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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，应用在聚烯烃系树脂改性用乙烯-α-烯烃共聚物领域，能够解决强度、透明性降低、改良水平不充分、乙烯系聚合物设计不充分等问题，达到改良效果优异、冲击强度与刚性的均衡性优异的效果

Active Publication Date: 2016-11-02
JAPAN POLYETHYLENE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using these methods, there is no significant reduction in the impact strength of polyolefin resins caused by conventional HPLD modification, but the design of vinyl polymers containing long-chain branches is not sufficient, so strength, transparency, etc. are still unavoidable. Sexual reduction, the level of improvement is not sufficient

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

[0157] 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.

[0158] It should be noted that the baseline and interval of the obtained chromatogram are as follows figure 1 Proceed as shown.

[0159] 1-7. Conditions (4)

[0160] The ratio (Mz / Mw) of the Z weight average molecular weight (Mz) to the weight average molecular weight (Mw) of the ethylene-α-olefin copolymer in the present invention is 2.0 to 6.0, preferably 2.1 to 5.5, more preferably 2.2 to 5.3 , more preferably more than 2.2 and less than 5.0, particularly preferably 2.3 to less than 3.6. When Mz / Mw is less than 2.0, moldability, especially melt fluidity, when blended with a polyolefin resin is poor, or it is difficult to mix with other polymer components, so it is preferably avoided. When Mz / Mw exceeds 6.0, the improvement effect of the rigidity and impact strength of the polyolefin resin and its mold...

Embodiment 1

[0335] (1) Synthesis of bridged cyclopentadienyl indenyl compounds;

[0336] According to the method described in [0140] to [0143] of Japanese Patent Laid-Open No. 2013-227271, dimethylsilylene (4-(4-trimethylsilyl-phenyl)-indene was synthesized by the following method base) (cyclopentadienyl) zirconium dichloride.

[0337] (II) Materials used

[0338] [Synthesis of Metallocene Compounds]

[0339] (i) Metallocene compound A: Synthesis of dimethylsilylene (4-(4-trimethylsilyl-phenyl)-indenyl)(cyclopentadienyl)zirconium dichloride

[0340] (1-1) Synthesis of 4-(4-trimethylsilyl-phenyl)-indene

[0341] 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 100...

Embodiment 2

[0352] (1) Synthesis of catalysts for olefin polymerization;

[0353] In a nitrogen atmosphere, 30 g of silica obtained by firing at 400° C. for 5 hours was added to a 500 ml three-necked flask, and then 195 ml of dehydrated toluene was added to form a slurry. Under a nitrogen atmosphere, add the dimethylsilylene (4-(4-trimethylsilyl-phenyl)-indene synthesized in Example 1 (1) to a separately prepared 200ml two-necked flask Base) 410 mg of (cyclopentadienyl) zirconium dichloride was dissolved in 80.4 ml of dehydrated toluene, and then 82.8 ml of 20% methylalumoxane / toluene solution manufactured by Albemarle Corporation was added at room temperature, and stirred for 30 minutes. A 500ml three-necked flask to which the toluene slurry solution of silica was added was heated and stirred in an oil bath at 40° C., and the toluene solution of the reactant of the zirconocene complex and methylaluminoxane was added in a total amount. After stirring at 40° C. for 1 hour, the mixture was...

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Abstract

To provide an ethylene-alpha-olefin copolymer that has an excellent polyolefin resin molding characteristic-improving effect and that has an excellent balance-improving effect with respect to impact strength and rigidity. 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. More specifically, it relates to blending with a polyolefin-based resin to improve moldability and appropriately improve the balance between impact strength and rigidity of the resin An ethylene-α-olefin copolymer for modifying polyolefin resins with excellent performance; 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, polyolefin-based resins (olefin-based polymers) are widely used for reasons such as low cost, light weight, moldability, rigidity, impact strength, transparency, chemical resistance, and excellent recyclability. Generally, molding processing of polyolefin-based resins is carried out in a molten state. However, in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/16C08F4/6592
CPCC08F4/65912C08F4/65916C08J5/18C08J2323/08C08F210/16C08L23/0815C08L2205/025C08F4/65927C08F210/14C08F2500/26
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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