Method for the dyeing of leather and dyed leather having a high rubbing fastness
AssigneeFraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
InventorsMichael Prokein, Manfred Renner
Life of this patent
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Abstract
A method for dyeing leather with an organic colorant in a supercritical fluid. The method includes coating a surface of the leather to provide a coated surface of the leather. The method further includes dyeing the coated surface of the leather with the organic colorant in the supercritical fluid.
Claims19
Method for dyeing leather with an organic colorant in a supercritical fluid, the method comprising:
- coating a surface of the leather to provide a coated surface of the leather;
- and
- dyeing the coated surface of the leather with the organic colorant in the supercritical fluid.
A method for dyeing leather having a coating on its surface, the method comprising dying the coating with an organic colorant in a supercritical fluid such that the coating of the leather is dyed with a high rub fastness.
A method for dyeing a product comprising a leather having a coating on its surface, the method comprising dying the coating with an organic colorant in a supercritical fluid such that the coating of the product is dyed with a high rub fastness.
Dependencies are inferred from the claim text.