Method for the preparation of leather and fur skins

Details Method for the preparation of leather and fur skins Method for the preparation of leather and fur skins

1976-07-15

1977-08-02

Kight, III, John

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Fur

8 941D, 8 9419R, C14C 108, C14C 326

Patent

active

040392813

ABSTRACT:
Tanning and pickling of leather and fur skins are conducted at selected water content ranges (50-80 weight percent for leather, 30-80 for skin) established by partial water removal; in water-immiscible organic solvent media, preferrably halogenated hydrocarbons, to produce end products (after such further finishing steps as post-tanning, dyeing, fatliquoring and coating) which are equal to or better in quality than products tanned conventionally in aqueous media while avoiding the pollution or pollution-related economic problems of aqueous media.

REFERENCES:
patent: 2523326 (1950-09-01), Putnam
patent: 2781241 (1957-02-01), Ushakoff
patent: 3006714 (1961-10-01), Ushakoff
patent: 3512918 (1970-05-01), Endres et al.
Journal of The American Leather Chemist Assoc., Production of Leather Using Non-Aqueous Systems, pp. 314-332, June 1958.
Journal of The American Leather Chemist Assoc., Sole Leather Tanning in a Solvent System, pp. 204-209, Apr. 1955.

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