| CPC C08F 110/06 (2013.01) [C08F 2410/00 (2013.01)] | 5 Claims |
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1. A method for forming a catalyst for olefin polymerization and copolymerizing olefins utilizing the catalyst, the method comprising:
(1) forming a solid catalytic component (A) by bringing components consisting of a dialkoxy magnesium compound (a), a titanium halogen compound (b), an electron-donating compound (c) having no phthalic acid ester structure, and optionally a polysiloxane, into contact with each other; and
forming the catalyst by performing a pre-contact treatment of bringing:
the formed solid catalytic component (A),
an organoaluminum compound (B) which is triethyl aluminum, and
an external electron-donating compound (C)
into contact with each other under an inert gas atmosphere at a temperature of 13° C. or lower for a time in a range from 5 seconds to 20 minutes in the absence of the olefin to produce the catalyst that is directly usable to catalyze olefin polymerization,
wherein the dialkoxy magnesium compound (a) is diethoxy magnesium,
wherein the titanium halogen compound (b) is titanium tetrachloride,
wherein the electron-donating compound (c) having no phthalic acid ester structure is at least one compound selected from the group consisting of 2-benzyloxy ethyl phenyl carbonate, 2-ethoxyethyl-1-methyl carbonate, and 2-ethoxyethyl-1-ethyl carbonate,
wherein the external electron-donating compound (C) is cyclohexylmethyldimethoxysilane; and
(2) copolymerizing the olefins in a presence of the solid catalytic component (A),
wherein the method is performed without washing the solid catalytic component (A) during and after the step (1).
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