Azeotropic compositions of 1,1,1,4,4,4-hexafluorobutane and 2-methyl butane and the use thereof in the production of foams
US5532283A · kind A · utility
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14References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1995 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Mar 24, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D7/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Azeotropic compositions made up of from about 64 to about 80% by weight of 1,1,1,4,4,4-hexafluorobutane and from about 20 to about 36% 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.