Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning
Patent
1980-08-11
1982-05-04
Lilling, Herbert J.
Bleaching and dyeing; fluid treatment and chemical modification
Treatment of hides, skins, feathers and animal tissues
Tanning
8 9427, 8 9433, 252 857, C14C 316, C14C 308
Patent
active
043279970
ABSTRACT:
Method of chrome tanning wherein, after unhairing and bating, a water soluble amino compound is provided in an acidified hide stock solution prior to or simultaneously with addition of a chrome tanning agent. The amount of chrome tanning agent required in the charge, and therefore the amount of chrome in the exhaust liquor or effluent, is thereby substantially reduced, thus providing greater control over pollution due to chrome in leather manufacturing operations.
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Prasad Inaganti V.
Prentiss William C.
Lilling Herbert J.
Rohm and Haas Company
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