Kolon Industries, Inc.

Chung Seock Kang

Sang Min Song

Hyo Jun Park

Hyun Yeul Lee

Eun Jeong Cho

Hak Gee Jung

Joon Young Yoon

Jee Sung Yi

Hyun Jin Kim

Ji Sung Kim

Kyung Nam Kim

Sang Kyun Kim

Jeong Han Kim

Hyun Soo Lee

Kyung Keun Yoon

Soo Kang Kim

Ki Nam Kwak

Chang Pyo Hong

Young Seo Yoon

Young Sung Suh

Jong Min Park

Jae Gook Han

Chae Hyun Lim

Hyun Jung Kim

Hyun Chul Lee

Jong Han Kim

An intermediate material of a thermoplastic prepreg for a fuel cell separation plate comprises a hydrophobic thermoplastic resin film and a fiber base. The hydrophobic thermoplastic resin film has a degree of crystallization of 1 to 20%, a thickness of 3 to 50 &#x3bc;m, and (iii) a content of an electroconductive material of 1 to 20 wt. %. The film is laminated on at least one surface of the fiber base. The thermoplastic prepreg for a fuel cell separation plate is manufactured by pressurizing the thermoplastic prepreg intermediate material at a temperature higher than the melting point of the hydrophobic thermoplastic resin film. A fuel cell separation membrane manufactured using the thermoplastic prepreg intermediate material and thermoplastic prepreg is thin and light-weight, and have a good durability.

Thermoplastic prepreg intermediate material for fuel cell separation plate and method for manufacturing thermoplastic prepreg for fuel cell separation plate by using same

A method for preparing a high quality thermoplastic prepreg, includes: laminating a thermoplastic resin film having a crystallization degree in a range of 1 to 20% on at least one surface of a matrix fiber; and heating the laminate to a higher temperature than a melting point of the film, then, pressing the same. The method uniformly impregnates a matrix fiber with a thermoplastic resin, has a short curing cycle in the formation, and involves no random modification in alignment of fibers in the matrix fiber due to a low crystallization degree of the impregnated thermoplastic resin, thereby increasing rigidity of a formed product and enabling reduction of thickness. Thus produced prepreg has a low weight variation per unit area.

Method for preparing thermoplastic prepreg and thermoplastic prepreg prepared thereby

Disclosed is a polyimide film, which is colorless and transparent, with superior mechanical properties and high thermal stability.

Polyimide film

Disclosed is a polyimide film, which is colorless and transparent, and which prevents the distortion of an image and exhibits excellent color reproducibility.

Disclosed is a condensing type optical sheet for use in a liquid crystal display, which prevents the generation of a yellow band or a rainbow phenomenon without using a protective sheet.

Condensing type optical sheet

Disclosed herein is a photosensitive resin composition which exhibits proper optical density and hydrophobicity when it is formed into a light-shielding film, and which is useful in preventing the color mixing or position deviation of color ink when the color ink is charged in a region defined by a light-shielding film.

Photosensitive resin composition

Disclosed is an optical sheet for use in liquid crystal displays, which simultaneously functions to uniformly diffuse light emitted from a light guide plate and a diffusion plate and to increase brightness, decreases the loss of light, and enables the fabrication of thinner liquid crystal displays.

Optical sheets

Disclosed is a method of manufacturing a conductive coating film having superior chemical resistance or solvent resistance and durability by chemically bonding a resin having an amine group (&#x2014;NH) with carbon nanotubes having a carboxyl group (&#x2014;COOH). The conductive material having high bondability with carbon nanotubes and superior electrical properties includes carbon nanotubes uniformly contained therein, and thus has appropriate surface resistivity, and thereby can be used for antistatic, electrostatic dissipation and electromagnetic shielding purposes and in transparent or opaque electrodes depending on the resistivity value.

Conductive material and manufacturing method thereof

Disclosed are an intermediate transfer belt for use in a laser printer, a fax machine and a copier, and a production method thereof. Specifically, an intermediate transfer belt including silicone modified polyimide resin and a production method thereof are provided, thereby realizing a monolayer intermediate transfer belt having excellent electrical properties, water repellency and heat dissipation properties and good mechanical strength. Further, even without the additional use of an adhesive layer for adhesion to a fluorine resin layer and fluorine resin, the intermediate transfer belt can exhibit satisfactory properties, and process efficiency can be maximized.

Growing community of inventors

Yongin-si, South Korea

Chung Seock Kang