| 简介 |
PROBLEM TO BE SOLVED : To provide a re-tanning agent for achieving production of "light leather" products compared to leather products produced by using a conventional re-tanning agent.
SOLUTION : The re-tanning agent using a collagen powder comprising crosslinked regenerated collagen is provided, and the agent is used for carrying out a re-tanning process on leather tanned by using a chromium tanning agent or formalin usually used as a tanning agent. Thus, leather products achieving further light-weight can be produced while maintaining sufficient whiteness, physical strength and weather resistance such as fastness against sun rays as characteristics of normal leather products.
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