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US 4,304,872 AGranted
Flexible polyurethane foams having substantial number of cells with internal residual cell surface of 60 to 90 percent
AssigneeBP Chemicals Limited
InventorRudolf J. Tenhagen
Life of this patent
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Abstract
A novel flexible polyurethane foam has a substantial number of cells with an internal residual cell surface greater than 60% and less than 90%. The novel foams have improved vibration damping characteristics.
Claims7
A flexible polyurethane foam which has at least 50% of the cells with an internal residual cell surface greater than 60% and less than 90%.
Dependencies are inferred from the claim text.