Hydrochlorofluorocarbon azeotropic or azeotropic-like mixture
US5607912A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1992 |
| Grant date | Mar 4, 1997 |
| Priority date | — |
| Expiry date | Sep 9, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23G5/02841
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A hydrochlorofluorocarbon azeotropic or azeotropic-like mixture comprising at least one member selected from the group consisting of hydrogen-containing fluoropropanes of the formula I: EQU CH.sub.a Cl.sub.b F.sub.c CF.sub.2 CH.sub.x Cl.sub.y F.sub.z (I) wherein a+b+c=3, x+y+z=3, a+x.gtoreq.1, b+y.gtoreq.1, and 0.ltoreq.a,b,c,x,y,z.ltoreq.3, and at least one member selected from the group of compounds II consisting of halogenated hydrocarbons having a boiling point of from 20.degree. to 85.degree. C. other than said hydrochlorofluoropropanes, hydrocarbons having a boiling point of from 20.degree. to 85.degree. C. and alcohols having from 1 to 4 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.