Method for treating pelts and leather
AssigneeRohm Co., Ltd.
InventorsRolf Monsheimer, Ernst Pfleiderer, Werner Siol, Hanns Boessler, Hans Trabitzsch
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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.
Claims20
A method for treating pelts or leather in the beamhouse, for tanning, or as an after-treatment, which method comprises contacting said pelts or leather with an aqueous dispersion of a copolymer comprising from 5 to 25 percent by weight of a compound of the formula ##STR1## wherein R.sub.1 and R.sub.2 are each alkyl having 1 to 4 carbon atoms, R.sub.3 is hydrogen or methyl, and A is alkyl having up to 10 carbon atoms or is an unsubstituted or alkyl-substituted carbocyclic or N- or O-heterocyclic group having up to 10 carbon atoms;
- from 67 to 92 percent by weight of an acrylate or methacrylate ester of an alkanol having 1 to 14 carbon atoms;
- and from 1 to 8 percent by weight of acrylic acid or methacrylic acid, whereby portions of said polymer are deposited in the grain layer without formation of a superficial film.
Dependencies are inferred from the claim text.