Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Treatment of untanned skins or hides
Patent
1981-04-08
1982-02-09
Clingman, A. Lionel
Bleaching and dyeing; fluid treatment and chemical modification
Treatment of hides, skins, feathers and animal tissues
Treatment of untanned skins or hides
8 9418, 8 9419R, 8 9419C, 8 9433, 260 8, 260 17R, 260 17A, 260 296TA, C14C 1100
Patent
active
043148000
ABSTRACT:
What is disclosed are a method for treating pelts or leather in the beamhouse, for tanning, or as an aftertreatment, which method comprises contacting said pelts or leather with an aqueous solution or dispersion of a copolymer comprising monomers of a nitrogenous ester of acrylic acid or of methacrylic acid, a further different ester of acrylic acid or of methacrylic acid, and acrylic acid or methacrylic acid, whereby portions of said copolymer are deposited in the grain layer without formation of a superficial film, and pelts and leather treated by this method.
REFERENCES:
patent: 3340237 (1967-09-01), Sellet
patent: 3584121 (1971-06-01), Krayenbuhl et al.
patent: 3617458 (1971-11-01), Brockman
patent: 3945792 (1976-03-01), Wurmli et al.
patent: 4179333 (1979-12-01), Braeumer et al.
patent: 4190687 (1980-02-01), Susiura et al.
patent: 4210721 (1980-07-01), Monsheimer et al.
Chem. Abstracts 62, 6682a, (1965).
Chemical Abstracts 62, 16527g, (1965).
Chemical Abstracts 75, 64675e, (1971).
Boessler Hanns
Monsheimer Rolf
Pfleiderer Ernst
Siol Werner
Trabitzsch Hans
Clingman A. Lionel
Rohm GmbH
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