Flame retardant polyurethane foam and method for producing same
US9908984B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2014 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Mar 5, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyurethane foam having an initial UL 94 vertical flame classification of V-0 and maintaining a UL 94 vertical flame classification of V-0 after one week of heat aging at 150° C. is formed as the reaction product of an isocyanate component and an isocyanate-reactive component in the presence of a blowing agent. The isocyanate component includes an isocyanate-containing compound and a non-reactive phosphorous compound that is present in an amount ranging from 1 to 20 weight percent based on the total weight of the polyurethane foam. The isocyanate-reactive component includes a polyether polyol and expandable graphite that is present in an amount ranging from 3 to 30 weight percent based on the total weight of the polyurethane foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.