Supercharge Your Innovation With Domain-Expert AI Agents!

Ethylene-based polymer, polyethylene-based resin composition and use thereof, catalyst component for olefin polymerization, catalyst for olefin polymerization comprising the same, and method for producing an ethylene-based polymer using the catalyst

A resin composition, polyethylene technology, applied in the field of new polyethylene resin composition, production of olefin polymers, molded products and films, can solve the problem of few double bonds, short branch length, and unpredictable improvement in molding processing Sexual effects, etc.

Active Publication Date: 2016-08-31
JAPAN POLYETHYLENE CORP
View PDF87 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the branch length is too short to exert the effect of improving the moldability as a long-chain branch, and strain hardening (strain hardening) of elongational viscosity cannot be exhibited.
[0014] In addition, Patent Document 22 has reported the polymerization of propylene by means of a polymerization catalyst prepared by combining an asymmetric metallocene compound in which cyclopentadienyl and indenyl bridges each having a specific substituent and methylaluminoxane, but this The literature does not mention the possibility of generating long chain branches when the above polymerization is applied to the polymerization of ethylene, and the effect of improving molding processability cannot be expected
[0015] In addition, Patent Document 23 has reported that it is possible to modify the catalyst system for the production of ethylene polymers and ethylene / butene copolymers used as macromonomers, but the number of terminal double bonds in the polymers is small, and the document is limited to long-chain branches generated only by this catalyst possibility not mentioned

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ethylene-based polymer, polyethylene-based resin composition and use thereof, catalyst component for olefin polymerization, catalyst for olefin polymerization comprising the same, and method for producing an ethylene-based polymer using the catalyst
  • Ethylene-based polymer, polyethylene-based resin composition and use thereof, catalyst component for olefin polymerization, catalyst for olefin polymerization comprising the same, and method for producing an ethylene-based polymer using the catalyst
  • Ethylene-based polymer, polyethylene-based resin composition and use thereof, catalyst component for olefin polymerization, catalyst for olefin polymerization comprising the same, and method for producing an ethylene-based polymer using the catalyst

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0137] Sample preparation: A solution of 1 mg / mL sample was prepared using ODCB (containing 0.5 mg / mL BHT) and dissolved at 140° C. for about 1 hour.

[0138] By the way, for example, such as figure 1 The baseline and interval of the chromatogram obtained by the measurement shown.

[0139] 1-4. Conditions (A-4)

[0140] The component (A) in the present invention satisfies the following conditions: elongational viscosity η(t) (unit: Pa·sec) and elongation time measured at a temperature of 170°C and an elongation strain rate of 2 (unit: 1 / sec) In the logarithmic graph of t (unit: second), no inflection point of elongational viscosity attributable to strain hardening is observed or when an inflection point is observed, the maximum elongational viscosity after strain hardening is assumed to be η Max (t 1 ) And the approximate straight line of the elongational viscosity before curing is η Linear (t), then by η Max (t 1 ) / η Linear (t 1 ) Defined strain hardening degree [λmax(2.0)] A 1...

Embodiment 1a

[0950] (1) Production of ethylene polymers (A-1)

[0951] [Preparation of metallocene catalyst A-1]

[0952] In a catalyst preparation device equipped with an electromagnetic induction stirrer, under nitrogen flow, add 1,000ml of pure toluene, 22g of tetraethoxyzirconium (Zr(OEt) 4 ), 75 g of indene and 88 g of methyl butyl cyclopentadiene while maintaining the system at 90° C., 100 g of tripropyl aluminum was added dropwise over 100 minutes, and then reacted at the same temperature for 2 hours. After cooling the reaction product to 40°C, 3,200 ml of a toluene solution of methylaluminoxane (concentration: 2.5 mmol / ml) was added. After stirring for 2 hours, 2,000 g of silica (#952, produced by Grace, surface area: 300 m2 / g) that was calcined at 450°C for 5 hours in advance was added and stirred at room temperature for 1 hour. After that, nitrogen blowing and drying under reduced pressure at 40°C were performed to obtain a solid catalyst A-1 having good fluidity.

[0953] [Production...

Embodiment 2a

[0975] Except in Example 1a(c), a commercially available ethylene polymer (A-2) (UF230, produced by Japan Polyethylene Corporation) produced using a magnesium-titanium composite Ziegler catalyst (A-2) was used ; MFR=1.0g / 10min, density: 0.921g / cm 3 , Ethylene 1-butene copolymer) instead of the ethylene polymer (A-1) produced by the metallocene catalyst, the polyethylene resin composition 2 was processed in the same manner as in Example 1a(c) Production and film forming. The results obtained are shown in Table 1a-1 and Table 1a-2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

An object of the present invention is to provide: a polyethylene-based resin composition having excellent moldability and capable of producing a molded article having a balance between impact strength and rigidity and excellent transparency, and a polyethylene-based resin composition obtained by molding the polyethylene-based resin composition. shaped articles and films. The polyethylene-based resin composition contains 41 to 99% by weight of an ethylene-based polymer (A) satisfying a specific condition and 1 to 59% by weight of an ethylene-based polymer (B) satisfying a specific condition, and the composition as a whole has 0.05 MFR to 50g / 10min and density from 0.910 to 0.960g / cm3.

Description

Technical field [0001] The present invention relates to an ethylene-based polymer having a developed long-chain branch structure and excellent moldability. As another aspect of the present invention, the present invention relates to a new polyethylene resin composition and its use. More specifically, the present invention relates to a polyethylene resin composition that is excellent in moldability and can produce a molded product with a balance between impact strength and rigidity and excellent transparency, and injection molding and compression injection of the polyethylene resin composition. Molded products and films obtained by molding, rotational molding, extrusion molding, hollow molding or blow molding. In addition, the present invention relates to a catalyst component for olefin polymerization containing a specific metallocene compound, a catalyst for olefin polymerization containing the component, and a method for producing an olefin-based polymer by using the catalyst....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08F4/6592C08F10/02
CPCC08F10/02C08F210/16C08J5/18C08L23/0815C08J2323/08C08L2203/16C08L2205/025C08L2314/02C08L2314/06C08F210/14C08F2500/04C08F2500/11C08F2500/12C08F2500/17C08F4/65908C08F4/65912C08F4/65916C08F4/65927C08F2500/26C08F210/08
Inventor 石滨由之浅川亮介樱木努福田哲朗坂田和也青木胜河岸健二吉本圭一
Owner JAPAN POLYETHYLENE CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com