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1. US20160304689 - Polyol composition for producing flexible polyurethane foam, flexible polyurethane foam, and method for producing flexible polyurethane foam

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[ EN ]

Claims

1. A polyurethane forming composition for producing a flexible polyurethane foam, the polyurethane forming composition containing a polyol component, an isocyanate component capable of reacting with the polyol component, a polyrotaxane, a medium capable of dissolving or dispersing the polyrotaxane, and a foaming agent,
wherein the polyrotaxane includes an axle molecule including hydroxyl group-containing cyclic molecules thereon in a skewered manner and stopper groups placed at both ends of the axle molecule.
2. The polyurethane forming composition according to claim 1, wherein the medium contains as a main ingredient a compound having a weight-average molecular weight of 100 or more.
3. The polyurethane forming composition according to claim 1, wherein the medium contains as a main ingredient a compound having one or two hydroxyl groups per molecule.
4. The polyurethane forming composition according to claim 1, wherein the medium is a surfactant.
5. The polyurethane forming composition according to claim 1, wherein the medium contains a polyoxyalkylene group-containing compound as a main ingredient.
6. A flexible polyurethane foam obtained by foaming and curing a composition, the composition including:
a polyol component;
an isocyanate component capable of reacting with the polyol component;
a polyrotaxane including an axle molecule including hydroxyl group-containing cyclic molecules thereon in a skewered manner and stopper groups placed at both ends of the axle molecule; and
a medium capable of dissolving or dispersing the polyrotaxane.
7. A method for producing a flexible polyurethane foam, comprising:
a first step of obtaining a solution in which a polyrotaxane is dissolved or dispersed in a medium;
a second step of obtaining a mixture liquid by mixing the solution obtained in the first step with a polyol component and an isocyanate component capable of reacting with the polyol component; and
a third step of foaming and curing the mixture liquid obtained in the second step,
wherein the polyrotaxane includes an axle molecule including hydroxyl group-containing cyclic molecules thereon in a skewered manner and stopper groups placed at both ends of the axle molecule.