Sanyo Chemical Industries, Ltd.

Other

Matsushita Electric Industrial Co., Ltd.

Yukiya Kobayashi

Takayuki Tsuji

Shigekuni Nakada

Yoshinori Takamuku

Katsuya Uchida

Hideki Shimamoto

Hideo Seike

Minako Fujiyoshi

A polymer polyol (I) is provided that is formed of a polyol (A), polymer particles (B) obtained by polymerization of an ethylenically unsaturated compound (b), and an active-hydrogen-containing compound (d) having an aromatic ring and having a number-average molecular weight of 150 to 2,000, wherein a content of (d) is 1 to 20% on the basis of a weight of (B). The polymer polyol of the present invention contains polymer particles having sufficiently small particle diameters, has a low viscosity, and has excellent handleability. A polyurethane resin obtained by using the polymer polyol of the present invention has excellent mechanical strengths such as elongation at break.

Polymer polyol, method for producing the same, and method for producing polyurethane resin

A method for producing a fine-particle-dispersed polyol (I) is provided, the method including the steps (1) and (n&#x2212;1): the step (1) of polymerizing an ethylenically unsaturated monomer (b) in a polyol (a), in the presence of fine particles (P1) and a radical polymerization initiator (c), so as to obtain a fine-particle-dispersed polyol intermediate (B2); and the step (n&#x2212;1) of polymerizing (b) in a fine-particle-dispersed polyol intermediate (B(n&#x2212;1)), in the presence of (c), so as to obtain a fine-particle-dispersed polyol intermediate (Bn) or the fine-particle-dispersed polyol (I), where n represents an integer of 3 to 7, wherein (P1) have a volume-average particle diameter (R1) of 0.01 &#x3bc;m to 1.0 &#x3bc;m, and a concentration of (b) in the step (1) is 7 wt % to 40 wt %. Thus, a method for producing a fine-particle-dispersed polyol can be provided that contains polymer fine particles dispersed in a polyol having a small particle diameter, and that, when it is used for forming a polyurethane resin, allows the polyurethane resin to exhibit excellent resin properties.

Method for producing fine-particle-dispersed polyol, and method for producing polyurethane resin

The present invention is to provide The present invention uses 

Electrolyte for electrochemical capacitor and electrochemical capacitor containing the same

Electric double layer capacitors having improved stability of electrochemical properties and improved retention of residual voltage, imparted by using an electrolytic solution containing a polymer, such as acrylonitrile/stryrene copolymer, giving an increased electrolyte ion difusion resistance are provided. The capacitors are useful for electro-storage devices, such as back-up power source for real time clocks. The polymer is useful for suppressing self discharge in electronic components, such as electric double layer capacitor, aluminum electrolytic capacitors, electro-chemical capacitor and secondary batteries.

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Kyoto, Japan

Yukiya Kobayashi