Catalyst component for olefin polymerization or copolymerization as well as preparation method and application of catalyst component
An olefin polymerization and catalyst technology, applied in the field of olefin polymerization catalysts, can solve the problems of fragmentation, rising fine powder content, unsatisfactory and other problems, and achieve the effects of low fine powder content, good hydrogen regulation performance and high bulk density
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Embodiment 1
[0088] (1) Preparation of catalyst components
[0089] To a 250mL four-necked flask equipped with a temperature controller, a stirrer, and a reflux condenser, which was purged and protected with nitrogen, 120mL of tetrahydrofuran (THF), 4.2g of magnesium chloride and 1.0mL of TiCl were successively added under stirring. 4 , heated up to 68° C. under stirring, and refluxed at this temperature for 4 hours to obtain the mother liquor;
[0090] Into a 250 mL four-necked flask equipped with a temperature controller, a stirrer, and a reflux condenser, which was purged and protected with nitrogen, 5.5 g of silica gel (Cabot Corporation TS-610, particle size less than 1 μm) and 1.0 g of organic Silicone polymer [with (CH 3 ) 2 SiCl 2 and (CH 3 ) SiCl 3 To mix the monomers, control the value of r / s to 1.3, and co-hydrolyze the mixed monomers to obtain a network-structured organosilicon polymer], the weight ratio of silica gel to organosilicon polymer is 5.5, add the above mother l...
Embodiment 2
[0095] Compared with Example 1, only in the preparation of step (1) catalyst component "add 5.5g silica gel (Cabot Corporation TS-610, particle diameter is less than 1 μm) and 1.0g organosilicon polymer (with (CH 3 ) 2 SiCl 2 and (CH 3 ) SiCl 3 To mix the monomers, control the value of r / s to 1.3, and co-hydrolyze the mixed monomers to obtain a network-structured silicone polymer), and the weight ratio of silica gel to silicone polymer is 5.5" to "add 6.4 grams of silica gel (Cabot Corporation TS-610, particle size less than 1μm) and 0.1g silicone polymer (in the form of (CH 3 ) 2 SiCl 2 and (CH 3 ) SiCl 3 For the mixed monomer, the value of r / s is controlled to be 1.3, and the mixed monomer is co-hydrolyzed to obtain the organosilicon polymer of the network structure), the weight ratio of silica gel to the organosilicon polymer is 64", and the others are the same as in Example 1. Wherein , the content of organosilicon polymer in the catalyst is calculated to be 0.585w...
Embodiment 3
[0097] Compared with Example 1, only in the preparation of step (1) catalyst component "add 5.5g silica gel (Cabot Corporation TS-610, particle diameter is less than 1 μm) and 1.0g organosilicon polymer (with (CH 3 ) 2 SiCl 2 and (CH 3 ) SiCl 3 To mix the monomers, control the value of r / s to 1.3, and co-hydrolyze the mixed monomers to obtain a network-structured organosilicon polymer), and the weight ratio of silica gel to organosilicon polymer is 5.5" to "add 6.0 grams of silica gel (Cabot Corporation TS-610, particle size less than 1μm) and 0.5g silicone polymer (in the form of (CH 3 ) 2 SiCl 2 and (CH 3 ) SiCl 3 For the mixed monomer, the value of r / s is controlled to be 1.3, and the mixed monomer is co-hydrolyzed to obtain the organosilicon polymer with a network structure), the weight ratio of silica gel to the organosilicon polymer is 12", and the others are the same as in Example 1. Wherein , the content of organosilicon polymer in the catalyst was calculated t...
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