Mitsui Chemicals, Inc.

Mitsui Chemicals & Skc Polyurethanes Inc.

Mikio Matsufuji

Shinsuke Matsumoto

Satoshi Yamasaki

Tsukuru Izukawa

Tamotsu Kunihiro

Ariko Nishikawa

Fumio Yamazaki

Yasunori Hara

Tadahito Nobori

Usaji Takaki

Satoshi Tamura

Kazuhiko Ohkubo

Akihiro Imai

Masahiro Isobe

Kaoru Ueno

Atsushi Miyata

Hiroshi Kawasaki

Koichi Sano

Toru Hiraide

Hitoshi Watanabe

Kazuaki Imamura

Masaaki Aoki

Taiji Morimoto

Disclosed are a polyol with a molecular weight distribution Mw/Mn of 4 or more, obtained by reacting a compound comprising an alkylene oxide compound (II) having a hydroxyl group in a base polyol (I) with a molecular weight of 2000 or more; and a polyol composition for a flexible polyurethane foam, comprising a polyol compound and a crosslinker, wherein the crosslinker comprises a polyol (a) with a hydroxyl value of 50 to 1100 mgKOH/g and with a primary hydroxylate ratio of 25% or more and 60% or less, which is obtained by an addition of a compound comprising alkylene oxide compound (ii) having a hydroxyl group to active hydrogen compound (i).

Polyol, polyol composition, and flexible polyurethane foam using the same

A two-component curable solventless adhesive which enables a laminated composite film comprising a barrier layer and a plastic film laminated with each other to maintain excellent appearance and adhesive strength for a long period even after a sterilization treatment at high temperature, and to appropriately adjust a reaction between a base resin and a curing agent during a production of the laminated composite film. The two-component curable solventless adhesive comprises a base resin and a curing agent, wherein the base resin contains a polyol having an acid group and a secondary or tertiary terminal hydroxyl group accounting for 30% or more of the entire terminal hydroxyl groups of the polyol, and the curing agent contains an isocyanate group-terminated urethane prepolymer containing at least an aralkyl polyisocyanate and/or a modified substance thereof as a raw polyisocyanate, and a content of a low molecular weight polyisocyanate is defined.

Two-component curable solventless adhesive

The object is to provide a method for producing a polyoxyalkylene polyol and a method for producing a derivative thereof wherein the remaining catalyst compound is efficiently removed from a crude polyoxyalkylene polyol by a simple manner, and a method for producing a polyoxyalkylene polyol wherein a crude polyoxyalkylene polyol is produced by addition polymerization of an epoxide compound to an active hydrogen compound using as a catalyst a compound having a P&boxH;N bond, then, the crude polyoxyalkylene polyol is allowed to contact with a solid acid having a specific surface area of 450 to 1200 m /g and an average pore diameter of 40 to 100 &angst; to control the catalyst-remaining amount in the polyoxyalkylene polyol to 150 ppm or less, and a method for producing a derivative of the-above-described polyol are provided.

Method for producing polyoxyalkylene polyol and derivatives thereof

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&tilde;200 mgKOH/g; total degree of unsaturation is 0.0001&tilde;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,is defined as the peak width at the 20% peak height, and W,is defined as the peak width at 80% peak height, the ratio of W,/W,is 1.5 or greater, and less than 3.

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

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Sodegaura, Japan

Mikio Matsufuji