately preceding catalyst zone, based on the main flow direction of the feed stream.

摘要翻译： 在包含硫和镍的固体催化剂上使烯烃流低聚的方法，其中低聚反应在两个或更多个连续的催化剂区域中进行，并且第一催化剂区域中硫与镍的摩尔比小于0.5，而在 最后的催化剂区域为0.5以上，在第一催化剂区域和最后一个催化剂区域之间的另外的催化剂区域的情况下，各催化剂区域中的硫与镍的摩尔比不小于紧接在前一个催化剂区域的摩尔比，基于 进料流的主流向。