Production of polyurethane foam of reduced tendency to form embers when burned
US4139501A · kind A · utility
29Cited by
11References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1977 |
| Grant date | Feb 13, 1979 |
| Priority date | — |
| Expiry date | Oct 19, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/3851
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Flexible polyurethane foam having reduced tendency to form burning embers when it is ignited and burned is provided by incorporating into the reaction mixture before foaming a derivative of melamine wherein one or more hydrogens have been replaced by hydroxymethyl and/or lower alkoxymethyl groups. In one embodiment, flexible polyurethane foams of increased flame retardance are also provided, by also incorporating a halogenated phosphorus ester into the reaction mixture before foaming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.