ARMY FOREIGN SCIENCE AND TECHNOLOGY CENTER CHARLOTTESVILLE VA
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A developer for photographic materials is based on paraformaldehyde and hydroquinone. To increase the contrast of photographic images, P-containing polyalkylene glycols of the formula HOCH2CH2On- POOROCH2CH2On where R is alkyl or aryl, n is a whole even number, and x is a whole odd number, are added to the developer.
- Printing and Graphic Arts