Surface demoisturizing composition and use thereof
US4594177A · kind A · utility
Inventors
Key dates
| Filing date | Feb 22, 1983 |
| Grant date | Jun 10, 1986 |
| Priority date | — |
| Expiry date | Feb 22, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B5/005
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Demoisturizing composition used for the displacement of liquid water, comprising a chlorofluorocarbon that is liquid at room temperature, containing a surface-active agent responding to the formula: ##STR1## in which R is an alkyl group in C.sub.6 -C.sub.18 PA1 R' is an alkyl group in C.sub.1 to C.sub.2 PA1 R" is an alkyl group in C.sub.1 to C.sub.18 PA1 p is a value ranging between 1 and 2 characterized in that the surface-active composition is prepared by mixing the following three constituents: ##STR2## where R.sub.F represents a straight or branched perfluorinated alkyl chain of formula C.sub.q F.sub.2q+1 in which q is a whole number ranging between 2 and 20 and where X is a divalent bond group that may be partially halogenated and R.sub.1 and R.sub.2 represent a hydrogen atom, an alkyl radical or a hydroxyalkyl radical, containing less than 6 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.