Method of removing oily substances with hydrogen-terminated fluoropolyethers
US5780414A · kind A · utility
3Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1997 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | Mar 5, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D7/5018
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Use of solvents capable of removing oily substances without solubilizing them, consisting of hydrofluoropolyethers having the general formula EQU HF.sub.2 CO (CF.sub.2 O).sub.n (CF.sub.2 CF.sub.2 O).sub.m CF.sub.2 H wherein n and m are integers comprised between 0 and 20, excluding when m and n are contemporaneously 0, and having boiling point from 30.degree. to 200.degree. C. and having a molar ratio 0/C comprised between 0.5-1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.