Compositions for oxidizing garments and related methods
AssigneeKemin Industries, Inc.
InventorGiovanni Maiani
Life of this patent
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Abstract
The present invention relates generally to compositions and methods for oxidizing or discoloring garments, such as denim. Another aspect relates to providing a cost-effective and environmentally safe alternative to hazardous bleaching agents, such as potassium permanganate.
Claims21
A method for permanently discoloring a garment or fabric in order to achieve a desired effect or appearance comprising the steps of applying to an area of the garment or fabric a composition that contains potassium ferrate (VI) in an amount necessary to achieve the desired effect or appearance, and where the area of the garment or fabric acquires a brown shade, wherein the composition does not contain potassium permanganate.
An improved method for permanent discoloration of fabrics or garments on an industrial-scale that does not use potassium permanganate, comprising applying to an area of the fabric or the garment a composition comprising potassium ferrate (VI) in an amount necessary to achieve a desired effect on the fabric or garment, wherein the composition does not contain potassium permanganate, and where the application onto the area results in the area acquiring a brown shade.
A process for oxidizing a garment or fabric that does not include the use of potassium permanganate, comprising the steps of:
- applying to the garment or fabric a composition that contains an amount of potassium ferrate (VI) effective to permanently change the original color of the garment or fabric and achieve a desired effect on the garment or fabric, where applying the composition to an area of the garment or fabric results in the area turning a brown shade;
- and treating the garment or fabric to remove metal oxides, wherein the composition does not contain potassium permanganate.
An alternative method to using potassium permanganate in industrial bleaching operations comprising the steps of:
- applying to a garment a first composition that contains an effective amount of potassium ferrate (VI) to permanently discolor the garment and achieve a desired effect on the garment, where applying the composition to an area of the garment results in the area turning a brown shade, wherein the composition does not contain potassium permanganate, the composition is less hazardous than potassium permanganate, and the application onto the garment results in visual feedback showing the areas where the composition has been applied to the garment;
- and applying to the garment a second composition that contains an effective amount of oxalic acid to partially or completely remove metal oxide from the garment.
Dependencies are inferred from the claim text.