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Olefin copolymer with polar monomer structural units and preparation method of olefin copolymer

An olefin copolymer and structural unit technology, which is applied in the field of copolymerization of olefins and polar monomers, can solve the problems such as the copolymerization of high-grade alpha-olefins and polar monomers, and the decrease of molecular weight of polymerized active polymers. Heat resistance, improve dyeability, improve surface energy effect

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mitsui's "FI catalyst" can also be used for the copolymerization of ethylene and polar monomers; using this type of catalyst, 5-hexenyl-1-acetate and ethylene were successfully copolymerized, with the increase in the amount of comonomer , the content of polar monomers in the polymer increases, up to 3.2%; but at the same time, the polymerization activity and the molecular weight of the polymer decrease significantly (J.Am.Chem.Soc.2008,130,17636)
[0011] At present, the research on the copolymerization of olefins and polar monomers mainly focuses on the copolymerization of ethylene and propylene, and there is no report on the copolymerization of higher α-olefins and polar monomers.

Method used

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  • Olefin copolymer with polar monomer structural units and preparation method of olefin copolymer
  • Olefin copolymer with polar monomer structural units and preparation method of olefin copolymer
  • Olefin copolymer with polar monomer structural units and preparation method of olefin copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Example 1 Synthesis of poly(4-methyl-1-pentene-co-4-penten-1-ol)

[0067] The dried 100 ml polymerization bottle was vacuumed and flushed with nitrogen repeatedly three times. At room temperature, start stirring, add 1.0 ml toluene, 3.0 ml 4-methyl-1-pentene, 0.2 ml 4-penten-1-ol, 9.0 ml MAO (methylaluminoxane) toluene solution, 2.0 ml A toluene solution containing 20 micromoles of dimethylsilyl bridged bis(2-methyl-indenyl)zirconium dichloride, and the timer was started. After 20 hours, stop stirring, carefully pour the reaction solution into a beaker, add acidified ethanol, stir for more than 6 hours, filter to obtain the polymer, and vacuum-dry the filter cake at 60°C for 24 hours, weigh to obtain 0.73 g of the polymer, monomer The weight conversion rate was 34%.

Embodiment 2

[0068] Example 2 Synthesis of poly(4-methyl-1-pentene-co-9-decen-1-ol)

[0069] The dried 100 ml polymerization bottle was vacuumed and flushed with nitrogen repeatedly three times. At 50°C, start stirring, add 3.0 ml 4-methyl-1-pentene, 0.5 ml 9-decen-1-ol, 12.0 ml MAO toluene solution, 1.0 ml containing 50 micromole dimethylsilyl (2-Methyl-indenyl)zirconium dichloride in toluene, start timing. After 20 minutes, stop stirring, pour the reaction solution into a beaker carefully, add acidified ethanol, stir for more than 6 hours, filter to obtain the polymer, and vacuum-dry the filter cake at 60°C for 24 hours, weigh to obtain 0.85 g of the polymer, monomer The weight conversion rate is 35%.

Embodiment 3

[0070] Example 3 Synthesis of poly(4-methyl-1-pentene-co-9-decen-1-ol)

[0071] The dried 100 ml polymerization bottle was vacuumed and flushed with nitrogen repeatedly three times. At room temperature, start stirring, add 3.0 ml 4-methyl-1-pentene, 0.5 ml 9-decen-1-ol, 12.0 ml MAO toluene solution, 1.0 ml containing 50 micromole dimethylsilyl bridge bis( 2-methyl-indenyl) toluene solution of zirconium dichloride, start timing. After 2 hours, stop stirring, carefully pour the reaction solution into a beaker, add acidified ethanol, stir for more than 6 hours, filter to obtain the polymer, and vacuum-dry the filter cake at 60°C for 24 hours, weigh to obtain 0.83 g of the polymer, monomer The weight conversion rate was 34%.

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Abstract

The invention relates to an olefin copolymer with polar monomer structural units and a preparation method of the olefin copolymer with the polar monomer structural units. The olefin copolymer is prepared from polar monomers, a monomer 4-methyl-1-pentene and other monomers through copolymerization. The general formula of the olefin copolymer is as shown in the description, wherein n, m and p respectively represent number-average degrees of polymerization of the monomer 4-methyl-1-pentene, the polar monomers and the other monomers in the copolymer, and the monomer structural units are randomly distributed in the sequence and are isotactically distributed in a stereoscopic structure. By introducing polar monomer structural units in a polymer chain, the surface performance of the polymer can be effectively improved when a high melting point is maintained, and the surface energy is improved. The preparation method comprises the step of carrying out copolymerization on the polar monomers, the monomer 4-methyl-1-pentene and the other monomers by virtue of a polymerization catalyst system, so as to prepare the olefin copolymer with the polar monomer structural units, wherein the polymerization catalyst system is capable of polymerizing alpha-olefin into an isotactic polymer and contains transition metal compounds.

Description

technical field [0001] The invention belongs to the technical field of copolymerization of olefins and polar monomers, and relates to an olefin copolymer containing polar monomer structural units and a manufacturing method thereof. Background technique [0002] Crystalline polyolefin materials have a melting point, which depends on the type of monomer, the type, degree and defect of polymer stereoregularity, and the type of crystallization. For example, unbranched polyethylene has a melting point of around 140°C, while highly isotactic polyethylene has a melting point of around 170°C. The melting point of polyolefin materials determines its use to a large extent, and materials with high melting points may be used under harsher conditions. [0003] An α-olefin having a higher carbon number than propylene is used as a monomer for polymerization, and it is possible to obtain a polyolefin material having a high melting point. The isotactic pentad ([mmmm]) disclosed in Chinese ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/14C08F216/04C08F4/6592
Inventor 王伟郑刚王洪涛
Owner CHINA PETROLEUM & CHEM CORP
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