Low-density polyurethane foam composition as sound-absorbing material having improved appearance formability, smell reduction and sound absorption performance, method for manufacturing polyurethane foam and polyurethane foam manufactured therefrom
US11746203B2 · kind B2 · utility
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Key dates
| Filing date | Aug 24, 2020 |
| Grant date | Sep 5, 2023 |
| Priority date | — |
| Expiry date | Aug 24, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are a polyurethane foam composition for sound-absorbing materials, a method for manufacturing a polyurethane foam and a polyurethane foam manufactured using the method. Particularly, disclosed are a composition containing a polyol mixture including a polyol and an additive, and isocyanate, and the manufacture of a low-density polyurethane foam for sound-absorbing materials, which is imparted with improved appearance formability, reduced smell and enhanced sound absorption performance by controlling the content of the composition and the conditions for foaming the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.