Method of preparing leather from unhaired hides
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United States of America Patent
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Feb 20, 1996
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N/A
app pub date -
Jun 5, 1995
filing date -
Dec 14, 1992
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Abstract
Tanning agents containing an .omega.,.omega.-dialdehyde as as the active tanning substance, optionally in a deactivated form, in combination with a polymer containing hydroxyl groups, and methods for using such tanning agents in the preparation of leather, particularly in pickling, tanning, and retanning.
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