Claims
- 1. A process for preparing a silver halide emulsion, comprising the steps of:
- dissolving a surface active agent having a hydrophilic --SO.sub.3 or --OSO.sub.3 group in an alcohol, said alcohol being an aromatic primary alcohol or a halogenated alcohol, to make a solution of the surface active agent consisting essentially of the alcohol and the surface active agent;
- dissolving one or more substantially water-insoluble photographic additives in said solution of the surface active agent to make a solution of the surface active agent and the one or more substantially water-insoluble photographic additives, and then adding the resulting solution to a silver halide emulsion.
- 2. A process as in claim 1, wherein said substantially water-insoluble photographic additive is a photographic spectral sensitizing cyanine dye.
- 3. A process as in claim 1, wherein the amount of said surface active agent present in the resulting solution is 25 to 100 wt% based on the amount of the one or more photographic additives.
- 4. A process as in claim 1, wherein the alcohol is present in the solution in an amount of from 1/3 to 1/2 the amount required to dissolve the one or more substantially water-insoluble photographic additives in the alcohol alone.
- 5. A process in claim 1, wherein the surface active agent is an anionic surface active agent selected from the group consisting of alkylsulfates, alkylsulfonates, alkylarylsulfonates and sulfosuccinates.
Priority Claims (3)
Number |
Date |
Country |
Kind |
63-164910 |
Jul 1988 |
JPX |
|
63-164911 |
Jul 1988 |
JPX |
|
63-171878 |
Jul 1988 |
JPX |
|
Parent Case Info
This is a continuation of application Ser. No. 07/375,559 filed Jul. 5, 1989, now U.S. Pat. No. 4,987,062.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3822135 |
Sakai et al. |
Jul 1974 |
|
3837863 |
Sakazume et al. |
Sep 1974 |
|
Foreign Referenced Citations (2)
Number |
Date |
Country |
2161184 |
Jul 1972 |
DEX |
2228543 |
Jan 1973 |
DEX |
Continuations (1)
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Number |
Date |
Country |
Parent |
375559 |
Jul 1989 |
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