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Copolymer containing polar group and preparation method and application thereof

A technology of polar groups and copolymers, applied in the field of high molecular polymer preparation, to achieve the effect of improving the effect of ball formation and simple preparation process

Active Publication Date: 2021-12-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since vinyl alcohol cannot exist independently in the form of monomers, it is usually obtained by free radical polymerization of ethylene-vinyl acetate, and the copolymer undergoes alcoholysis reaction, but a large amount of solvent needs to be used in the alcoholysis process, and the final The saponification product contains a large amount of impurities such as acetic acid and alkali metal salts, and requires a large amount of water for washing

Method used

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  • Copolymer containing polar group and preparation method and application thereof
  • Copolymer containing polar group and preparation method and application thereof
  • Copolymer containing polar group and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0173] 1) Ligand L1 preparation:

[0174] ɑ-diimine compound A1 3.52g (8mmol), add 30ml toluene, 1M trimethylaluminum (16ml, 16mmol) successively, reflux reaction for 8 hours, stop the reaction with sodium hydroxide / ice water, extract with ethyl acetate, combine The organic phase was dried with anhydrous magnesium sulfate, and the product was separated by petroleum ether / ethyl acetate column chromatography to obtain a colorless crystal ligand L1 with a yield of 85.2%. 1 HNMRδ(ppm)7.23-6.88(m,14H),4.84(s,1H),4.73(s,1H),3.85(s,1H,NH),2.02(s,3H,CH 3 ),1.87(s,6H,CH 3 ),1.75(s,6H,CH 3 ).

[0175] 2) Preparation of complex Ni1: 10ml (DME) NiBr 2 (277mg, 0.9mmol) ethanol solution was added dropwise to 10ml of ligand L1 (274mg, 0.6mmol) in dichloromethane solution, stirred at room temperature for 6 hours, precipitated, filtered and washed with ether and dried to obtain a red powder solid, the yield was 74%. Elemental analysis (C 70 h 74 Br 6 N 4 Ni 3 o 2 ): C, 50.68; H, 4....

Embodiment 2

[0178] 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 2Air replacement 3 times. Inject 500 mL of hexane into the polymerization system, and simultaneously add 8.3 mg (5 μmol) of the complex Ni1, 50 mL of dichloromethane, 30 mmol (5.1 mL) of 2-methyl-2-hydroxy-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.

Embodiment 3

[0180] 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 8.3 mg (5 μmol) of the complex Ni1, 100 mL of dichloromethane, 30 mmol (5.1 mL) of 2-methyl-2-hydroxy-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.

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Abstract

The invention relates to a preparation method of a polar group-containing copolymer and the polar group-containing copolymer prepared by the method. The preparation method of the polar group-containing copolymer comprises the following step: carrying out polymerization reaction on olefin and olefin alcohol in the presence of a catalyst, an improver and an optional chain transfer agent, wherein the used catalyst comprises an amino imine complex as shown in a formula I. The spherical and / or sphere-like polymer prepared by the preparation method has a good prospect in industrial application.

Description

technical field [0001] The invention belongs to the field of polymer preparation, and in particular relates to a polar group-containing copolymer, a preparation method and application thereof. 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 copolymeri...

Claims

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Application Information

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IPC IPC(8): C08F210/02C08F216/04C08F4/70
CPCC08F210/02C08F2410/03C08F4/7021C08F216/04
Inventor 高榕郭子芳周俊领林洁李昕阳赖菁菁顾元宁傅捷
Owner CHINA PETROLEUM & CHEM CORP
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