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US 2014/0155503 A1Published application
Closed-Loop Recycled Polyurethane Foam, Methods Of Manufacture and Products Therefrom
AssigneeInternational Automotive Components Group North America, Inc.
InventorsRose Ann RYNTZ, Terrence Marsh McROBERTS
Life of this patent
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Abstract
The present disclosure relates to the production of molded products containing recycled content, and more particularly polyurethane foam which includes polyol recovered from chemical recycling of polyurethane foam scrap, which polyol has been treated to optimize viscosity and/or reactivity characteristics.
Claims17
-8. (canceled)
A method of forming a polyurethane foam utilizing closed-loop recycling of polyurethane foam scrap comprising:
- forming a recycled polyol by subjecting polyurethane foam scrap to glycolysis;
- adding at least a portion of said recycled polyol to a virgin polyol to produce a polyol blend, wherein said polyol blend comprises 65-95 parts by weight of a virgin polyol, 5-25 parts by weight of said recycled polyol and a viscosity reducer, wherein said polyol blend has a viscosity in a range of 1,100 to 1,300 cps at 20° C.;
- forming a polyurethane foam from said polyol blend, wherein said polyurethane foam is characterized by a gel time of 220 seconds or longer and/or a rise time of 345 seconds or longer;
- and
- producing said polyurethane foam scrap from said polyurethane foam.
2 more elements
Dependencies are inferred from the claim text.