クロム鞣におけるアニオンクロムの作用-1-

概要

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As chrome tanning is carried out in a low pH range below the I. E. P. of collagen, the role of anionic chromium complex in the liquor must be studied in detail. For elucidating the action of anionic complex, its adsorption to the hide from a dilute solution and its change in the hide were studied. The following results were obtained.1. Anionic chrome complex was adsorbed well from the liquor at low pH values, regardless of its concentration, but the quantity of chrome adsorbed was not so large.2. After adsorption, the anionic complex in the hide transferred its coordinated acid groups to the cationic chrome in the tanning liquor. Then the resulting chrome in the hide changed its charge into cationic.The existence of a small quantity of anionic chrome in the tanning liquor exerted a promoting action on chrome tanning.
社団法人日本畜産学会の論文