Solid catalyst component containing o-phenylenediamine compound, catalyst and application thereof

Abstract

The present invention provides a solid catalyst component containing an o-phenylenediamine compound, wherein the solid catalyst component contains Mg, Ti, a halogen and at least an electron donor, andthe electron donor is selected from an o-phenylenediamine compound represented by a general formula (I). The invention further discloses a catalyst containing the solid catalyst component, and applications of the catalyst in olefin polymerization reactions, particularly in propylene polymerization reactions. According to the present invention, the catalyst has high activity and good stereospecificity, the obtained polymer has broad and adjustable molecular weight distribution, and the catalyst is suitable for the production of polymers with characteristics of broad molecular weight distribution and low ash content.

Description

technical field

[0001] The present invention relates to a method for CH 2 =CHR solid catalyst component for olefin polymerization, wherein R is hydrogen or a hydrocarbyl group containing 1-12 carbon atoms, more specifically, the present invention relates to a solid catalyst component containing an o-phenylenediamine compound, A catalyst containing the solid catalyst component and the use of the catalyst in olefin polymerization, especially in propylene polymerization. Background technique

[0002] In the propylene polymerization industry, the most widely studied and applied catalyst is the Ziegler-Natta catalyst, which is prepared by adding an internal electron donor during the process of loading titanium on an active magnesium chloride carrier. Since internal electron donors can change the performance of catalysts to the greatest extent, the research and search for ideal internal electron donor compounds has become the focus and focus of Z-N catalyst research. At present,...

Examples

preparation example Construction

[0136] Preparation of solid catalyst components

[0137] The operations of preparing catalysts in the examples were all carried out under the protection of high-purity nitrogen. Specific examples are as follows.

Embodiment 1

[0139] 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 1,2-di-n-hexanamide-phenylenediamine, then continue to raise the temperature to 120°C and keep the temperature for 2 hours, then press the liquid Filter it clean, remove the liquid, and wash the obtained solid three times with 120 mL of titanium tetrachloride at 125°C. 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 Table 4. ...

Embodiment 2-28

[0141] The preparation method of the solid catalyst component is the same as in Example 1, except that 1,2-di-n-hexanamide-phenylenediamine is replaced by the compounds in Table 1-Table 3 in sequence.

technical field

[0001] The present invention relates to a method for CH 2 =CHR solid catalyst component for olefin polymerization, wherein R is hydrogen or a hydrocarbyl group containing 1-12 carbon atoms, more specifically, the present invention relates to a solid catalyst component containing an o-phenylenediamine compound, A catalyst containing the solid catalyst component and the use of the catalyst in olefin polymerization, especially in propylene polymerization. Background technique

[0002] In the propylene polymerization industry, the most widely studied and applied catalyst is the Ziegler-Natta catalyst, which is prepared by adding an internal electron donor during the process of loading titanium on an active magnesium chloride carrier. Since internal electron donors can change the performance of catalysts to the greatest extent, the research and search for ideal internal electron donor compounds has become the focus and focus of Z-N catalyst research. At present,...

Examples

preparation example Construction

[0136] Preparation of solid catalyst components

[0137] The operations of preparing catalysts in the examples were all carried out under the protection of high-purity nitrogen. Specific examples are as follows.

Embodiment 1

[0139] 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 1,2-di-n-hexanamide-phenylenediamine, then continue to raise the temperature to 120°C and keep the temperature for 2 hours, then press the liquid Filter it clean, remove the liquid, and wash the obtained solid three times with 120 mL of titanium tetrachloride at 125°C. 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 Table 4. ...

Embodiment 2-28

[0141] The preparation method of the solid catalyst component is the same as in Example 1, except that 1,2-di-n-hexanamide-phenylenediamine is replaced by the compounds in Table 1-Table 3 in sequence.

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