Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning
Patent
1979-07-10
1981-04-28
Schofer, Joseph L.
Bleaching and dyeing; fluid treatment and chemical modification
Treatment of hides, skins, feathers and animal tissues
Tanning
8 9425, 8 9427, 8 9429, C14C 306, C14C 304, C14C 308, C14C 322
Patent
active
042643198
ABSTRACT:
In an improved process of tanning for the production of leather comprising subjecting pickled uncured hides to the action of an aqueous liquor containing (1) chemical tanning or pretanning agents and (2) auxiliary chemicals to tanning and recovering leather, the improvement consisting essentially of employing (i) a water-insoluble aluminosilicate, containing bound water, of the formula
REFERENCES:
patent: 2395472 (1946-02-01), Fernald et al.
patent: 3792976 (1974-02-01), Erdmann et al.
patent: 3870464 (1975-03-01), Briggs
patent: 4049379 (1977-09-01), Erdmann et al.
patent: 4126413 (1978-11-01), Traubel et al.
Derwent Abst. 01896B/02 Dec. 12, 1978 Henkel (BE-868-481) "Use of Alkali Metal Aluminosilicates for Cleaning Crude Skins".
Derwent Abst. 10088B/06 Feb. 1, 1979 Henkel (DT 2732-217) "Additives for Defatting & Tanning in Leather Manuf.".
Chem. Abs. 20430t vol. 69 (1968) "Increasing the Water Resistance of Hides".
Arndt Emanuel
Plapper Juergen
Ruscheinsky Emil
Schumann Klaus
Henkel Kommanditgesellschaft auf Aktien
Lilling Herbert J.
Schofer Joseph L.
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