Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Treatment of untanned skins or hides
Patent
1993-01-22
1995-06-27
Willis, Jr., Prince
Bleaching and dyeing; fluid treatment and chemical modification
Treatment of hides, skins, feathers and animal tissues
Treatment of untanned skins or hides
8 9415, 8 9417, 252 857, C14C 108
Patent
active
054275946
ABSTRACT:
A process for pickling raw hides, which comprises treating a delimed raw hide with an aqueous liquor that comprises a reaction product of phenol and a sulfonating agent, the molar ratio of (phenol):(SO.sub.3) being (1):(1.1-2.2), and which is free from neutral salts. The raw hides obtainable by the novel process are suitable for further processing by all conventional tanning methods.
REFERENCES:
patent: 4830632 (1989-05-01), Lauton
Pektor et al. J. Amer. Leath. Chem. Ass., 55, p. 468 (1960).
Hess Markus
Lauton Alain
Puntener Alois
Streicher Gunter
Ciba-Geigy Corporation
Diamond Alan D.
Mansfield Kevin T.
Willis Jr. Prince
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