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Polypropylene film and multilayered laminate

A technology of polypropylene film and laminated materials, applied in the field of polypropylene film, which can solve the problems of lack of interlayer strength and other problems

Inactive Publication Date: 2002-12-11
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such copolymers have the problem of becoming too viscous when softened
Multilayer laminates are known to lack sufficient interlaminar strength when produced without the use of adhesives, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0318] Preparation of 1,2-ethylene(2-indenyl)(1-(2-isopropylindenyl)) hafnium dichloride

[0319] Into a 100 mL three-necked flask were added 20 mL of THF and 1.69 g (9.9 mmol) of 2-isopropylindenyllithium, and the solution was cooled to -78°C. After adding 1.74 ml (10 mmol) of hexamethylphosphoramide, a solution of 20 ml of THF and 2 g (8.96 mmol) of 1-bromo-2-(2-indenyl)ethane was added dropwise from the dropping funnel. After stirring at room temperature for 8 hours, 5 mL of water and 100 mL of ether were added sequentially. Using a separating funnel, the organic phase was washed three times with 50 ml of aqueous copper sulfate. The solvent was removed by distillation of the separated organic phase and the residue was purified in a column using hexane eluent to give 2 g of 1-(2-indenyl)-2-(1-(2-isopropane Indenyl)) ethane.

[0320] Then, under a stream of nitrogen, 20 ml of diethyl ether and 2 g of 1-(2-indenyl)-2-(1-(2-isopropylindenyl))ethane were added to a 200 ml sch...

Embodiment 1

[0325] After completely vacuum-drying the 1-liter stainless steel autoclave equipped with a stirrer at 80° C., the pressure was returned to atmospheric pressure by nitrogen, and the autoclave was cooled to room temperature. Under a stream of dry nitrogen, 400 mL of deoxygenated dry heptane and 0.5 mL of a 2.0 M solution of triisobutylaluminum in heptane (1.0 mmol) were added to the autoclave, and the mixture was stirred at 350 rpm for a while. To a 50-mL Schlenk test tube purged with nitrogen, add: 10 mL of toluene and 0.5 mL of a 2M heptane solution of triisobutylaluminum (1.0 mmol), 1.0 mL of methylaluminoxane (MAO) 2M solution in toluene (2.0 mmol) and 0.2 mL of 1,2-ethylene(2-indenyl)(1-(2-isopropylindenyl)) hafnium dichloride in 10 μmol / mL heptan a slurry of alkanes (2.0 micromoles), and the mixture was stirred at room temperature for 3 minutes. The catalyst slurry thus prepared was quickly charged into the autoclave, and then the mixture was started to be stirred at a r...

Embodiment 2

[0341]The resin is formed into a laminate using a multilayer laminate forming machine equipped with a feeder type T-die. Feed block type T-die is available: T-die available from Koshin Engineering Co., Ltd., feed block available from Tawaraya Tekkosho Co., Ltd., available from Placo. Co., Ltd. ( No. 1) "EX40 type" extruder, "VS30-26 type" extruder from Tanabe Plastics Machinery Co., Ltd. (No. 2), and "VS30-26 type" from Rikua Co., Ltd. (No. 3 ) "RT-3-30" extruder. The polypropylene obtained in Example 1 was extruded by No. 1 extruder, and E-105-GM (polypropylene obtained from Idemitsu Petrochemical Co., Ltd.) by No. 2 and 3 extruders ) to obtain a laminate with a total thickness of 30 microns and a thickness ratio of polypropylene layer / E-105GM layer of 1 / 2. The resin extruded by the No.2 extruder is divided into two layers so as to produce a four-layer structure with three resins, the order from the opposite side of the first quench rolling surface is No.1 / No.2 / No. .3 / No.2...

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Abstract

The polypropylene film of the present invention satisfies the following formula: TM≥12.5×HST-900, where TM is the tensile modulus (MPa), and HST is the heat-sealing temperature (°C). The polypropylene film has a good balance between tensile modulus and heat sealing temperature, is less tacky, and has excellent processability, clarity and impact resistance. The invention also discloses a multi-layer polyolefin resin laminated material, wherein at least one outermost layer is made of the above-mentioned polypropylene film. The laminate has a good balance between tensile modulus and heat sealing temperature, is less tacky, and has excellent slip and antiblock properties.

Description

technical field [0001] The present invention relates to a new polypropylene film which can be used as a substitute for flexible vinyl chloride film. More precisely, the present invention relates to a new polypropylene-based film that is less tacky, has a good balance between tensile modulus and heat-sealing temperature, and has excellent processability, transparency and impact resistance. In addition, the present invention also relates to a novel multi-layer polyolefin resin laminate, and more particularly, to a novel multi-layer polyolefin resin laminate, which is characterized in terms of tensile modulus and thermal Good balance between sealing temperature, less stickiness, and excellent slip and anti-blocking properties required for high-speed pouch formation. Background technique [0002] Vinyl chloride resin is widely used as a flexible resin. However, it is known that vinyl chloride resins generate harmful substances when burned. For this reason, there is an urgent...

Claims

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Application Information

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IPC IPC(8): B29D7/01B32B27/32C08F4/645C08F10/06C08F110/06C08J5/18
CPCB29D7/01B29K2023/12B32B27/32C08F10/06C08F110/06C08J5/18C08J2323/10Y10T428/2839Y10T428/2835Y10T428/31913Y10T428/31938C08F2500/17C08F2500/03C08F2500/20C08F2500/15C08F2500/26B32B2307/704B32B27/08B32B2439/80B32B2439/70B32B2307/412B32B2323/10B32B2307/558
Inventor 南裕金丸正实船桥英雄
Owner IDEMITSU KOSAN CO LTD
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