Cleaning compositions based on 1,1,1,2,2,4,4-heptafluorobutane and C.sub.1 -C.sub.3 alcohols
US5747437A · kind A · utility
2Cited by
15References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 30, 1996 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Oct 30, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D7/5081
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
To replace compositions based on CFC or CFHC in applications for cleaning solid surfaces (in particular defluxing), the invention proposes azeotropic or quasi-azeotropic compositions based on 1,1,1,2,2,4,4-heptafluorobutane and a C.sub.1 -C.sub.3 alcohol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.