Lg Chem, Ltd

Seong Min Chae

Kyung Seop Noh

Heekwang Park

Taejin Kim

Jihwa Ye

Hyunsup Lee

Sang Jin Jeon

Sangjin Jeon

Seok Hwan Kim

Hee Kwang Park

Daeyeon Lee

Dae Sik Hong

Ha Na Park

In Yong Jung

Ki Soo Lee

Heon Yong Kwon

Byung Seok Kim

Hye Kyung Lee

Myunghan Lee

Churl Young Park

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 disclosure relates to a polypropylene for injection having a high content of ultra-high molecular weight and excellent rigidity, and a method for preparing the same.

Polypropylene 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.

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

A homopolypropylene has i) a molecular weight distribution of less than 2.4; ii) a melt index (measured at 230&#xb0; C. under a load of 2.16 kg in accordance with ASTM D1238) of 5 to 3000 g/10 min; iii) a remaining stress ratio of 0.5% or less; and iv) a complex viscosity of 5 to 600 Pa&#xb7;s at an angular frequency of 1 rad/s and a complex viscosity of 5 to 300 Pa&#xb7;s at an angular frequency of 100 rad/s. A method for preparing the homopolyproylene is also provided. A molded article and a non-woven fabric are also provided.

Homopolypropylene and method for 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.

Growing community of inventors

Daejeon, South Korea

Seong Min Chae