Tanning composition and method based on an acetal of an aldehydic tanning agent
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United States of America Patent
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Oct 27, 2020
Grant Date -
Oct 10, 2019
app pub date -
May 13, 2019
filing date -
Apr 6, 2016
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Abstract
A composition including an acetal of an aldehydic tanning agent for tanning hides and/or pelts, as well as a method for tanning hides and/or pelts in order to produce leather, wherein an acetal of an aldehydic tanning agent is used. By reducing the pH, the aldehydic tanning agent can be released, whereby a tanning step is initiated. The composition according to the invention and the method according to the invention are characterized by lower toxicity compared to conventional compositions and tanning methods based on aldehydic tanning agents. Furthermore, improved penetration of the tanning agents into deeper layers of the hide and/or the pelt is possible, so that particularly homogeneous tanning is achieved.
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