公开(公告)号：US4296001A

公开(公告)日：1981-10-20

申请号：US118838

申请日：1980-02-06

申请人： Gil R. Hawley

发明人： Gil R. Hawley

IPC分类号： C08F4/00 ,  C08F4/06 ,  C08F4/24 ,  C08F10/00 ,  B01J21/06 ,  B01J23/26

CPC分类号： C08F10/00

摘要： In accordance with a first embodiment of this invention, a silica xerogel is aqueously impregnated with a titanium compound which is resistant to hydrolysis. In accordance with a second embodiment of this invention, a silica hydrogel containing a titanium compound resistant to hydrolysis is dried. In this embodiment, the hydrogel preferably also contains a pore preserving agent. This invention makes possible the use of aqueous impregnation of titanium and conventional drying techniques to give a catalyst having characteristics associated with azeotrope dried silica-titanium coprecipitated catalyst. The catalysts of this invention are useful in olefin polymerization processes, particularly in the polymerization of predominantly ethylene monomer systems under slurry conditions.

摘要翻译： 根据本发明的第一个实施方案，二氧化硅干凝胶用耐水解的钛化合物浸渍浸渍。 根据本发明的第二实施方案，将含有抗水解性的钛化合物的二氧化硅水凝胶干燥。 在该实施方案中，水凝胶优选还含有孔保护剂。 本发明可以使用钛的含水浸渍和常规干燥技术来制备具有与共沸干燥的二氧化硅 - 钛共沉淀催化剂相关的特性的催化剂。 本发明的催化剂可用于烯烃聚合方法，特别是在浆料条件下主要是乙烯单体体系的聚合。