Mitsui Chemicals, Inc.

Mitsui Chemicals & Skc Polyurethanes Inc.

Shinsuke Matsumoto

Tsukuru Izukawa

Atsushi Miyata

Tamotsu Kunihiro

Ariko Nishikawa

Mikio Matsufuji

Satoshi Yamasaki

Kazuhiko Ohkubo

Masahiro Isobe

Tomoki Tsutsui

Kazuhiko Okubo

Fumio Yamazaki

Toru Hiraide

Yasunori Hara

Usaji Takaki

Tadahito Nobori

Nobuhito Koga

Satoshi Tamura

Kaoru Ueno

Koichi Sano

Yusuke Maruoka

Hitoshi Watanabe

Masaaki Aoki

Kanae Morishita

This invention relates to a preparation for a polyurethane foam and a polymer polyol preparation for a polyurethane foam, each of which exhibits high coloration and discoloration inhibition properties over a long period of time when stored, and to a composition for a polyurethane foam, which is excellent in storage stability and is preferable as a resin premix. The composition comprises (i) at least one polyol, (ii) a compound having a P&#x2550;N bond, (iii) an antioxidant having a hydroxyphenyl group, (iv) at least an acid and/or its salt, (v) a catalyst for polyurethane foam production and (vi) a blowing agent.

Composition for polyurethane foam, preparation for polyurethane foam, polymer polyol preparation for polyurethane foam, production processes therefor, and polyurethane foam

The present invention provides a polyester polyol, preferably a plant-derived polyester polyol, suitable for a composition for polyurethane foam that contributes to the reduction of load on the environment and has a good balance of high resilience, moderate hardness, and high durability as a cushioning material for vehicle seat cushions. A polyester polyol having a hydroxyl value in the range of 15 to 100 mgKOH/g according to the present invention is produced by a condensation of raw materials comprising at least one selected from the group consisting of fatty acids having a hydroxy group and fatty acid esters having a hydroxy group with a polyhydric alcohol having an average number of functional groups of more than three but not more than eight. The raw materials contain 90% to 100% by mass of a fatty acid having a hydroxy group and a fatty acid ester having a hydroxy group in total.

Polyester polyol, composition for polyurethane, composition for polyurethane foam, polyurethane resin, and polyurethane foam

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

Highly-functionalized, low-viscosity polyether polyols are obtained by dehydration condensation reaction of alcohols. The polyether polyols are obtained by dehydration condensation of glycerin and monohydric and/or dihydric alcohol with the glycerin percentage being more than 50 mol % relative to 100 mol % of the total of the glycerin and alcohol. The glycerin may be crude glycerin obtained by hydrolysis or alcoholysis of natural fat and oils.

Polyether polyol, rigid polyurethane foam and processes for production thereof

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

A polymer dispersed polyol having a vinyl polymer dispersed in polyol, the vinyl polymer comprising containing 5 to 80 wt % of acrylamide compound (A) represented by the formula (1):

Polymer polyol and flame retardant polyurethane resin and foam prepared

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Ichihara, Japan

Shinsuke Matsumoto