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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 scaling, polymer transport solvent removal, difficulty in granulation, etc., and achieves less scaling, convenient transportation and preparation process simple effect

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

[0097] 1) Preparation of ligand:

[0098] ɑ-diimine compound A1 4.42g (8mmol), then add 50ml tetrahydrofuran, lithium aluminum tetrahydride 0.61g (16mmol), and stir at 60°C for 6 hours. After cooling, the reaction was terminated with aqueous sodium hydroxide solution, and the organic phase was extracted with ethyl acetate, dried, filtered, and recrystallized to obtain colorless crystals as ligand L1 with a yield of 63%. 1 HNMR (CDCl 3 , 300MHz) 7.02-7.23(m,14H),4.03(s,2H,NH),3.75(m,2H),3.04(m,2H),2.88(m,4H,CH(CH 3 ) 2 ),1.19(d,24H,CH 3 ).

[0099] 2) Preparation of complex 1: 10ml (DME) NiBr 2 (277mg, 0.9mmol) in dichloromethane solution was added dropwise to 10ml of ligand L1 (501mg, 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 80%. Elemental analysis (C 40 h 48 Br 2 N 2 Ni): C, 61.97; H, 6.24; N, 3.61; found (%): C, 62.25...

Embodiment 2

[0102] 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 7.8 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 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.

[0103] Figure 1-Figure 2 The obtained copolymer and the cross-sectional view of the copolymer are shown, and it can be seen that the obtained spherical polymer has a cavity inside.

Embodiment 3

[0105] 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 7.8 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 preparation method of olefin-olefin alcohol copolymer, which comprises contacting and reacting olefin and olefin alcohol represented by formula I with a catalyst and optionally a chain transfer agent in the presence of an alkane solvent to obtain the copolymerization In formula I, L1‑L3 are each independently selected from H or C 1 -C 30 Alkyl, L4 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): C08F4/70C08F210/16C08F216/04C08J9/16C08L23/08
CPCC08F210/16C08J9/16C08J2323/08C08F216/04C08F4/7098C08F2500/01
Inventor 高榕郭子芳周俊领刘东兵王洪涛黄庭李岩傅捷李昕阳
Owner CHINA PETROLEUM & CHEM CORP
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