Process for treating leathers with surfactants to improve water repellency
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United States of America Patent
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Aug 3, 1999
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N/A
app pub date -
Nov 12, 1997
filing date -
May 12, 1995
priority date (Note) -
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Abstract
The present invention relates to a process for improving the waterproofing of hides, skins, leathers, and furs, as well as other fibrous materials, by treatment with special surfactants in the beamhouse and/or in the treatment of the wet blues, prior to waterproofing. Particularly suitable as surfactants are anionic surfactants based on salts of N-acyl-amino acids and nonionic surfactants, such as alkyl polyglycosides or polyethyleneglycol carboxyalkyl ethers. The surfactants are used in amounts of 0.5 to 5% wt., relative to the pelt or shaved weight.
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