TANNING OF SUBSTRATES USING IONIC LIQUIDS
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United States of America Patent
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Feb 2, 2017
app pub date -
Apr 14, 2015
filing date -
Apr 14, 2014
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Abstract
The invention provides a process for tanning a substrate using at least one ionic liquid. The at least one ionic liquid can be used in at least one of the following tanning steps: tanning, re-tanning, preservation, liming, pickling, impregnation, lubrication, dyeing, fatliquoring or finishing.
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