Flexible polyurethane foam having a low flame spread index
US4232085A · kind A · utility
7Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1979 |
| Grant date | Nov 4, 1980 |
| Priority date | — |
| Expiry date | Aug 14, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249989
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A flexible polyurethane foam having a low flame spread index is produced by combining polyol (preponderantly diol and/or triol) with polyisocyanate (preponderantly diisocyanate) in the presence of a foaming catalyst and a blowing agent. By combining at least 75% by weight of pentabromoethyl benzene, based upon the weight of the polyol, a flame spread index less than 150 can be achieved for the resulting foam in the ASTM test E-162-76. Significantly, polyurethane foams having a flame spread index less than 25 have been produced with this invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.