Improvements in or relating to the physical and mechanical properties of photographic material
Gelatin layers contain as plasticizers N-carboxylic acyl derivatives of caprolactam, such as the N-acetyl and N-mono-succinyl derivatives. These derivatives may be prepared by heating caprolactam with acetic anhydride or succinic acid respectively. Specification 478,271, U.S.A. Specifications 2,376,...
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Zusammenfassung: | Gelatin layers contain as plasticizers N-carboxylic acyl derivatives of caprolactam, such as the N-acetyl and N-mono-succinyl derivatives. These derivatives may be prepared by heating caprolactam with acetic anhydride or succinic acid respectively. Specification 478,271, U.S.A. Specifications 2,376,005 and 2,618,663, German Specification 687,033 and French Specification 1,114,721 are referred to. |
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