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1 743 299

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A1

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IPC

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Application

4805433/04, 1990-02-05

(22)

Actual filing date

1990-02-05

(45)

Published

1995-02-27

(72)

Inventor

Kaplun L.Ja.Lejbzon S.A.Sukhotin L.M.

MANUFACTURING PROCESS FOR BROMOIODINE-SILVER PHOTOEMULSIONS Russian patent published in 1995 - IPC

Abstract SU 1743299 A1

FIELD: production of photoemulsions. SUBSTANCE: during emulsification stage K1 solution is introduced in water-gelatin solution in 2.5-10 minutes after start of emulsification or in separate jet with constant volumetric speed W = (0.83-3.50)10-6 mol/cu.cm/s, or in separate jet with W increasing from 0.83 10-6 to 3.5 10-6 mol/cu.cm/s, or as part of KBr solution with constant speed W = (2.0-5.0)10-7 mol/cu.cm/s. In all cases, KY is used in quantity ensuring its content in solid phase as high as 5-10 mol percent. EFFECT: 1.3-1.45 times higher light sensitivity, 1.8 times lower granularity. 1 tbl

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SU 1 743 299 A1

Authors

Kaplun L.Ja.

Lejbzon S.A.

Sukhotin L.M.

Dates

1995-02-27—Published

1990-02-05—Filed

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