EP 0046247 B1 19830914 - PROCESS FOR MAKING DISPERSIONS AND PHOTOGRAPHIC MATERIALS
Title (en)
PROCESS FOR MAKING DISPERSIONS AND PHOTOGRAPHIC MATERIALS
Publication
Application
Priority
DE 3031404 A 19800820
Abstract (en)
[origin: US4378425A] The invention relates to a process for the production of photographic emulsates consisting of dispersions of water-immiscible or water-insoluble particles in aqueous binder solution, characterized in that the entire non-aqueous phase is initially introduced at a temperature above the liquefaction temperatures of the aqueous and non-aqueous phases, after which a relatively small volume of aqueous phase is emulsified continuously or in portions into the non-aqueous phase by known methods and then more aqueous phase is introduced while emulsification is continued in such a quantity that the viscosity of the emulsion passes through a maximum (indicating phase reversal into an emulsion of non-aqueous particles in aqueous dispersion medium (FIG. 1)).
IPC 1-7
IPC 8 full level
G03C 1/06 (2006.01); B01F 3/08 (2006.01); G03C 1/005 (2006.01); G03C 7/26 (2006.01); G03C 7/388 (2006.01)
CPC (source: EP US)
B01F 23/49 (2022.01 - EP US); G03C 1/005 (2013.01 - EP US); G03C 7/388 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH DE FR GB IT LI
DOCDB simple family (publication)
EP 0046247 A1 19820224; EP 0046247 B1 19830914; DE 3031404 A1 19820401; DE 3160876 D1 19831020; JP S5778038 A 19820515; US 4378425 A 19830329
DOCDB simple family (application)
EP 81106196 A 19810807; DE 3031404 A 19800820; DE 3160876 T 19810807; JP 12883581 A 19810819; US 29223481 A 19810812