Olefin polymer and fiber including same

A technology of olefin polymers and olefin monomers, applied in the direction of one-component polyolefin rayon, etc., can solve the problems of low strength and poor processability, and achieve the characteristics of narrow molecular weight distribution, high elongation and high strength Effect

Active Publication Date: 2012-04-18
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the molecular weight distribution of HDPE is too narrow, processability becomes extremely poor
[0007] For example, high-density polyethylene prepared by using general Ziegler-Natta catalysts, chromium catalysts, etc., has a molecular weight distribution of 7 or greater, although it has excellent processability but low strength, while using general metallocene catalysts High-density polyethylene, which has a molecular weight distribution of 3 or less and is poor in processability although it is excellent in strength
[0008] Therefore, for high-strength silk fiber products, there is a need for high-density polyethylene that can satisfy both mechanical physical properties and processability, and a catalyst capable of producing the polyethylene, etc., but there are few such technologies at present

Method used

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  • Olefin polymer and fiber including same
  • Olefin polymer and fiber including same
  • Olefin polymer and fiber including same

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0098] Furthermore, the method for producing an olefinic polymer according to the present invention is characterized by including the step of polymerizing an olefinic monomer in the presence of a supported metallocene catalyst.

[0099] In the preparation method of the olefin polymer of the present invention, the supported metallocene catalyst can be diluted to carbon such as isobutane, pentane, hexane, heptane, nonane, decane and their isomers. Aliphatic hydrocarbon solvents with 5 to 12 atoms; aromatic hydrocarbon solvents such as toluene and benzene; methylene chloride and chlorobenzene and other hydrocarbon solvents substituted by chlorine atoms, making it into a slurry form and then injecting. The solvent is preferably subjected to a small amount of aluminization treatment to remove small amounts of water, air, etc. that act as catalyst poisons.

[0100] One reactor or at least two identical or different reactors can be used to continuously supply olefinic monomers in a p...

preparation example 1

[0115] the preparation of metallocene catalyst-[tBu-O-(CH 2 ) 6 -C 5 h 4 ] 2 ZrCl 2 Synthesis

[0116] Using 6-chlorohexanol (6-chlorohexanol), prepare tert-butyl-O-(CH 2 ) 6 -Cl, which is then reacted with NaCp to obtain tert-butyl-O-(CH 2 ) 6 -C 5 h 5 (Yield 60%, b.p. 80°C / 0.1mmHg). Moreover, tert-butyl-O-(CH 2 ) 6 -C 5 h 5 Dissolve in THF, then slowly add n-butyllithium (n-BuLi), then raise the temperature to room temperature and react for 8 hours. At -78°C, to ZrCl 4 (THF) 2 (1.70g, 4.50mmol) / THF (30ml) suspension (suspension) solution was slowly added the synthesized lithium salt (lithium salt) solution, and then reacted at room temperature for another 6 hours. After vacuum drying all volatile materials, hexane solvent was added to the resulting oily liquid material and filtered. After vacuum drying the filtered solution, hexane was added and a precipitate was obtained at low temperature (-20°C). The resulting precipitate was filtered at low temperatu...

preparation example 2

[0119] the preparation of metallocene catalyst-[CH 3 (CH 2 ) 3 -C 5 h 4 ] 2 ZrCl 2 Synthesis

[0120] n-BuCp is prepared by reacting n-butylchloride and NaCp, and the n-BuCp is reacted with ZrCl 4 (THF) 2 react to produce [CH 3 (CH 2 ) 3 -C 5 h 4 ] 2 ZrCl 2 (Yield 50%).

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Abstract

The present invention relates to an olefin polymer and to a fiber including same. More specifically, an olefin polymer according to the present invention is characterized by: 1) a density of 0.94 to 0.96 g/cm3; 2) a melt index (MI: 190 DEG C, 2.16 kg) of 0.1 to 1.5 g/10 min; and 3) a molecular weight distribution (PDI; Mw/Mn) of 2 to 7; and in that the olefin polymer can be prepared by using a supported metallocene catalyst. A fiber which exhibits properties such as high elongation, high tenacity, etc., can be prepared from the olefin polymer according to the present invention.

Description

technical field [0001] The present invention relates to an olefinic polymer and fibers comprising the polymer from which fibers exhibiting high elongation and high strength properties can be produced. This application claims priority on the basis of Korean Patent Application No. 10-2009-0039586 filed with the Korean Intellectual Property Office on May 7, 2009, and the entire content thereof is incorporated herein by reference. Background technique [0002] Generally, high-density polyethylene (HDPE) refers to a density higher than 0.94g / cm 3 The polyethylene, which is different from the existing low-density polyethylene, can also be produced at low temperature and low pressure. [0003] The high-density polyethylene is different from paraffin wax in that it has a large molecular weight. The molecular weight of the paraffin wax is hundreds to thousands, while the molecular weight of the high-density polyethylene can be distributed in thousands to millions. The high-density ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/6592C08F20/00D01F6/04
CPCC08F2420/02C08F10/00C08F210/16D01F6/04C08F2420/01C08F110/02C08F4/6592C08F210/14C08F2500/07C08F2500/12C08F2500/03C08F210/08C08F2500/02
Inventor 赵峻熙赵永秦李秀正李琪树权宪容李龙湖金铜炫洪大植
Owner LG CHEM LTD
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