Production of polyurethane foam of reduced tendency to form embers when burned
US4251635A · kind A · utility
13Cited by
8References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 19, 1979 |
| Grant date | Feb 17, 1981 |
| Priority date | — |
| Expiry date | Sep 19, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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 ketone or benzaldehyde. In a preferred embodiment, flexible polyurethane foam of increased flame retardance is provided by also incorporating a flame retardant into the reaction mixture before foaming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.