Solid catalyst components for olefin polymerization, catalysts and applications thereof
A solid catalyst, a technology for olefin polymerization, which is applied to solid catalyst components for olefin polymerization, as well as catalysts and application fields thereof, can solve the problems of narrow molecular mass distribution of PP, low catalyst activity, reproductive health and environmental hazards, etc.
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Embodiment 1
[0148] In a 500ml stirred 5-neck flask fully replaced by nitrogen, add 10g of diethoxymagnesium and 80mL of toluene to prepare a suspension, and then add 20mL of titanium tetrachloride dropwise at -10°C. After the dropwise addition, the system After slowly raising the temperature to 10°C, add 60mL of titanium tetrachloride dropwise, then slowly raise the temperature to 90°C, add 3g of 2-benzamide-phenylbenzoate and 1g of 9,9-dimethoxymethylfluorene, and then continue to heat up Keep the temperature at 120°C for 2 hours, then press filter the liquid, remove the liquid, and wash the obtained solid three times at 125°C with 120 mL of titanium tetrachloride. The obtained solid was washed twice with 150 mL of hexane at 60°C and twice at room temperature, the liquid was filtered off and dried to obtain a solid powder which was the solid catalyst component. The titanium content, internal electron donor content and polymerization data of the solid catalyst components are shown in Tabl...
Embodiment 2-8
[0150] The preparation method of the solid catalyst component is the same as in Example 1, except that 2-benzamide-phenylbenzoate is replaced by the compounds in Table 1-Table 3 in sequence.
Embodiment 9
[0152] The preparation method of the solid catalyst component is the same as in Example 7, except that 9,9-bismethoxymethylfluorene is replaced by di-n-butyl phthalate.
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