Low density polyurethane foams
US9228047B2 · kind B2 · utility
1Cited by
7References
12Claims
0Family size
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Key dates
| Filing date | Feb 13, 2012 |
| Grant date | Jan 5, 2016 |
| Priority date | — |
| Expiry date | Oct 29, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/0083
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Embodiments of the invention provide for low density flexible polyurethane foams are reaction products of reaction systems including at least one polyol and at least one isocyanate including at least 50% by weight of an MDI based isocyanate. The flexible polyurethane foam has a density of less than about 33 kg/m3 as determined according to ASTM D 3574-01, a tear strength of more than about 160 N/m as determined according to NBR 8515:2003 and a resiliency of at least 45% as measured according to ASTM D-3574-H.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.