Propylene polymer composition and use thereof

A technology of polymer and composition, applied in the field of propylene polymer composition, can solve the problems of lack of transparency, high price, application limitation, etc., and achieve a well-balanced and excellent effect

Active Publication Date: 2009-02-11
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this situation, although the thermoplastic polyolefin elastomer commonly known as TPO has excellent flexibility, it has no transparency, and the series of styrene-based elastomers are added to PP (such as Japanese Patent Laid-Open No. 7- 048485 bulletin) is soft and transparent, but its use is limited due to its high price

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0142] Hereinafter, the present invention will be more specifically described based on examples, but the present invention is not limited by these examples.

[0143] The physical property test conditions and the like are as follows.

[0144] [Dynamic viscoelasticity measurement]

[0145]Using RDS-II manufactured by Rheometric Co., Ltd., under the torsion (torsion) mode between the width of 10 mm and the length of 38 mm, the measurement was performed at -100 ° C to 100 ° C at a temperature increase rate of 2 ° C / min and 10 rad / s, and each was obtained. Loss tangent tanδ and storage elastic modulus G'value at temperature.

[0146] [Stretching test]

[0147] Residual strain:

[0148] A dumbbell plate with a length of 50 mm, a length between the marked lines (L0) of 30 mm, and a shape of a width of 5 mm and a thickness of 1 mmt is applied to a 100% (until the distance between the clamps is 60 mm) strain at a distance of 30 mm between the clamps and a tensile speed of 30 mm / ...

Synthetic example 1

[0165] (Synthesis of Propylene-Ethylene-Butene Copolymer) (ii-1)

[0166] In a 2000ml polymerization apparatus fully replaced by nitrogen, 917ml of dry hexane, 85g of 1-butene, and triisobutylaluminum (1.0mmol) were added at room temperature, and the inner temperature of the polymerization apparatus was raised to 65°C, and The pressure in the system was increased to 0.77 MPa with propylene, and then the pressure in the system was adjusted to 0.78 MPa with ethylene. Next, 0.002 mmol of dimethylmethylene (3-tert-butyl-5-methylcyclopentadienyl) fluorenyl zirconium dichloride and 0.6 mmol of methyl aluminum oxide in terms of aluminum atoms were mixed. The toluene solution contacted with alkanes (manufactured by Tosoh Finechem Corporation) was added to the polymerizer, and polymerization was carried out for 20 minutes while the internal temperature was 65°C and the system pressure was maintained at 0.78 MPa by ethylene, and 20 ml of methanol was added to stop the polymerization rea...

Synthetic example 2

[0168] (Synthesis of Propylene-Ethylene-Butene Copolymer) (ii-2)

[0169] After adding 833ml of dry hexane, 200g of 1-butene, and triisobutylaluminum (1.0mmol) at room temperature to a 2000ml polymerization apparatus fully replaced by nitrogen, the internal temperature of the polymerization apparatus was raised to 40°C, and the Propylene increases the pressure in the system to 0.77MPa, and then uses ethylene to adjust the pressure in the system to 0.8MPa. Next, 0.001 mmol of dimethylmethylene (3-tert-butyl-5-methylcyclopentadienyl) fluorenyl zirconium dichloride and 0.3 mmol of methyl aluminum oxide in terms of aluminum atoms were mixed. The toluene solution contacted with alkanes (manufactured by Tosoh Finechem Corporation) was added into the polymerizer, and the polymerization was carried out for 20 minutes at an internal temperature of 40° C. and the internal pressure of the system was maintained at 0.8 MPa by ethylene, and 20 ml of methanol was added to stop the polymeriza...

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PUM

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Abstract

A propylene polymer composition is disclosed which is excellent in transparency, flexibility, heat resistance, scratch resistance and rubber elasticity in a balanced manner. The propylene polymer composition is characterized by comprising 1-40 parts by weight of an isotactic polypropylene (i) and 60-99 parts by weight of a propylene / ethylene / alpha-olefin copolymer (ii) which contains 45-98 mol% of propylene component, 10-25 mol% of ethylene component, and if necessary 0-30 mol% of a component unit (a) derived from alpha-olefin having 4-20 carbon atoms.

Description

technical field [0001] The present invention relates to a propylene-based polymer composition, and specifically to a propylene-based polymer composition having excellent transparency, flexibility, scratch resistance, heat resistance, and rubber elasticity. Background technique [0002] Polypropylenes are widely used in automotive materials, home appliance materials, and the like because they are inexpensive and excellent in rigidity, moisture resistance, and heat resistance. On the other hand, in consideration of environmental hormones and dioxin problems, polyolefins having flexibility and transparency are desired in the trend toward the removal of flexible vinyl chloride. In this situation, although the thermoplastic polyolefin elastomer commonly known as TPO has excellent flexibility, it has no transparency, and the series of styrene-based elastomers are added to PP (such as Japanese Patent Laid-Open No. 7- 048485 bulletin) is soft and transparent, but its use is limited...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16
Inventor 森亮二中川贵藤堂昭
Owner MITSUI CHEM INC
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