Blowing agents for isocyanurate foams and method for producing the same
US4898893A · kind A · utility
45Cited by
1References
29Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1988 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | Sep 20, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A blend of liquid hydrocarbon and halogenated aliphatic hydrocarbon is used as a blowing agent. The blowing agent is particularly useful to replace chlorofluorocarbons as blowing agents in isocyanate-based foams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.