Flame resistant flexible polyurethane foam
US9822213B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 22, 2014 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Jul 22, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/0083
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of forming a flame resistant flexible polyurethane foam that has a V-0 rating, according to Underwriters Laboratories Standard 94 Flammability Test, includes forming a reaction mixture that has an isocyanate component and an isocyanate-reactive component, and the isocyanate-reactive component includes a polyol component. The isocyanate component includes at least 30 wt % of a biuret modified aromatic diisocyanate, based on a total weight of the isocyanate component, and an isocyanate index of the reaction mixture is less than 100. The polyol component includes at least 5 wt % of a filled polyether polyol and at least 65 wt % of one or more other polyols that are different from the filled polyether polyol, based on a total weight of the isocyanate-reactive component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.