Kuraray Co., Ltd.

Tatuya Oshita

Koji Hirai

Michihiro Ishiguro

Kimio Nakayama

Shigeaki Suzuki

Noriaki Yoshimura

Yukiatsu Komiya

Katsura Maeda

Setuo Yamashita

Hiroyuki Ono

Thermoplastic polyurethane composition

A polyurethane made of polyester diol units, organic diisocyanate units and units from a chain extender, wherein the polyester diol units contain dicarboxylic acid units and diol units, wherein at least 30 mole % of the dicarboxylic acid units are units derived from 3,8-dimethyldecanedioic acid, 3,7-dimethyldecanedioic acid or a mixture thereof, and wherein the polyester diol units have a number-average molecular weight in a range from 500 to 6000 is provided along with the polyester diol for preparing the polyurethane, polyurethane fibers prepared from the polyurethane, a molded article prepared from the polyurethane and processes for producing the polyurethane, polyester diol, dimethyldecanedioic acids and dimethyldecanedials used to prepare the dimethyldecanedioic acids; where the polyurethane and fibers produced therefrom are superior in various properties such as hydrolytic resistance, heat resistance, resistance to hot water, cold resistance, fungal resistance and mechanical performances e.g., strength at break and elongation at break, as well as injection moldability and the fibers are dyeable under high-temperature and high-pressure conditions and are superior, after dyeing, in tensile strength and elongation, elastic recovery, fungal resistance, resistance to chlorine and color fastness.

Polyurethane and molded article comprising the same

Elastic polyurethane fiber

Growing community of inventors

Kurashiki, Japan

Tatuya Oshita