Patent · US Expired

Light-sensitive silver halide materials containing fluorine-containing surfactants

US4292402A · kind A · utility

26Cited by
4References
7Claims
0Family size

Assignee

Inventors

Key dates

Filing dateFeb 8, 1980
Grant dateSep 29, 1981
Priority date
Expiry dateFeb 8, 2000

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S430/162
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

Fluorine-containing surfactants according to formula (Rf--X).sub.n --A--L--Z wherein Rf is a short-chain fluorine-containing group derived from hexafluoropropylene or trifluorochloroethylene, X is --O--, --S--, or --SO.sub.2 --, n is at least 2, the Rf groups being same or different, L is a monovalent bond or a bivalent bridging group such as --COO--alkylene, --CONR.sup.1 --alkylene, or --SO.sub.2 NR.sup.1 --alkylene, wherein R.sup.1 is hydrogen or C.sub.1 -C.sub.5 alkyl, and Z represents a hydrophilic polyoxyethylene group or a hydrophilic group such as ##STR1## wherein M is hydrogen, an alkali metal, ammonium, or organic ammonium, and R.sup.3 is alkyl; A is an aliphatic, aromatic, or aliphatic-aromatic group. These surfactants can be used in hydrophilic colloid layers, which may form part of light-sensitive silver halide materials.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.