EP 0674221 B1 19980826 - Surfactants and hydrophilic colloid compositions and materials containing them
Title (en)
Surfactants and hydrophilic colloid compositions and materials containing them
Title (de)
Tenside und hydrophile, kolloidale Zusammensetzungen und diese enthaltenden Materialien
Title (fr)
Agents tensioactifs et compositions colloidales hydrophiles et matériaux les contenant
Publication
Application
Priority
- GB 9403209 A 19940219
- US 19872994 A 19940218
Abstract (en)
[origin: EP0674221A1] Surfactants useful as dispersing aids in the preparation of compositions comprising a hydrophilic colloid having hydrophobic particles dispersed therein have the structure <CHEM> wherein R is H or methyl provided that when each n=1, each R is methyl; M is a cation; and, n is an integer from 1 to 6. Such surfactants offer coating, photographic property and processing advantages when incorporated in photographic materials comprising a support bearing a plurality of hydrophilic colloid layers including at least one light-sensitive silver halide emulsion layer wherein at least one of the underlying hydrophilic colloid layers of the material contains hydrophobic particles dispersed therein with the aid of the surfactant.
IPC 1-7
IPC 8 full level
G03C 7/388 (2006.01)
CPC (source: EP)
G03C 7/388 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0674221 A1 19950927; EP 0674221 B1 19980826; DE 69504224 D1 19981001; DE 69504224 T2 19990429
DOCDB simple family (application)
EP 95200377 A 19950216; DE 69504224 T 19950216