Aqueous composition for the pretanning of hide pelts or retanning of leather
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United States of America Patent
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Mar 31, 1998
Grant Date -
N/A
app pub date -
Feb 18, 1997
filing date -
Dec 15, 1994
priority date (Note) -
Expired
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Abstract
An aqueous composition for the pretanning of hide pelts or for the retanning of leather comprises (A) an aliphatic dialdehyde containing 2 to 8 carbon atoms, (B) an anionic aromatic tanning agent, (C) water and, if desired, (D) an acid. The leather tanned or pretanned with this aqueous composition exhibits a good degree of whiteness and has a high shrinkage temperature.
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