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Ethylene polymer, thermoplastic resin composition comprising the polymer, and molded article

A thermoplastic resin and polymer technology, applied in the field of moldings formed from thermoplastic resin compositions, can solve problems such as poor anti-blocking properties, wide composition distribution, low-temperature heat-sealability or deterioration of softness, etc., and achieve excellent low-temperature heat-sealability, The effect of excellent mechanical strength

Inactive Publication Date: 2008-09-17
MITSUI CHEM INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the composition distribution is wide, moldings such as films will be sticky, so the blocking resistance is poor
When the density of the vinyl polymer is too high, although the anti-blocking property can be improved, there are problems such as deterioration of low-temperature heat-sealability and flexibility

Method used

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  • Ethylene polymer, thermoplastic resin composition comprising the polymer, and molded article
  • Ethylene polymer, thermoplastic resin composition comprising the polymer, and molded article
  • Ethylene polymer, thermoplastic resin composition comprising the polymer, and molded article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0228] Preparation of catalyst solution

[0229] Add bis(p-tolyl)methylene(cyclopentadienyl)(octamethyloctahydrodibenzofluorenyl)zirconium dichloride 0.0005 to a glass flask fully replaced with nitrogen. mmol, and a catalyst solution was obtained by adding thereto a hexane solution of MMAO manufactured by Tosoh Fine Chemicals Co., Ltd. so that the amount of aluminum was 0.125 mmol.

[0230] polymerization

[0231] 800 ml of dehydrated hexane and 200 ml of dehydrated 1-octene were placed in a stainless steel autoclave with an internal volume of 2 L that was fully replaced with nitrogen, and after the temperature in the system was raised to 145°C, 1500 ml of hydrogen was charged, and the total was dehydrated by supplying ethylene. The pressure becomes 3MPa-G. Next, 1.0 mmol of triisobutylaluminum and the above-prepared catalyst solution were injected with nitrogen pressure, and polymerization was started by making the stirring rotation number 400 rpm. Thereafter, polymerizati...

Embodiment 2

[0234] Preparation of catalyst solution

[0235] Add bis(p-tolyl)methylene(cyclopentadienyl)(octamethyloctahydrodibenzofluorenyl)zirconium dichloride 0.00025 to a glass flask fully replaced with nitrogen. mmol, a catalyst solution was obtained by adding thereto a hexane solution of TMAO-341 manufactured by Tosoh Fine Chemicals Co., Ltd. so that the amount of aluminum was 0.0625 mmol.

[0236] polymerization

[0237] 800 ml of dehydrated hexane and 200 ml of dehydrated 1-octene were placed in a stainless steel autoclave with an internal volume of 2 L that was fully replaced with nitrogen, and after the temperature in the system was raised to 145°C, 1500 ml of hydrogen was charged, and the total was dehydrated by supplying ethylene. The pressure is 3MPa-G. Next, 1.0 mmol of triisobutylaluminum and the above-prepared catalyst solution were injected with nitrogen pressure, and polymerization was started by making the stirring rotation number 400 rpm. Thereafter, polymerization ...

Embodiment 3

[0239] Preparation of catalyst solution

[0240] Add bis(p-tolyl)methylene(cyclopentadienyl)(octamethyloctahydrodibenzofluorenyl)zirconium dichloride 0.00025 to a glass flask fully replaced with nitrogen. mmol, a catalyst solution was obtained by adding thereto a hexane solution of TMAO-341 manufactured by Tosoh Fine Chemicals Co., Ltd. so that the amount of aluminum was 0.0625 mmol.

[0241] polymerization

[0242] 700 ml of dehydrated hexane and 350 ml of dehydrated 1-octene were placed in a stainless steel autoclave with an internal volume of 2 L that had been fully replaced with nitrogen, and after the temperature in the system was raised to 145°C, 1200 ml of hydrogen was charged, and the total was dehydrated by supplying ethylene. The pressure is 3MPa-G. Next, 1.0 mmol of triisobutylaluminum and the above-prepared catalyst solution were injected with nitrogen pressure, and polymerization was started by making the stirring rotation number 400 rpm. Thereafter, polymeriza...

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Abstract

Disclosed is an ethylene polymer which is a copolymer of ethylene and an alpha-olefin having 4 to 10 carbon atoms and satisfies the following requirements [1] to [4]: [1] the MFR value falls within the range from 0.10 to 100 g / 10 min.; [2] the density (D) falls within the range from 860 to 930 kg / m<3>; [3] the ratio (Mw / Mn) of the weight average molecular weight to the number average molecular weight falls within the range from 1.50 to 3.00 inclusive; and [4] both the ratio (H / W) of the height (H) of a peak having the highest peak intensity to the width (W) of the peak at a height which is half of the height (H) in an elution curve given by temperature rising elution fraction and the density (D) satisfy a specified relationship in accordance with the MFR value of the requirement [1]. Also disclosed is a molded article which comprises the ethylene polymer, is excellent in blocking resistance, a low-temperature heatseal property and a mechanical strength, and can be used suitably for a film or the like.

Description

technical field [0001] The present invention relates to an ethylene-based polymer, a thermoplastic resin composition containing the polymer, and a molded article formed therefrom. Specifically, the present invention relates to an ethylene-based polymer having particularly excellent blocking resistance, low-temperature heat-sealing properties, and excellent mechanical strength, a thermoplastic resin composition containing the ethylene-based polymer, and the ethylene-based polymer and the ethylene-based polymer containing A molded body formed from a thermoplastic resin composition, the molded body is preferably a film. Background technique [0002] Ethylene polymers can be molded by various molding methods and used in various applications. Therefore, various ethylene-based polymers characterized by moldability and performance of molded articles are being developed. [0003] High-pressure low-density polyethylene is used for films, hollow containers, and the like because of i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/02
CPCC08F10/00C08J5/18C08F210/16C08F4/65912C08J2323/08C08L23/0815C08F4/65927C08L2666/02C08F210/14C08F2500/12C08F2500/03C08F2500/08C08F2500/17C08F2500/11C08F210/02C08J5/00C08L23/00
Inventor 佐藤康雄土肥靖杉村健司明石崇弘远藤浩司
Owner MITSUI CHEM INC
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