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Product Imaging. Element. Belgium. A. No. 91

PATENT ASSIGNEE'S COUNTRY Belgium
UPDATE 12.00
PATENT ASSIGNEE This data is not available for free
PATENT CLAIMS Process for producing particles of light-insensitive organic Ag salt, said particles contg Ag behenate
- Prepg soln or dispersion A, contg alkali metal or NH4 salt
of an organic compd with at least one acidic H atom, said
organic compd including behenic acid in mixt of water & an
organic solvent, at T at which particles of said light insensi
tive organic Ag salt contg Ag behenate do not undergo
redn
- Adding a quantity of an aq soln B of Ag salt contg equal
number of Ag ions to the alkali or NH4 ions in soln or dis
persion A
Wherein an initial mixing number during said addition of B to A is > 0.0002 during said production of said particles of Ag behenate, said mixing number being defined as ratio of the molar rate at which said Ag salt is supplied to A in reactor to molar rate at which alkali or NH4 salt of organic compd is circulated in reactor; & wherein said Ag behenate particles are not associated with Hg &/or Pb ions
PATENT PHOTOCOPY Available on request

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