Polyurethane filter foam
US10077331B2 · kind B2 · utility
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6Claims
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Assignee
Inventors
Key dates
| Filing date | Dec 27, 2016 |
| Grant date | Sep 18, 2018 |
| Priority date | — |
| Expiry date | Dec 27, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/0083
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A polyurethane filter foam is provided herein. The polyurethane filter foam may have improved permeability by having both a small cell and a large cell in a range for maximizing the opening property of the foam. In some instance, this is achieved by specifically configuring and foaming a composition of polyether polyol and methylene diphenyl diisocyanate (MDI) to manufacture the polyurethane foam. The polyurethane foam of the present invention can be manufactured without performing a reticulation process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.