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Ethylene/alpha-olefin copolymer and preparation method therefor

An olefin copolymer, ethylene technology, applied in the field of ethylene/α-olefin copolymer and its preparation, can solve the problems of reducing power generation efficiency and leakage, and achieve the effects of excellent insulation properties and high volume resistance

Active Publication Date: 2021-12-07
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the presence of such a potential difference, leakage current may occur and the power generation efficiency will rapidly decrease, which is called the PID phenomenon

Method used

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  • Ethylene/alpha-olefin copolymer and preparation method therefor
  • Ethylene/alpha-olefin copolymer and preparation method therefor
  • Ethylene/alpha-olefin copolymer and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0073] In addition, the preparation method may further include the steps of: filtering the material obtained in the step (S3), washing and drying the filtrate, thereby obtaining an ethylene / α-olefin copolymer.

[0074] Composition for encapsulant film and encapsulant film

[0075] The ethylene / α-olefin copolymer of the present invention can be made into a resin composition by including other materials, and the resin composition can be used as various molded articles by molding by injection or extrusion. In particular, the copolymer can be used as an encapsulant to encapsulate devices in various optoelectronic devices, for example, can be used as an industrial material that can be applied to a lamination process by heating, but its use is not limited thereto.

[0076] In particular, the ethylene / α-olefin copolymer of the present invention can be processed into a composition for an encapsulant film, for example, a silane-modified resin composition or an aminosilane-modified resi...

Embodiment

[0112] Hereinafter, the present invention will be described in more detail with reference to Examples. However, the examples are provided for illustration only, and the scope of the present invention is not limited thereto.

[0113] Catalyst preparation

[0114] (1) Preparation of Ligand Compounds

[0115]

[0116] Weigh and add 4.65 g (15.88 mmol) of chloro(1,2-dimethyl-6,7-dihydro-3H-benzo[b]cyclopenta[d]thiophene- 3-yl) dimethylsilane, and inject 80ml of THF thereinto. Inject tBuNH into it at room temperature 2 (4eq, 6.68ml), and reacted at room temperature for 3 days. After the reaction was completed, THF was removed, and the resulting reaction product was filtered with hexane. After drying the solvent, 4.50 g (86%) of a yellow liquid were obtained.

[0117] 1 H NMR (in CDCl 3 Medium, 500MHz): δ7.99(d,1H), δ7.83(d,1H), δ7.35(dd,1H), δ7.24(dd,1H), δ3.49(s,1H), δ2.37(s, 3H), δ2.17(s, 3H), δ1.27(s, 9H), δ0.19(s, 3H), δ-0.17(s, 3H).

[0118] (2) Preparation of tran...

preparation example 1

[0124] A 1.5 L continuous process reactor was preheated at 120°C while injecting hexane solvent at 5.00 kg / h and 1-butene at 1.30 kg / h. Inject triisobutylaluminum (Tibal, 60 μ mol / min), the transition metal compound (0.35 μ mol / min) of [formula 1] and tetrakis (pentafluorophenyl) borate dimethylanilinium cocatalyst ( 1.05 μmol / min). Then, ethylene (0.87 kg / h) and hydrogen (20 cc / min) were injected into the reactor, and copolymerization was continuously performed for 60 minutes or more while maintaining a pressure of 89 bar and 150° C. to prepare a copolymer. After drying in a vacuum oven for more than 12 hours, an ethylene / α-olefin copolymer was prepared.

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Abstract

The present invention relates to: an ethylene / alpha-olefin copolymer having a reduced stress relaxation time while simultaneously having a high weight average molecular weight and a narrow molecular weight distribution, thereby exhibiting excellent physical properties; and a preparation method therefor. The ethylene / alpha-olefin copolymer of the present invention has a high weight average molecular weight and a narrow molecular weight distribution, and a resin composition, having improved volume resistivity and exhibiting excellent light transmittance, can be prepared using same, and thus the present invention can be used for various uses in the electric / electronic industry field.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 2019-0120125 filed with the Korean Intellectual Property Office on September 27, 2019. technical field [0003] The present invention relates to an ethylene / α-olefin copolymer, a composition for an encapsulant film using the copolymer, and an encapsulant film comprising the copolymer, the copolymer having a reduced characteristic relaxation time and an improved volume resistance, and can be effectively used as an insulating material. Background technique [0004] As global environmental problems, energy problems, etc. become more serious, solar cells are attracting attention as a means of generating energy without worrying about environmental pollution and exhaustion. If the solar cells are used outside such as the roof of a building, a module type solar cell is usually used. In order to obtain a crystalline solar cell module when...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/16C08F210/08C08F210/14C08J5/18C08L23/08H01L31/048
CPCC08F210/16C08J5/18H01L31/0481C08J2323/08C08F210/08C08F210/14C08F2420/02C08F4/65908C08F4/65912C08F2420/06C08F6/12Y02E10/50C08F4/6592C08F2/06C08F2500/03C08F2500/12C08F2500/08C08F2500/02C08F2500/17C08L23/0815C08F210/02C08F210/04C08F2/38C08F2500/18C08L23/06C08L2203/206C08L23/08
Inventor 李映雨金瑟箕李大雄李镇国李银精孔镇衫全晸浩李俊赫
Owner LG CHEM LTD
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