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US 10,900,166 B2Granted
Treatment of textile material
AssigneeActicell GmbH
InventorsChristian Bruno Schimper, Paul Pachschwöll, Hubert Hettegger
Life of this patent
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Abstract
The present invention generally relates to a method for changing the color of a textile material to obtain a vintage and/or worn appearance comprising the steps of contacting the fabric textile material with a nitrate salt, activating the nitrate salt by the addition of an acid catalyst until the desired color change is achieved.
Claims7
A method for changing the color of a dyed denim textile material to obtain a vintage and/or worn appearance, comprising the steps of:
- (a) contacting the denim textile material with a solution of Mg(NO3)2,
- (b) activating the Mg(NO3)2 by the addition of a citrate catalyst, and
- (c) maintaining step (b) until the desired color change is achieved,
- wherein steps (a)-(c) are conducted at a temperature below 90° C., and
- wherein a ΔL value between the denim textile material before step (a) and after step (c) is greater than 2, wherein L refers to lightness as defined by CIE 1976 Lab color space.
2 more elements
Dependencies are inferred from the claim text.