The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2011
Filed:
Nov. 04, 2005
Maria Vanesa Fernandez Cid, Haarlem, NL;
Geert Jan Witkamp, Bergschenhoek, NL;
Kathryn Nicole Teesink-gerstner, Leiden, NL;
Wilhelmus Johannes Theodorus Veugelers, Kessel, NL;
Geert Feye Woerlee, Haarlem, NL;
Maria Vanesa Fernandez Cid, Haarlem, NL;
Geert Jan Witkamp, Bergschenhoek, NL;
Kathryn Nicole Teesink-Gerstner, Leiden, NL;
Wilhelmus Johannes Theodorus Veugelers, Kessel, NL;
Geert Feye Woerlee, Haarlem, NL;
Feyecon Development & Implementation B.V., Weesp, NL;
Abstract
The present invention relates to a method of dyeing a substrate with a reactive dyestuff in supercritical or near supercritical carbon dioxide, said substrate being selected from the group consisting of cellulose fibers, modified cellulose fibers, protein fibers and of synthetic fibers, or any combination thereof, wherein the method comprises the subsequent steps of: pre-treating the substrate by wetting the substrate with a fluid medium containing at least 10 wt. %, preferably at least 40 wt. % of one or more organic hydrogen bond acceptor compounds selected from the group consisting of C1-C6 alkanols, dimethyl sulfoxide, dimethylformamide, acetone, butan-2-one, dimethyl ether, methyl acetate and ethyl acetate; dyeing the substrate by contacting the pre-treated substrate with supercritical or near supercritical carbon dioxide containing a reactive dyestuff.