CFC and HCFC-free rigid insulating foams having low-K factors and decreased flammability
US5384338A · kind A · utility
0Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1993 |
| Grant date | Jan 24, 1995 |
| Priority date | — |
| Expiry date | Oct 26, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Polyurethane/polyisocyanurate foams with low K-factors and enhanced flammability properties as measured by the Butler Chimney test are produced through the use of a blowing agent composition comprising aliphatic hydrocarbon and a fully halogenated brominated halocarbon is a mole ratio of from 10:1 to 1:2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.