Aqueous composition for the pretanning of hide pelts or retannin

Details Aqueous composition for the pretanning of hide pelts or retannin Aqueous composition for the pretanning of hide pelts or retannin

1997-02-18

1998-03-31

Diamond, Alan

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 9415, 8 9418, 8 942, 8 9421, 8 9423, 252 857, C14C 316, C14C 328

Patent

active

057333408

ABSTRACT:
An aqueous composition for the pretanning of hide pelts or for the retanning of leather comprises (A) an aliphatic dialdehyde containing 2 to 8 carbon atoms, (B) an anionic aromatic tanning agent, (C) water and, if desired, (D) an acid. The leather tanned or pretanned with this aqueous composition exhibits a good degree of whiteness and has a high shrinkage temperature.

REFERENCES:
patent: 2851329 (1958-09-01), Seligsberger
patent: 2941859 (1960-06-01), Fein et al.
patent: 2971814 (1961-02-01), Seligsberger
patent: 4009996 (1977-03-01), Wurmli
patent: 5011499 (1991-04-01), Rathfelder et al.
patent: 5342916 (1994-08-01), Weiser et al.
patent: 5360453 (1994-11-01), Lauton et al.
patent: 5492539 (1996-02-01), Bauer et al.
Ullmann's Encyclopedia of Industrial Chemistry 5, Edition, vol. A15, 270-271, 1990 (Month Unknown).

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