Soaking method
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United States of America Patent
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-
Aug 17, 1982
Grant Date -
N/A
app pub date -
Oct 27, 1980
filing date -
Nov 3, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
What is disclosed is a method for soaking preserved skins or hides adaptable to the preparation of leather which comprises soaking said skins or hides in an aqueous bath containing a compound selected from the group of compounds of the formula ##STR1## and acid addition salts thereof, wherein R taken alone is --H, --NH.sub.2, --CH.sub.3, or --NHCN, X taken alone is .dbd.O, .dbd.S, or .dbd.NH, and R and X taken together form a five- or six-membered heterocyclic ring having conjugated double bonds and containing only nitrogen as a hetero atom.
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