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Ethylene-[alpha]-olefin copolymer and olefin resin composition

一种烯烃共聚物、烯烃系树脂的技术，应用在烯烃系树脂组合物领域，能够解决流动性、伸长粘度低、冲击强度外观不良、成型加工性不充分等问题，达到熔融张力大、机械强度优异、成型加工特性优异的效果

Active Publication Date: 2016-10-26
JAPAN POLYETHYLENE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Utilizing these methods, it has been possible to obtain polyethylene resin compositions excellent in rigidity, impact strength, and ESCR, but their fluidity and elongational viscosity are low, so molding processability is insufficient, and it is still necessary to blend HPLD and high molecular weight polyethylene, Unavoidable reduction in impact strength and poor appearance

Method used

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  • Ethylene-[alpha]-olefin copolymer and olefin resin composition
  • Ethylene-[alpha]-olefin copolymer and olefin resin composition
  • Ethylene-[alpha]-olefin copolymer and olefin resin composition

Examples

Experimental program
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Effect test

preparation example Construction

[0098] Preparation of sample: ODCB (containing 0.5 mg / mL of BHT) was used as a sample, a 1 mg / mL solution was prepared, and it was dissolved at 140° C. for about 1 hour.

[0099] It should be noted that the baseline and interval of the obtained chromatogram are as follows figure 1 Proceed as shown.

[0100] 1-4. Conditions (5)

[0101] The branching index of the ethylene-α-olefin copolymer in the present invention is measured by a GPC measuring device combined with a differential refractometer, a viscosity detector and a light scattering detector on the basis of the above-mentioned conditions (1) to (3). The minimum value (gc) of g' between 100,000 and 1,000,000 molecular weight is 0.40 to 0.85, preferably more than 0.50 and not more than 0.80, more preferably more than 0.52 and not more than 0.80, still more preferably more than 0.53 and not more than 0.80, particularly preferably More than 0.53 and less than 0.73. g C When the value is larger than 0.85, moldability dete...

Embodiment 1

[0341] (1) Synthesis of bridged cyclopentadienyl indenyl compounds;

[0342] Synthesize dimethylsilylene (4-(4-trimethylsilyl-phenyl)-indenyl) (cyclo pentadienyl) zirconium dichloride.

[0343] (i) Metallocene compound A: Synthesis of dimethylsilylene (4-(4-trimethylsilyl-phenyl)-indenyl)(cyclopentadienyl)zirconium dichloride

[0344] (1-1) Synthesis of 4-(4-trimethylsilyl-phenyl)-indene

[0345] Add 10.0g (51.5mmol) of 4-trimethylsilylphenylboronic acid and 200ml of dimethoxyethane into a 500ml flask to form a solution, then add 27.3g (128mmol) of potassium phosphate, 100ml of water, and 4-bromo Indene 8.37g (43.0mmol), triphenylphosphine 0.22g (0.86mmol), PdCl 2 (PPh 3 ) 2 0.300g (0.430mmol), stirred and refluxed for 12 hours. Cool to room temperature and add 100ml of water. The organic phase was separated, and then the aqueous phase was extracted twice with 100 ml of ethyl acetate, the obtained organic phases were mixed, washed with saline, and sodium sulfate was ad...

Embodiment 2

[0356] Manufacture of ethylene-1-hexene copolymer;

[0357] Ethylene-1-hexene gas-phase continuous copolymerization was carried out in the same manner as in Example 1 (3) except that the powdery catalyst obtained in Example 1 (2) was used under the conditions described in Table 2. The results are shown in Table 3.

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Abstract

The invention provides an ethylene-[alpha]-olefin copolymer that has excellent mechanical strength and excellent molding characteristics. An ethylene-[alpha]-olefin copolymer that has a specific melt flow rate (MFR), density, and molecular weight distribution, that contains a suitable amount of a long chain branching structure that is characterized by branching index, and that has a specific composition distribution structure that is characterized by solvent fractionation behavior.

Description

technical field [0001] The present invention relates to a novel ethylene-α-olefin copolymer and an olefin-based resin composition, and more specifically, to an ethylene-α-olefin copolymer having excellent mechanical strength and excellent moldability, and an olefin containing the copolymer resin composition and an olefin resin composition containing the same. Background technique [0002] In recent years, plastic films, sheets, injection moldings, pipes, extrusion moldings, hollow moldings, and the like have been widely used in various industrial fields. In particular, polyethylene-based resins (ethylene-based polymers) are widely used for the reasons of low cost, light weight, moldability, rigidity, impact strength, transparency, chemical resistance, and excellent recyclability. In general, molding processing of polyethylene-based resins is carried out in a molten state. However, in the case of an ethylene-based polymer alone, its melting characteristics are insufficient ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/16C08F4/6592
CPCC08F4/65912C08F4/65916C08J5/18C08J2323/08C08F210/16C08L23/0815C08F4/65927C08F210/14C08F2500/12C08F2500/26
Inventor 石滨由之原田亮太郎青木胜饭场显司小玉和史林大翔
Owner JAPAN POLYETHYLENE CORP
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