Water-insoluble aluminosilicates in the manufacture of leather

Details Water-insoluble aluminosilicates in the manufacture of leather Water-insoluble aluminosilicates in the manufacture of leather

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".

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