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A kind of method for preparing olefin-olefin alcohol copolymer

A technology of olefinic alcohols and copolymers, which is applied in the field of high molecular polymer preparation, and can solve problems such as scaling, removal of polymer transport solvents, and difficulties in granulation, and achieve the effect of not easy to scale and convenient transportation

Active Publication Date: 2022-03-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, no matter what method is used for polymerization, the obtained polymer is a viscous massive solid, which is easy to foul in the polymerization equipment, and brings difficulties to the transportation, solvent removal, and granulation of the polymer.

Method used

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  • A kind of method for preparing olefin-olefin alcohol copolymer
  • A kind of method for preparing olefin-olefin alcohol copolymer
  • A kind of method for preparing olefin-olefin alcohol copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0125]

[0126] Preparation of complex Ni1

[0127] Will contain 0.277g (0.9mmol) (DME) NiBr 2 The ethanol solution (10mL) was slowly added dropwise to the ligand L containing 0.233g (0.6mmol) 1 dichloromethane solution (10 mL). The color of the solution immediately turned dark red, and a large amount of precipitate formed. Stir at room temperature for 6 h, add anhydrous ether to precipitate. The filter cake was obtained by filtration, washed with anhydrous ether, and vacuum-dried to obtain a brownish-red powdery solid Ni 1 . Yield: 78.2%. Elemental analysis (C 60 h 58 Br 6 N 4 Ni 3 o 2 ): C, 47.33; H, 3.84; N, 3.68; found (%): C, 47.38; H, 4.00; N, 3.46.

[0128] Dry the 1L stainless steel polymerization kettle equipped with mechanical stirring at 130 ° C for 6 hours, vacuumize while it is hot and use N 2 Air replacement 3 times. Inject 500 mL of hexane into the polymerization system, and simultaneously add 7.6 mg (5 μmol) of the complex Ni1, 15 mmol (2.5 mL)...

Embodiment 2

[0130] Dry the 1L stainless steel polymerization kettle equipped with mechanical stirring at 130 ° C for 6 hours, vacuumize while it is hot and use N 2 Air replacement 3 times. Inject 500 mL of hexane into the polymerization system, and simultaneously add 7.6 mg (5 μmol) of the complex Ni1, 30 mmol (5.1 mL) of 2-methyl-2-hydroxyl-7-octene, 30 mL of AlEt 3 (1.0mol / L hexane solution), 6.5mL MAO (1.53mol / L toluene solution), at 30°C, keep 10atm ethylene pressure, and stir for 30min. Finally, it was neutralized with an ethanol solution acidified with 10 wt% hydrochloric acid to obtain a polymer. The polymerization activity and the performance parameters of the polymer are shown in Table 1.

[0131] figure 1 Photographs of spherical and / or spherical-like polymers prepared in this example are shown.

Embodiment 3

[0133] Dry the 1L stainless steel polymerization kettle equipped with mechanical stirring at 130 ° C for 6 hours, vacuumize while it is hot and use N 2 Air replacement 3 times. Inject 500 mL of hexane into the polymerization system, and simultaneously add 7.6 mg (5 μmol) of the complex Ni1, 30 mmol (5.1 mL) of 2-methyl-2-hydroxyl-7-octene, 30 mL of AlEt 3(1.0mol / L hexane solution), 6.5mL MAO (1.53mol / L toluene solution), at 60°C, keep 10atm ethylene pressure, and stir for 30min. Finally, it was neutralized with an ethanol solution acidified with 10 wt% hydrochloric acid to obtain a polymer. The polymerization activity and the performance parameters of the polymer are shown in Table 1.

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Abstract

The invention relates to a method for preparing an olefin-olefin alcohol copolymer and an olefin-olefin alcohol copolymer prepared by the method. The catalyst used in the preparation method of the olefin-olefin alcohol copolymer is the diimine metal complex shown in formula I. Spherical and / or spherical-like polymers can be obtained through the preferred embodiment of the preparation method of the present invention, which has good prospects in industrial applications.

Description

technical field [0001] The invention belongs to the field of polymer preparation, and in particular relates to a method for preparing olefin-olefin alcohol copolymers. Background technique [0002] Polyolefin products are low in price, excellent in performance and wide in application. Under the condition of retaining the original excellent physical and chemical properties of polyolefin, introducing polar groups into the polyolefin molecular chain through chemical synthesis can improve its chemical inertness, printing and dyeing properties, wettability and compatibility with other materials properties, endowing it with new properties that its raw materials do not have. At present, most industries use high-pressure free radical polymerization to promote the direct copolymerization of olefins and polar monomers, such as ethylene-vinyl acetate, ethylene-methyl methacrylate, and ethylene-acrylic acid copolymers. Although high-pressure radical copolymerization can directly intro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F210/02C08F216/04C08F4/70
CPCC08F210/02C08F2410/03C08F216/04C08F4/7006
Inventor 高榕郭子芳李昕阳张晓帆赖菁菁刘东兵顾元宁周俊领安京燕
Owner CHINA PETROLEUM & CHEM CORP
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