Process for retanning mineral tanned leathers with aromatic sulp

Details Process for retanning mineral tanned leathers with aromatic sulp Process for retanning mineral tanned leathers with aromatic sulp

1993-03-29

1994-10-04

Willis, Jr., Prince

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 9433, 252 857, C14C 308, C14C 320

Patent

active

053522419

ABSTRACT:
Process for retanning mineral-tanned leathers, characterised in that the retanning agents used are sulphonic acids and/or salts thereof of the general formula ##STR1## wherein R represents hydrogen, --CH.sub.3 or the radicals ##STR2## X represents hydrogen, an alkali metal ion, especially sodium, potassium or lithium ion, or an ammonium ion and

REFERENCES:
patent: 2249757 (1941-07-01), Flett
patent: 2409671 (1946-10-01), Faust
patent: 2973240 (1961-02-01), Schmitt
patent: 4830632 (1989-05-01), Lauton

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