Polypropylene-based composite material

A composite material, polypropylene-based technology, applied in the field of polypropylene-based composite materials, can solve problems such as impact resistance limitation, and achieve the effect of improving impact strength performance, uniform dispersion, and excellent miscibility

Active Publication Date: 2021-12-14
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, depending on the usage environment, there are limitations in securing impact resistance, and there is a need to develop a polypropylene-based composite material that can overcome these limitations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0112] As a first method, the catalyst composition can be prepared by a production method comprising the steps of obtaining a mixture by contacting a transition metal compound represented by Formula 1 with a compound represented by Formula 2 or Formula 3; and adding to the mixture A step of adding a compound represented by Formula 4.

[0113] In addition, as the second method, the catalyst composition may be prepared by a method of contacting a transition metal compound represented by Formula 1 with a compound represented by Formula 4.

[0114]In the first method of the preparation method of the catalyst composition, the molar ratio of the transition metal compound represented by Formula 1 to the transition metal compound represented by Formula 2 / the compound represented by Formula 2 or Formula 3 may be 1 / 5,000 to 1 / 2, specifically 1 / 1,000 to 1 / 10, more specifically 1 / 500 to 1 / 20. If the molar ratio of the transition metal compound represented by formula 1 / the compound repre...

preparation example 1

[0128] Catalyst Preparation Example 1: Preparation of Transition Metal Compound A

[0129]

[0130] (1) Preparation of 8-(2,3,4,5-tetramethyl-1,3-cyclopentadienyl)-1,2,3,4-tetrahydroquinoline

[0131] (i) Preparation of lithium carbamate

[0132] 1,2,3,4-Tetrahydroquinoline (13.08 g, 98.24 mmol) and diethyl ether (150 ml) were placed in a Schlank flask. The Schlenk flask was immersed in a -78 °C cryogenic bath obtained by dry ice and acetone and stirred for 30 min. Then, n-BuLi (39.9 mL, 2.5M, 98.24 mmol) was injected via syringe under nitrogen atmosphere, and a pale yellow slurry was formed. Then, the flask was stirred for 2 hours, and the temperature of the flask was raised to room temperature while removing generated butane gas. Immerse the flask again in a cryogenic bath at -78 °C to lower the temperature, and inject CO 2 gas. By injecting carbon dioxide gas, the slurry disappeared into a clear solution. The flask was connected to a bubbler and the temperature was...

preparation example 2

[0148] Catalyst Preparation Example 2: Preparation of Transition Metal Compound B

[0149]

[0150] (1) Preparation of 2-methyl-7-(2,3,4,5-tetramethyl-1,3-cyclopentadienyl)indoline

[0151] 2-Methyl-7-(2,3,4,5-tetramethyl-1,3-cyclopentadienyl)indoline was prepared by the same method as (1) of Preparation Example 1, the difference That is, in (1) of Preparation Example 1, 2-methylindoline was used instead of 1,2,3,4-tetrahydroquinoline. The yield was 19%.

[0152] 1 H NMR (C 6 D. 6 ): δ6.97(d, J=7.2Hz, 1H, CH), δ6.78(d, J=8Hz, 1H, CH), δ6.67(t, J=7.4Hz, 1H, CH), δ3 .94(m, 1H, quinoline-CH), δ3.51(br s, 1H, NH), δ3.24-3.08(m, 2H, quinoline-CH 2 ,Cp-CH), δ2.65(m,1H,quinoline-CH 2 ), δ1.89(s,3H,Cp-CH 3 ), δ1.84(s,3H,Cp-CH 3 ), δ1.82(s,3H,Cp-CH 3 ), δ1.13 (d, J=6Hz, 3H, quinoline-CH 3 ), δ0.93(3H,Cp-CH 3 )ppm.

[0153] (2) Preparation of [(2-methylindoline-7-yl)tetramethylcyclopentadienyl-η5,κ-N]dimethyltitanium

[0154] (i) Obtain the dilithium salt compound (comp...

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Abstract

The present invention relates to a polypropylene-based composite material comprising: (A) polypropylene; and (B) an olefin-based polymer satisfying the requirements of: (1) a melt index (MI, 190 DEG C and 2.16 kg load conditions) of 0.1-10.0 g / 10 min; (2) a melting temperature of 20-70 DEG C as measured by differential scanning calorimetry (DSC); and (3) high-temperature melting peaks being confirmed at 75-150 DEG C, as measured by a differential scanning calorimetry precision measurement method (SSA), in which the sum of melting enthalpies, DeltaH (75), in the corresponding region is 1.0 J / g or more. The polypropylene-based composite material of the present invention can exhibit excellent impact strength.

Description

technical field [0001] [Cross Reference to Related Application] [0002] This application claims the benefit of Korean Patent Application No. 10-2019-0121151 filed with the Korean Intellectual Property Office on September 30, 2019, the contents of which are incorporated herein by reference. [0003] The present invention relates to a polypropylene-based composite material, and more particularly to a polypropylene having improved impact strength and mechanical properties by including a low-density olefin-based polymer incorporating highly crystalline regions and exhibiting high mechanical rigidity base composite material. Background technique [0004] Generally, as a composition for automotive interior and exterior material parts, a polypropylene resin composition containing polypropylene (PP) as a main component, an impact reinforcing agent, and an inorganic filler has been used. [0005] Until the mid-1990s, ethylene-propylene rubber (EPR) or ethylene-propylene-diene rubb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/16C08F210/08C08F4/6592C08L23/14C08L23/20C08L23/08
CPCC08F210/16C08F210/08C08L23/14C08F4/6592C08L23/20C08L23/0815C08L23/12C08F2420/02C08F4/65912C08F4/65908C08K3/346C08F2500/12C08F2500/08C08F2500/03C08F2500/34C08F2500/02C08L23/16C08K3/34C08F110/06C08F210/14C08K3/013C08F2500/18C08F2/01C08F2/04
Inventor 朴仁成李银精朴想恩金太洙李忠勳孔镇衫全晸浩郭来根
Owner LG CHEM LTD
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