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US 2026/0226223 A1Published application
Polyurethane foam and cushioning material
AssigneesInoac Corporation, Inoac Slimflex Co., Ltd.
InventorsTakuya KIRIYAMA, Eiji KARIYA, Ayaka ORIKASA
Life of this patent
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Abstract
A polyurethane foam containing a polyol as a raw material, in which the polyol includes a castor oil-based polyol, and the total EO content of the polyol is 10.0 mass % or less. The polyurethane foam preferably has a Gurley air permeability of 3.0 seconds or more. The polyurethane foam preferably has a compression set at 100° C. of 10.0% or less. The cushioning material includes such a polyurethane foam and is used around the battery.
Claims12
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A polyurethane foam obtained by reacting a raw material mixture containing a polyol, wherein:
- the polyurethane foam is formed of a product obtained by reacting the raw material mixture using a mechanical froth method;
- the polyol:
- contains a castor oil-based polyol and a low molecular weight polyol,
- has a total EO content of 10.0 mass % or less, and
- has a content of the low molecular weight polyol of 1.0 mass % or more and 4.0 mass % or less;
- the “low molecular weight polyol” refers to a compound having:
- (a) a hydroxyl value exceeding 800 mgKOH/g, and
- (b) a functionality of 2 or more;
- and
- the “content of the low molecular weight polyol” refers to a ratio of a mass of the low molecular weight polyol to a total mass of the polyol.
7 more elements
Dependencies are inferred from the claim text.