Process for producing flexible polyurethane foam
AssigneeVita International, Inc.
InventorsDavid SPITZER, David KÜHNEMANN, Manfred HOHENHORST, Sam HILL
Life of this patent
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Abstract
Process for preparing flexible polyurethane foam using sustainable polyols such as a biopolyol and a recycled polyol composition. The specific balance of biopolyol and recycled polyol composition enables large amounts of recycled polyol composition to be used in the production of the flexible polyurethane foam, whilst enabling a flexible polyurethane foam to be produced which has good properties and maintains its flexible foam structure. Also provided is a flexible polyurethane foam prepared by the process, a flexible polyurethane foam derived from specific sustainable polyols, and to a polyol composition for preparing a flexible polyurethane foam.
Claims16
A process for preparing flexible polyurethane foam comprising:
- mixing together a biopolyol, a recycled polyol composition, an isocyanate, a catalyst, water and optionally additives to form a mixture;
- foaming the mixture to form a foamed mixture;
- and
- curing the foamed mixture;
- wherein the ratio of biopolyol to recycled polyol composition is from about 65:35 to about 5:95.
A flexible polyurethane foam derived from a biopolyol, a recycled polyol composition, and an isocyanate, wherein the ratio of biopolyol to recycled polyol composition is from about 65:35 to about 5:95.
A polyol composition for preparing a flexible polyurethane foam, the polyol composition comprising;
- 5-65 parts biopolyol;
- 35-95 parts recycled polyol composition;
- and
- 0-5 parts fossil based polyol.
- wherein the total amount of polyol (recycled polyol composition, biopolyol, and fossil based polyol) is 100 parts.
Dependencies are inferred from the claim text.