Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and 2-methyl butane
US5562857A · kind A · utility
30Cited by
12References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1995 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Dec 22, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/91
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Azeotropic compositions made up of from about 65 to about 81% by weight of 1,1,1,3,3-pentafluoropropane and from about 19 to about 35% by weight of 2-methyl butane have been found to be particularly useful as blowing agents for the production of polyurethane foams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.