Novel non ionic fluorinated compounds, their process of preparation and applications thereof as surfactants
US4859797A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 1987 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | May 6, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K23/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to non ionic fluorinated compounds having the formula R.sub.F C hd 2H.sub.4 S(R)H, wherein R designates a C.sub.2 H.sub.4 X unit with X=O or S, or a chain exclusively comprising several such units, and two consecutive units can be identical or different, and R.sub.F is a perfluorinated alkyl group exclusive of compounds having the formula: EQU R.sub.F C.sub.2 H.sub.4 SC.sub.2 H.sub.4 OH, R.sub.F C.sub.2 H.sub.4 S(C.sub.2 H.sub.4 O).sub.2 H and R.sub.F (C.sub.2 H.sub.4 S).sub.2 H and the mixtures of such compounds, in particular, the mixtures of the above defined products differing from one another by the length of their perfluorinated chain, but having the hydrophilic portion of the molecule identical from one product to the other. To obtain them, a compound having the formula R.sub.F C.sub.2 H.sub.4 SH is reacted on an ethylene or polyethylene glycol monochlorohydrin; the alcohol function of the resulting product is also converted to thiol function and then the so obtained product is reacted on such a monochlorohydrin and the resulting alcohol function is again transformed to thiol function, and so on, up to obtaining the desired number of C.sub.2 H.sub.4 O a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.