Mitsui Chemicals, Inc.

Hiroshi Kanayama

Satoshi Yamasaki

Makoto Kajiura

Minoru Watanabe

Junji Saito

Daisuke Hasegawa

Hirofumi Morita

Hiroaki Tago

Toshihiro Tanaka

Hiroki Inoue

Hidetaka Honda

A polyurethane gel material includes an aliphatic polyisocyanate (A) having an average functionality of 2.3 or more and 3.2 or less, a polyol (B) having an average functionality of 2.0 or more and 2.3 or less, and a plasticizer (C) having an ester group. The aliphatic polyisocyanate (A) contains an isocyanurate derivative of an aliphatic diisocyanate and/or an alcoholic modified isocyanurate derivative of an aliphatic diisocyanate. The polyol (B) contains a polyoxyalkylene (carbon number of 2 to 3) polyol having an ethylene oxide content of 30% by mass or less, and/or a polytetramethylene ether glycol. The polyol (B) has an average hydroxyl value of 30 mgKOH/g or more and 70 mgKOH/g or less. A ratio of the plasticizer (C) per 100 parts by mass of the polyol component (B) is 50 parts by mass or more and 400 parts by mass or less.

Polyurethane gel material, polyurethane gel, pseudo-biomaterial, and producing method of polyurethane gel

The polyurethane resin composition contains, a polyisocyanate component containing p-MDI, a polyol component, an organic metal catalyst, and a reaction retardant represented by general formula (1) below, wherein the mole ratio of the reaction retardant relative to 1 mol of the organic metal catalyst is 0.50 or more and 2.50 or less. (in general formula (1), A represents an aliphatic ring or an aromatic ring, Rrepresents a hydrocarbon group composing ring A, Rrepresents an aliphatic hydrocarbon group bonded to ring A. Rrepresents a hydrogen atom or alkyl group bonded to nitrogen atom included in ring A. Rrepresents a hydrogen atom or carboxyl group bonded to ring A. m is 1 or 2, n is 0 or 1, and total of n and no is 2 or less.) 

Polyurethane resin composition, polyurethane resin, molded article, fiber reinforced plastic, and method for producing fiber reinforced plastic

A polyurethane resin is a reaction product of a polyisocyanate component containing a bis(isocyanatomethyl)cyclohexane with a macropolyol component having a number average molecular weight of above 400 and 5000 or less. The shore A hardness thereof is 80 or less, a temperature at which a storage elastic modulus E' thereof shows 1&#xd7;10Pa is 200&#xb0; C. or more, and a ratio (E&#x2032;/E&#x2032;) of a storage elastic modulus E&#x2032;at 150&#xb0; C. with respect to a storage elastic modulus E&#x2032;at 50&#xb0; C. is 0.1 or more and 1.4 or less.

Polyurethane resin, producing method of polyurethane resin, and molded article

A buffer material including a skinned polyurethane foam including a foam layer and a skin layer formed on the surface of the foam layer, wherein the skinned polyurethane foam essentially contains no silicone compound, the foam layer is polyurethane foam, the skin layer is a polyurethane resin layer produced by reaction of a skin-isocyanate component containing an aliphatic and/or an alicyclic polyisocyanate with a skin-active hydrogen group-containing component, the skin layer has a storage modulus at 23&#xb0; C. (E') of 1&#xd7;10Pa or more and 3&#xd7;10Pa or less, the foam layer has a storage modulus at 23&#xb0; C. (E&#x2032;) of 1&#xd7;10Pa or more and 5&#xd7;10Pa or less, and the ratio (E&#x2032;/E&#x2032;) of the storage modulus at 23&#xb0; C. (E&#x2032;) of the skin layer relative to the storage modulus at 23&#xb0; C. (E&#x2032;) of the foam layer is 10 or more and 500 or less.

Buffer material, buffer material for coating robot, robot with buffer material, and coating robot with buffer material

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Chiba, Japan

Hiroshi Kanayama