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1 782 130

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A1

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IPC

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Application

4843174/04, 1990-05-22

(22)

Actual filing date

1990-05-22

(45)

Published

1995-07-09

(72)

Inventor

Kononenko I.I.Uvarova N.V.Babljuk E.B.D'Jachkovskij D.F.

METHOD OF PREPARING HALOGEN-SILVER PHOTOGRAPHIC EMULSION Russian patent published in 1995 - IPC

Abstract SU 1782130 A1

FIELD: chemical and photographic industry. SUBSTANCE: method involves the use of solution for emulsification at temperature 40-55 C which contains gelatin and halogenides providing the following contents in the solid phase, mol. AgBr 101.32; AgJ 7.02; AgCl 2.07-16.59 and compound H(CF2)10CH2OH (I) at concentration (5-15)·10-3 М/М AgHal. Before onset of chemical maturation isobutylbenzenethiosulfoacid sodium salt is added at concentration (3,5-7,2)·10-4 M/М AgHal, and at the stage of spectral sensibilization compound (I) at the same concentration or a mixture of compound (I) and H(CF2)6COONa (II) at concentration (5-15)·10-3 M/М AgHal of each were added. EFFECT: increased resolution capability. 1 tbl

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SU 1 782 130 A1

Authors

Kononenko I.I.

Uvarova N.V.

Babljuk E.B.

D'Jachkovskij D.F.

Dates

1995-07-09—Published

1990-05-22—Filed

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