Polymerization catalyst and process for polymerizing alpha-olefins
申请人:PHILLIPS PETROLEUM COMPANY
公开号:EP0012397A1
公开(公告)日:1980-06-25
Alpha-olefins are polymerized employing a catalyst which forms on mixing a catalyst component A formed by milling together a magnesium halide or manganous halide with selected catalyst adjuvants followed by treatment of the resulting milled product with a halogenated tetravalent titanium compound and combining the product thus formed with a cocatalyst component B comprising at least one of an organoaluminum compound and an organoaluminum monohalide with or without an aromatic ester as a part of the cocatalyst system.
α-烯烃采用一种催化剂进行聚合,这种催化剂是通过将卤化镁或卤化锰与选定的催化剂辅助剂混合研磨形成催化剂组分 A,然后用卤代四价钛化合物对研磨产物进行处理,并将由此形成的产物与由有机铝化合物和有机铝单卤化物中的至少一种组成的助催化剂组分 B 相结合而形成的,助催化剂体系中可以有芳香族酯,也可以没有芳香族酯。
Extraction of phenols from aqueous solutions
申请人:AMERICAN CYANAMID COMPANY
公开号:EP0105161A1
公开(公告)日:1984-04-11
A process for the extraction of phenolic compounds from aqueous solutions is disclosed. The process comprises contacting said aqueous solution with an organic solution comprising at least one tertiary phosphine oxide and a high boiling organic solvent
Liquid phosphine oxide systems for solvent extraction
申请人:CYANAMID CANADA INC.
公开号:EP0132700A1
公开(公告)日:1985-02-13
A process for the removal of difficult-to-remove acidic organic compounds from aqueous solutions using novel phosphine oxide mixtures in which mixtures 1) at least two phosphine oxides are present, the total number of carbon atoms in a first oxide being at least 15 and the difference in the total number of carbon atoms in the first and second oxides being present in an amount of at least 5% by weight and not more than 60% by weight or 2) at least four phosphine oxides are present, the total number of carbon atoms in an oxide having the lowest no. of C atoms being at least 15, said phosphine oxides being present in an amount of at least 1% by weight and not more than 60% by weight. Unexpectedly high extractability is achieved using the mixtures.