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Primary Examiner: Padgett, Benjamin R.
Assistant Examiner: Hunt, B.
Attorney: Kolodny; Joseph G., Roberts; Edward McC., Almaula; Prabodh I.

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Title: Process for the filling of leather and compositions therefor

Abstract: A process for the filling of leather tanned with mineral, vegetable and/or synthetic tanning agents by treating the leather, in the acid pH-range , with an aqueous solution of a filling agent consisting of unsubstituted or substituted homo- or copolymeric acrylic acids and protein glue, alone or in admixture with further additives, as well as dry or liquid compositions thereof, are disclosed; thereby an even fullness of the leather is obtained without impairing the handle, the buffing properties, the tightness of the grain, the fine grain or the dyeability of said leathers.


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Inventors: Wurmli, Albert (Riehen, CH)
Wachsmann, Hubert (Riehen, CH)

Application Number: 336571
Filing Date: 1973-02-28
Publication_date: 1976-03-23
Assignee: Ciba-Geigy Corporation (Ardsley, NY)
Primary Class(es): 8/94.21 8/94.1R, 8/94.32, 8/94.33, 252/8.57
Other Classes:
US Patent Ref:
171753Jan, 1876Adams8/94.
1345430Jul, 1920Zdanowski8/94.
1378213May, 1921Brant et al.8/94.
1962444Jun, 1934Hesselberger8/94.
2015864Oct, 1935Muller et al.91/68.
2220867Nov, 1940Kirk8/94.
2452536Nov, 1948Kirk8/94.

Other Refs: 795,711
May, 1958UK
Other References: "Resin Dispersion for Sealing and Finishing Leather," F.I.A.T. (B.I.O.S.), Final Report No. 1108, 1947, p. 178.