1
Seizo Kobayashi, Takashi Mizoe, Yoshimu Iwanami, Osamu Otsu, Shigeki Yokoyama, Kazuhiko Kurihara, Hiroshi Yazawa: Split polyethylene stretched material and process for producing the same. Nippon Oil, Nippon Petrochemicals, Polymer Processing Research Institute, Oblon Spivak McClelland Maier & Neustadt P C, November 26, 1996: US05578373 (38 worldwide citation)

The present invention provides a split polyethylene stretched material having a tensile strength of at least 0.7 GPa when twisted in the range of 50-500 times/m, which material is produced by subjecting a polyethylene having an intrinsic viscosity of 5-50 dl/g as measured at 135.degree. C. in decali ...


2
Seizo Kobayashi, Takashi Mizoe, Yoshimu Iwanami: Process for continuous production of polyolefin material. Nippon Oil, Oblon Spivak McClelland Maier & Neustadt, April 6, 1993: US05200129 (37 worldwide citation)

According to the present invention, a polyolefin sheet, film or fiber having a high strength and a high modulus can be continuously produced by:


3
Seizo Kobayashi, Takashi Mizoe, Yoshimu Iwanami, Shigeki Yokoyama, Kazuhiko Kurihara, Hiroshi Yazawa, Mihoko Okada: Process for the continuous production of high-strength and high-modulus polyethylene material. Nippon Oil, Petrochemicals Nippon, Polymer Processing Research Institute, Oblon Spivak McClelland Maier & Neustadt, April 21, 1992: US05106555 (37 worldwide citation)

A process is provided for the continuous production of a high-strength and high-modulus polyethylene material having excellent properties. According to the process, powder composed of ultra-high-molecular-weight polyethylene powder as a principal component is subjected to compression molding, rollin ...


4
Seizo Kobayashi, Takashi Mizoe, Yoshimu Iwanami: Continuous production process of high-strength and high-modulus polyolefin material. Nippon Oil, Oblon Spivak McClelland Maier & Neustadt, February 25, 1992: US05091133 (36 worldwide citation)

A high-strength and high-modulus polyolefin material can be continuously produced from a polyolefin in a powder form by feeding the polyolefin powder between a combination of endless belts disposed in an up-and-down opposing relation, compression-molding the polyolefin powder at a temperature lower ...


5
Akira Sano, Seizo Kobayashi, Kazuo Matsuura, Shigeki Yokoyama, Takeshi Kamiya: Process for the production of polyethylene materials. Nippon Oil, Finnegan Henderson Farabow Garrett, November 7, 1989: US04879076 (21 worldwide citation)

A process for producing polyethylene materials is disclosed in which particulate polyethylene is drawn at lower temperatures than its melting point, the polymer having an intrinsic viscosity of 5-50 dl/g at 135.degree. C. in decalin and resulting from the polymerization of ethylene at temperatures b ...


6
Seizo Kobayashi, Katumi Usui, Takashi Mizoe, Noboru Yamaoka, Kazuo Matsuura: Thermoplastic elastomer compositions. Nippon Oil Company, Dilworth & Barrese, April 18, 1989: US04822855 (19 worldwide citation)

A thermoplastic elastomer composition prepared by partially crosslinking a composition comprising the following components (A), (B) and (C):


7
Seizo Kobayashi, Toshiharu Hirayama, Takeshi Kamiya, Seiju Kezuka, Hidesuke Takeuchi: Method of manufacturing foamed thermoplastic resin profiles. Nippon Petrochemicals, Anthony J Casella, Joseph A Calvaruso, January 31, 1978: US04071591 (11 worldwide citation)

A method for producing foamed thermoplastic resin profiles with an outer skin layer of increased hardness and an inner foam structure which may be used in place of wooden articles. The outer skin has a smooth surface and a good appearance, and the inner portion enclosed by the skin has a uniform foa ...


8
Seizo Kobayashi, Takashi Mizoe, Yoshimu Iwanami, Shigeki Yokoyama, Keizi Jimbo: Laminate. Nippon Oil, Oblon Spivak McClelland Maier & Neustadt, August 29, 1995: US05445883 (11 worldwide citation)

An anisotropy-free laminate having much higher strength and stiffness as compared with conventional articles is here disclosed which can be prepared by laminating an orientated ultra-high-molecular-weight polyethylene onto an adhesive layer obtained by modifying an olefin polymer with an unsaturated ...


9
Seizo Kobayashi, Kazutosi Nomiyama, Yoshimu Iwanami, Sumio Yoshida, Kazuhiko Kurihara, Hiroshi Yazawa: Prepreg of ultra-high-molecular-weight polyethylene. Nippon Oil, Nippon Petrochemicals, Polymer Processing Research Institute, Oblon Spivak McClelland Maier & Neustadt P C, March 3, 1998: US05723388 (9 worldwide citation)

The present invention provides a prepreg obtained by stretching a material including, as a main component, an ultra-high-molecular-weight polyethylene having an intrinsic viscosity of 5-50 dl/g as measured at 135.degree. C. in decalin, to a total draw ratio of at least 20, subjecting the resulting s ...


10
Takeichi Shiraishi, Yoshiyuki Shimo, Seizo Kobayashi: Process for producing polyethylene material of high strength and high plastic modulus. Nippon Oil Company, Dilworth & Barrese, May 26, 1998: US05756660 (9 worldwide citation)

A polyethylene article such as film or fiber having high strength and high elastic modulus is produced by orienting an ultra-high molecular weight polyethylene having an intrinsic viscosity at 135.degree. C. in decalin of 5 to 50 dl/g, said ultra-high molecular weight polyethylene being prepared by ...