Method for dyeing textile materials in a supercritical fluid
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United States of America Patent
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Sep 16, 2003
Grant Date -
Sep 13, 2001
app pub date -
Feb 9, 2001
filing date -
Feb 16, 2000
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Abstract
In a method for dyeing textile material with one or more fiber-reactive disperse dyestuffs in a supercritical or almost critical fluid, such as CO.sub.2, which textile material is selected from the group consisting of silk, wool and cellulose, combinations thereof and combinations of one or more thereof with synthetic fibers, such as polyester and/or polyamide, the relative humidity of the fluid is in the range from 10-100% during dyeing. Textile materials which have been dyed with the aid of this method have properties which are at least equal to those of textile materials of the same type which have been dyed in the traditional manner using water-soluble dyestuffs. A device for carrying out the dyeing method is also disclosed.
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