Aezotropic compositions of 1,1,1,4,4,4-hexafluorobutane and n-pentane and the use thereof in the production of foams
US5472989A · kind A · utility
2Cited by
15References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1995 |
| Grant date | Dec 5, 1995 |
| Priority date | — |
| Expiry date | Mar 24, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An azeotropic composition made up of from about 73 to about 87% by weight of 1,1,1,4,4,4-hexafluorobutane and from about 13 to about 27% by weight of n-pentane is used as a blowing agent in a process for the production of polyurethane foams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.