Tosoh Corporation

Keita Ishibashi

Naoya Yoshii

Hiroyuki Orito

Yoshihisa Okiyama

Junya Yamamoto

The present invention provides a polyol composition that can secure the stability over time even when a large amount of water is blended in the polyol composition; a flexible polyurethane foam that uses the polyol composition, is low in density and is excellent in durability; and a method for producing the same. The above objects are solved by a polyol composition for molding a flexible polyurethane foam, comprising a polyol component; a catalyst; a foam stabilizer; a foaming agent; and a compatibilizing agent, wherein the compatibilizing agent is an anionic surfactant which has a hydrophilic portion having an alkali metal salt, and which has a hydrophobic portion having an aromatic ring or alternatively a hydrophobic portion not having an aromatic ring but containing 8 or more carbon atoms in total.

Polyol composition for molding flexible polyurethane foam, and flexible polyurethane foam

Provided are: an isocyanate composition for producing a flexible foam that has good vibration absorption as a result of having a low rebound resilience rate and a low hysteresis loss rate even in a low-density area; a composition for forming a flexible foam in which the isocyanate composition is used; and a flexible foam production method in which the composition for forming a flexible foam is used. The composition for forming a flexible foam has a low hysteresis loss rate and high durability in, a high hardness range and in a low density range. The flexible foam production method uses this composition for forming a flexible foam. The flexible foam production method does not cause odor problems or the like, maintains the durability required of a flexible foam even when the density thereof is reduced, and achieves good riding comfort properties and high safety. The problem addressed by the present invention is solved by the use of at least a specific modified polyisocyanate composition, the use of a specific polyoxyalkylene polyol, and the use of a reactive amine catalyst.

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Yokohama, Japan

Keita Ishibashi