Mixture of THP and chrome as tanning agents
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United States of America Patent
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Feb 3, 2004
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N/A
app pub date -
Jan 10, 2002
filing date -
Feb 3, 1999
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Abstract
THP and chrome are synergistic tanning agents. The combination of THP with small amounts of chrome and optionally non-ionic and/or cationic surfactants gives increased area yield and shrink temperature compared with THP, and reduced environmental impact compared with chrome. It is possible to combine degreasing, pre-tan and main tan in a single step.
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