Novel azeotropes and the use thereof in the production of rigid foams
US5102920A · kind A · utility
2Cited by
17References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1991 |
| Grant date | Apr 7, 1992 |
| Priority date | — |
| Expiry date | Sep 11, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/91
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a novel azeotrope consisting essentially of from 25 to 35% by weight of 2-methylbutane and from 65 to 75% by weight of 1,1-dichloro-1-fluorethane, and the use thereof in the production of rigid, closed cell foams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.