Leather

Details Leather Leather

1994-05-05

1995-10-17

Johnson, Jerry D.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 9423, C14C 500, C14C 1100

Patent

active

054578353

ABSTRACT:
Leather products that are well lubricated, impermeable and water-repellent are produced by impregnating tanned leather under alkaline conditions with an aqueous emulsion of an emlsifier carboxylic acids or anhydrides containing at least 16 carbon atoms, in particular polyisobutenyl succinic acid or its anhydride containing at least 30 carbon atoms, or its sulphonic derivative followed by retanning with basic solutions or with the emulsion which is also covered may additionally contain fatty acids.

REFERENCES:
patent: 2693996 (1954-11-01), von Fuchs
patent: 3749669 (1973-07-01), Luvisi et al.
patent: 3770370 (1973-11-01), Luvisi et al.
patent: 3770372 (1973-11-01), Luvisi et al.
patent: 3784400 (1974-01-01), Cassella, Jr.
patent: 4755187 (1988-07-01), Friese et al.
Chemical Abstracts "Impermeability of chrome-tanned leather treated with aldehyde, " . . . etc. vol. 80, No. 10, Mar. 11, 1974, p. 71, Abst. No. 49289s, Columbus, Ohio.

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