发明授权
US4338394A Process for hardening photographic gelatin 失效
硬化摄影胶的方法

Process for hardening photographic gelatin
摘要:
Gelatin-containing layers of photographic materials are hardened by adding a compound containing from 2 to 6 sulfonyl ethyl sulfate groups in the form of its salts and activating the compound by adjusting a pH-value in the range from 6.5 to 11.
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