Polyoxyalkylene polyols, derivatives thereof, and process for producing the polyoxyalkylene polyols

US6207794A · kind A · utility

Assignee

• MITSUI CHEMICALS, INC. · JP

Inventors

• Satoshi Yamasaki · Chiba, JP
• Yasunori Hara · Miyoshi, JP
• Satoshi Tamura · Miyoshi, JP
• Fumio Yamazaki · Tokyo, JP
• Hitoshi Watanabe · Hamamatsu, JP
• Mikio Matsufuji · Miyoshi, JP
• Shinsuke Matsumoto · Ebeye, US
• Ariko Nishikawa · Ebeye, US
• Tsukuru Izukawa · Ebeye, US
• Masaaki Aoki · Yokohama, JP
• Tadahito Nobori · Yokohama, JP
• Usaji Takaki · Fujisawa, JP

Key dates

• Filing date: Dec 17, 1998
• Grant date: Mar 27, 2001
• Expiry date: Dec 17, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/2675
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention is a polyoxyalkylene polyol, its manufacture method, and derivatives, wherein: it is obtained using a phosphazenium compound as a catalyst; the hydroxyl value is 2.about.200 mgKOH/g; total degree of unsaturation is 0.0001.about.0.07 meq./g; the head-to-tail bond selectivity of the polyoxyalkylene polyol is 95 mole %; and when the maximum height of the peak of GPC elution curve is set to be 100%, W.sub.20 is defined as the peak width at the 20% peak height, and W.sub.80 is defined as the peak width at 80% peak height, the ratio of W.sub.20 /W.sub.80 is 1.5 or greater, and less than 3.