Radiation imagery chemistry: process – composition – or product th – Color imaging process – Using identified radiation sensitive composition in the...
Patent
1981-11-09
1983-12-06
Brown, J. Travis
Radiation imagery chemistry: process, composition, or product th
Color imaging process
Using identified radiation sensitive composition in the...
430449, 430546, 260932, 260959, 260961, 564 14, G03C 140
Patent
active
044194404
ABSTRACT:
The present invention relates to a process for the introduction of water-insoluble photographic additives, especially dye couplers, in aqueous media with the application of high-boiling organic solvents. The purpose of the invention is to develop an improved process for the introduction of hydrophobic photographic additives, especially dye couplers, in gelatin or other hydrophilic bonding agents in order to produce stable dispersions suitable for storage. This invention has the object of creating a new, high-boiling solvent for the dispersion of hydrophobic photographic additives. According to the invention, this aim is achieved by employing phosphonic acid diamides, methane bisphosphonic acid diamides, phosphonic acid esters, methane bisphosphonic acid esters or mixed phosphonic acid esters or methane bisphosphonic acid ester amides as high-boiling solvents.
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Baumbach Wolfgang
Costisella Burkhard
Hoppe Renate
Kroha Walter
Kuhnert Lothar
Brown J. Travis
VEB Filmfabrik Wolfen
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