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Isao Hamana, Yoshio Fuziwara, Shiro Kumakawa: Process for spinning naphthalate polyester fibers. Teijin, Sherman & Shalloway, December 28, 1976: US04000239 (117 worldwide citation)

A filament, fiber or yarn consisting of a naphthalate polyester containing at least 85 mol % of ethylene-2,6-naphthalate units and having an intrinsic viscosity of 0.45 to 1.0, said filament, fiber or yarn having a diffrection intensity ratio (R) between a bragg refection angle 2.theta. = 187.7.degr ...


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Akiro Shimomai, Iwao Fujimoto, Isao Hamana, Kiyoji Katayama: Conjugate fiber, fibrous material and fibrous article made therefrom and process for production thereof. Teijin, Sherman & Shalloway, December 21, 1976: US03998988 (93 worldwide citation)

A conjugate fiber of a thermoplastic synthetic organic polymer composed of a high melting polymer component and a low melting polymer component, said low melting polymer component having a melting point at least 40.degree. C. lower than that of the high melting polymer component, and having adhered ...


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Hirofumi Yoshikawa, Isao Hamana, Shiro Kumakawa: Draw-texturing polyester yarns. Teijin, Sherman & Shalloway, August 31, 1976: US03977175 (17 worldwide citation)

Textured polyester yarn is prepared from multifilament yarn composed of a synthetic linear ethylene terephthalate polyester by draw-texturing at a draw ratio of 1.05 - 1.30X, using a heat-setting temperature of about 170.degree. - 240.degree.. Feed yarn for said draw-texturing process has (a) a brea ...


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Isao Hamana, Yoshio Fujiwara, Shiro Kumakawa: Novel naphthalate polyester fibers, and their end uses. Teijin, Sherman & Shalloway, January 4, 1977: US04001479 (4 worldwide citation)

A filament, fiber and yarn consisting of a naphthalate polyester containing at least 85 mol % of ethylene-2,6-naphthalate units and having an intrinsic viscosity of 0.3 to 1.0, said filament, fiber and yarn having a diffraction intensity ratio (R) between a Bragg reflection angle 2.THETA. = 18.7.deg ...


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