SUPPORTED NON-METALLOCENE OLEFIN POLYMERIZATION CATALYST, AND PREPARATION AND USE THEREOF
申请人:Yangzi Petrochemical Company Co., Ltd.
公开号:EP1829897B1
公开(公告)日:2014-12-10
Supported Nonmetallocene Olefin Polymerization Catalyst, Preparation Method and Use Thereof
申请人:Dai Houliang
公开号:US20080227936A1
公开(公告)日:2008-09-18
The present invention provides a method for supporting a nonmetallocene olefin polymerization catalyst, comprising the following steps: a carrier reacts with a chemical activator to obtain a modified carrier; a magnesium compound is dissolved in a tetrahydrofuran-alcohol mixed solvent to form a solution, then the modified carrier is added to the solution to perform a reaction, then filtered and washed, dried and suction dried to prepare a composite carrier; a nonmetallocene olefin polymerization catalyst is dissolved in a solvent, and then reacts with said composite carrier, then is washed and filtered, dried and suction dried, to prepare a supported nonmetallocene olefin polymerization catalyst. The present invention further relates to a supported nonmetallocene olefin polymerization catalyst as prepared by this method. The present invention further relates to the use of the supported nonmetallocene olefin polymerization catalyst in an olefin polymerization and an olefin copolymerization between two or more different olefins. In one specific embodiment, the present invention relates to the use of the supported nonmetallocene olefin polymerization catalyst in a slurry ethylene polymerization. The present invention provides a new type of catalyst that improves the polymer morphology, increases polymer bulk density and enhances polymerization activity.
US7875568B2
申请人:——
公开号:US7875568B2
公开(公告)日:2011-01-25
Deplacements homolytiques intramoleculaires. 12-decomposition induite de peroxydes ethyleniques : influence de la longueur de la chaine
作者:M.J. Bourgeois、B. Maillard、E. Montaudon
DOI:10.1016/s0040-4020(01)82080-9
日期:1986.1
Products analyses of the thermolyses of the peroxides CH2=CH-(CH2)n OOtBu, , (n= 1-5) showed that an induced decomposition of occured for n=l,2,3,4. Free radical additions of THF, carbon tetrachloride, bromotrichloromethane to have been performed at lower temperature ; they allowed, through the isolation of an adduct peroxide, at least in one case for each peroxide, to prove that a two-steps mechanism