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A kind of preparation method of olefin-olefin alcohol copolymer

A technology for copolymers and olefin alcohols, which is applied in the field of preparation of olefin-olefin alcohol copolymers, can solve the problems of solvent removal for polymer transportation, difficulty in granulation, scaling and the like, and achieves the effects of convenient transportation and simple preparation process.

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 preparation method of olefin-olefin alcohol copolymer
  • A kind of preparation method of olefin-olefin alcohol copolymer
  • A kind of preparation method of olefin-olefin alcohol copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] 1) ɑ-diimine compound A1 3.52g (8mmol), add 30ml toluene, 1M trimethylaluminum (16ml, 16mmol) successively, reflux for 8 hours, stop the reaction with sodium hydroxide / ice water, extract with ethyl acetate , the organic phases were combined and dried over 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%. 1HNMRδ(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 ).

[0114] 2) Preparation of complex 1: 10ml (DME) NiBr 2 (277mg, 0.9mmol) in dichloromethane solution was added dropwise to 10ml of ligand L1 (411mg, 0.9mmol) in dichloromethane solution, stirred at room temperature for 6 hours, a precipitate precipitated, filtered, washed with ether, and dried to obtain a red powder solid. The yield was 84%. Elemental analysis (C 33 h 32 Br 2 N 2 Ni): C, 58.71; H, 4.78; N, 4.15; found (%):...

Embodiment 2

[0117] 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 6.7 mg (10 μmol) of complex 1, 30 mmol (5.1 mL) of 2-methyl-2-hydroxyl-7-octene and 30 mL of AlEt 3 (1.0mol / L hexane solution), 6.5mL MAO (1.53mol / L toluene solution), at 20°C, keep ethylene pressure of 10atm, and stir for 30min. Finally, it was neutralized with an ethanol solution acidified with 5 volume % hydrochloric acid to obtain a polymer. The polymerization activity and the performance parameters of the polymer are shown in Table 1.

[0118] figure 1 and figure 2 The overall and cross-sectional views of the copolymer prepared in this example are shown, and it can be seen that the spherical polymer has a cavity inside.

Embodiment 3

[0120] 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 6.7 mg (10 μmol) of complex 1, 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 5 volume % 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 discloses a method for preparing an olefin-olefin alcohol copolymer, comprising contacting and reacting an olefin and an olefin alcohol represented by formula I with a catalyst and optionally a chain transfer agent in the presence of an alkane solvent to form the copolymer In formula Ⅰ, L 1 -L 3 each independently selected from H or C 1 -C 30 Alkyl, L 4 is C with side groups 1 -C 30 Alkylene; the C 1 -C 30 Alkyl groups are optionally substituted with substituents. The copolymer prepared by the method provided by the invention has good morphology and has good prospect in industrial application.

Description

technical field [0001] The invention relates to a preparation method of olefin-olefin alcohol copolymer. 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 introduce copolymerized polar monomers into polyolefin chains, this ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F210/02C08F4/70
CPCC08F210/02C08F4/7006
Inventor 高榕郭子芳周俊领王洪涛李岩黄庭林洁傅捷赖菁菁
Owner CHINA PETROLEUM & CHEM CORP
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