Isopropylbenzene derivatives
US4350644A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1979 |
| Grant date | Sep 21, 1982 |
| Priority date | — |
| Expiry date | May 14, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Isopropylbenzene derivatives having the general formula: ##STR1## in which: R.sup.1 to R.sup.4 independently represent a hydrogen atom or a lower alkyl group having up to 4 carbon atoms, PA1 X.sup..crclbar. represents COO.sup..crclbar. or SO.sub.3.sup..crclbar., and PA1 R.sub.f represents a fluorinated organic radical. The compounds may be applied to surfaces liable to be or become negatively charged to suppress spark discharges from such surfaces. Those compounds in which at least two of R.sup.2, R.sup.3 and R.sup.4 are alkyl, are particularly useful in the top coat of photographic films to eliminate marks caused by spark discharges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.