Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Treatment of untanned skins or hides
Patent
1984-06-08
1986-02-25
Lieberman, Paul
Bleaching and dyeing; fluid treatment and chemical modification
Treatment of hides, skins, feathers and animal tissues
Treatment of untanned skins or hides
8 9418, 8139, 252 857, C14C 100
Patent
active
045727210
ABSTRACT:
Skins, hides and pelts are effectively degreased under mild conditions prior to tanning, in the presence of an organic primary, secondary or tertiary amine having surface-active properties and containing at least one lipophilic residue and at least one ethylene oxide unit, optionally in admixture with a non-ionic emulsifier.
REFERENCES:
patent: 2283421 (1942-05-01), Castendyk
patent: 3630661 (1971-12-01), Ramier et al.
patent: 4270912 (1981-06-01), Prentiss
patent: 4285689 (1981-08-01), Siegler
Chemical Abstracts, 94 (1981) 85689v.
Leather and Shoes, Jan. 30, 1960, pp. 18-20.
Doyle Thomas C.
Lieberman Paul
Sandoz Ltd.
Sharkin Gerald D.
Thompson Willie J.
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