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Polypropylene-based composite material

A composite material, polypropylene technology, applied in the field of polypropylene composite materials, to achieve the effect of improving impact strength properties, excellent miscibility, and uniform dispersion

Active Publication Date: 2021-12-31
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, there are limitations in securing impact resistance depending on the application environment, and development of polypropylene-based composite materials that can overcome such limitations is required

Method used

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Experimental program
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Effect test

preparation example Construction

[0059] In particular, the olefin-based copolymer of the present invention can be obtained by a production method comprising making the olefin-based monomer aggregation steps.

[0060] However, in the preparation of the olefin-based polymer according to the embodiment of the present invention, it should be understood that the range of the structure of the transition metal compound of formula 1 is not limited to the specifically disclosed type, but includes within the spirit and technical scope of the present invention including All variations, equivalents or substitutions of .

[0061] [Formula 1]

[0062]

[0063] In formula 1,

[0064] R 1 The groups are the same or different and are independently hydrogen, alkyl of 1 to 20 carbon atoms, alkenyl of 2 to 20 carbon atoms, aryl, silyl, alkylaryl, arylalkyl or substituted a metalloid group of a Group 4 metal having a hydrocarbyl group, and two R 1 The groups may be linked to each other via an alkylidene group containing a...

preparation example 1

[0132] Catalyst Preparation Example 1: Preparation of Transition Metal Compound A

[0133]

[0134] (1) Preparation of 8-(2,3,4,5-tetramethyl-1,3-cyclopentadienyl)-1,2,3,4-tetrahydroquinoline

[0135] (i) Preparation of lithium carbamate

[0136] 1,2,3,4-Tetrahydroquinoline (13.08 g, 98.24 mmol) and diethyl ether (150 mL) were placed in a shlenk flask. The shlenk flask was immersed in a -78 °C cryogenic bath obtained from dry ice and acetone and stirred for 30 min. Then, n-BuLi (39.9 mL, 2.5 M, 98.24 mmol) was injected via syringe under nitrogen atmosphere, forming a pale yellow slurry. 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. With the injection of carbon dioxide gas, the slurry disappeared into a clear solution. The flask was connected to a bubbler and the temperature ...

preparation example 2

[0152] Catalyst Preparation Example 2: Preparation of Transition Metal Compound B

[0153]

[0154] (1) Preparation of 2-methyl-7-(2,3,4,5-tetramethyl-1,3-cyclopentadienyl)indoline

[0155] 2-Methyl-7-(2,3,4,5-tetramethyl-1,3-cyclopentadienyl)indoline was prepared by the same method as (1) of Preparation Example 1, except The point is that 2-methylindoline is used instead of 1,2,3,4-tetrahydroquinoline in (1) of Preparation Example 1. The yield was 19%.

[0156] 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.

[0157] (2) [(2-methylindolin-7-yl) tetramethylcyclopentadienyl-η 5 , Preparation of κ-N]Dimethyltitanium

[0158] (i) Obtain the dilithium salt compo...

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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 thermal capacities, 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. 10-2019-0121150 filed with the Korean Intellectual Property Office on September 30, 2019, the contents of which are hereby incorporated by reference. [technical field] [0003] The present invention relates to polypropylene-based composites, and more particularly, to polypropylene-based composites having improved impact strength and mechanical properties by including low-density olefin-based polymers that introduce highly crystalline regions and exhibit high mechanical rigidity. Background technique [0004] Generally, as a composition for automotive interior and exterior material parts, a polypropylene resin composition comprising main components polypropylene (PP), an impact reinforcing agent, and an inorganic filler is used. [0005] Until the mid-1990s, until the development of ethylene-α-olefin copolymers obtained by polymeriza...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/20C08K3/34
CPCC08L23/14C08L23/20C08K3/34C08L23/12C08F210/16C08F4/65912C08F4/65908C08F2420/02C08F4/6592C08F210/08C08F2500/12C08F2500/03C08F2500/34C08F2500/31C08F2/06C08L23/16C08L23/0815C08F110/06C08F210/14C08F4/65922C08F2/001C08F2/01C08F2/04C08K3/013C08L2314/06C08K2201/005
Inventor 朴想恩李银精朴仁成金太洙李忠勳孔镇衫全晸浩郭来根
Owner LG CHEM LTD
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