Lg Chem, Ltd

Kyung Seop Noh

Sang Jin Jeon

Seong Min Chae

Heekwang Park

Hee Kwang Park

Ji Ho Choi

Byung Seok Kim

Jihwa Ye

Hyunsup Lee

Sang Eun An

Churl Young Park

Ra Yun Choi

Ki Soo Lee

Hye Kyung Lee

Sangjin Jeon

Taejin Kim

In Sun Lee

Sang Hoon Lee

Jae Youp Cheong

Won-Sang Lee

Won Hee Kim

Jin Hyun Park

In Yong Jung

Daeyeon Lee

Ah Young Seo

Heon Yong Kwon

Seok Hwan Kim

Myunghan Lee

Ha Na Park

Changkwon Chung

According to this invention, there are provided powder type polypropylene resin wherein flowability in a hooper and feeding stability in the feeding zone of an extruder are improved through morphology optimization such as decrease in fine powder content, narrow particle size distribution, increase in average particle size, and high melting point, and the like, and a method for preparing the same.

Powder type polypropylene resin and method for preparing the same

The present disclosure relates to a polypropylene resin exhibiting excellent processability and capable of producing fine fibers, a polypropylene fiber including the same, and a method for preparing the same.

Polypropylene resin, polypropylene fiber and method for preparing the same

There are provided a pellet type polypropylene resin composition that exhibits excellent heat resistance and oxidation stability, and exhibits high flow without using a decomposition accelerator, and thus, can be used to prepare fine denier fiber, and a method for preparing the same.

Pellet-type polypropylene resin composition and method for preparing the same

The present invention relates to polypropylene non-woven fabric having excellent loft property, a method for preparing polypropylene non-woven fabric having excellent loft property, and a method for evaluating the properties of the polypropylene resin.

Method for evaluating properties of polypropylene resin, method for preparing polypropylene non-woven fabric, and polypropylene non-woven fabric

The polypropylene nonwoven fabric produced by the method for producing a polypropylene nonwoven fabric according to the present invention has features that it has excellent stretchability and excellent water pressure resistance.

Method for producing polypropylene nonwoven fabric

The present invention provides a polypropylene resin pellet that is environment friendly, has excellent workability, and enables preparation of fine denier fiber, and a method for preparing the same.

Polypropylene resin pellet and method for preparing the same

The present invention provides a resin composition for core-sheath type bi-component fiber that not only maintains excellent softness, but also improves tensile strength, when preparing non-woven fabric, particularly spunbond non-woven fabric.

Resin composition for bi-component fiber

The present invention provides a homopolypropylene having high strength and a low content of low molecular weights together with excellent processability, and a preparation method thereof.

Polypropylene and method for preparing the same

A propylene copolymer resin composition capable of improving softness while maintaining excellent strength properties when preparing nonwoven fabrics, and a method for preparing the same are provided. The propylene copolymer resin composition includes a propylene-ethylene copolymer having an ethylene content of 12 to 18 wt % in the propylene-ethylene copolymer and a propylene-1-butene random copolymer satisfying the following conditions (i) to (iv), wherein (i) 1-butene content of 1 to 5 wt % in the propylene-1-butene random copolymer, (ii) molecular weight distribution of 2.4 or less, (iii) storage modulus of 1200 MPa or less at 25&#xb0; C., and (iv) phase angle of 5.5&#xb0; to 8&#xb0; at a glass transition temperature, and wherein a weight ratio of the propylene-1-butene random copolymer to the propylene-ethylene copolymer is 80:20 to 99:1.

Propylene copolymer resin composition and method for preparing the same

Provided is a propylene random copolymer having excellent processability. The propylene random copolymer according to the present invention may exhibit high stiffness and flexural modulus together with a low shrinkage ratio, thereby being usefully applied to articles for thin wall injection molding.

Propylene random copolymer

The present invention relates to a propylene-butene copolymer resin composition used for non-woven fabric, a method of preparing the same, and spunbond non-woven fabric manufactured using the composition, and particularly, by optimizing a content of 1-buttene in a metallocene polypropylene resin composition to 0.5 to 5.0 wt %, while simultaneously optimizing both of a melt index and a residual stress ratio of the resin composition, has a merit of having a reduced modulus together with a high conversion rate to manufacture non-woven fabric which is softer than existing products while maintaining high strength.

Propylene-butene copolymer resin composition and method of preparing the same

The present invention relates to homopolypropylene resin for non-woven fabric, and according to the present invention, by optimizing tacticity to 80% to 90%, having narrow molecular weight distribution of 2.4 or less, and fulfilling melt index of 20 g/10 min to 30 g/10 min, melting point of 145&#xb0; C. or less, and residual stress rate of 0.05% or less, thereby optimizing modulus, high strength non-woven fabric that is softer than the existing products, and is not easily torn due to high tenacity, can be prepared.

Homopolypropylene resin for non-woven fabric and method for preparing the same

The polypropylene copolymer according to the present invention has a low melting point and also is excellent in the low temperature heat sealing effect, transparency and strength, and the film prepared therefrom can be effectively used as a sealing layer of the non-stretched polypropylene-based film.

Non-stretched polypropylene-based film

The present invention relates to a polypropylene having excellent stiffness and achieving energy reduction during foaming.

High-stiffness and energy-reducing polypropylene for foaming

The present invention provides a method for preparing an olefin polymer which can exhibit excellent isotacticity in a high yield and thus is suitable for use in reinforcing a long fiber, and a long fiber comprising an olefin polymer produced according to the above preparation method. In the preparation method, there can be provided an olefin polymer having excellent isotacticity in a high yield can be obtained by using a supported catalyst in which a transition metal compound having a specific structure is supported on a carrier together with two kinds of cocatalysts. In particular, the supported catalyst can exhibit high activity, excellent process stability and high hydrogen reactivity, thereby providing an olefin polymer having a high flow rate with a regular and excellent morphology. Such olefin polymer exhibits high processability while having excellent mechanical properties such as a tensile strength and a flexural strength, and thus are very useful as long fiber reinforced resins. They are used as long fiber reinforced resins and have an advantage in that total volatile organic compounds (TVOC) are significantly low as compared with those of general-purpose long fiber reinforced resins.

Growing community of inventors

Daejeon, South Korea

Kyung Seop Noh