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公开(公告)号：US10655273B2
公开(公告)日：2020-05-19
申请号：US16023652
申请日：2018-06-29
发明人： Mark D. Keranen
摘要： Described herein are methods of dyeing fibers, and dyed fibers and textiles made using the methods. The methods involve contacting a fiber with a dye liquor at a dye liquor temperature of about 30° C. to 115° C. to form a dyed fiber, wherein the dye liquor components include at least N,N′-diacetyl indigo and a salt solution having ionic strength of about 0.03 M (moles/liter) to 1 M and pH of about 3 to 8 at 20° C. The contacting is generally carried out for a contact period of about 10 seconds to 30 minutes, for example by immersing the fiber in the heated dye liquor. By using the disclosed methods, N,N′-diacetyl indigo is substantially uniformly distributed on the dyed fiber to provide intense, vibrant colors affixed thereto. Dyed textiles display substantially uniform color.
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公开(公告)号：US20220228158A1
公开(公告)日：2022-07-21
申请号：US17578807
申请日：2022-01-19
发明人： Shawn Genung
摘要： According to the invention, there is provided a novel population of indigo plants (Indigofera suffruticosa) producing a higher than average level of indican. This invention thus relates to an assemblage of indigo seeds of the population, to the indigo plants of population, and to methods for producing indigo varieties with high indican content derived from the indigo plants of the population.
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公开(公告)号：US11208760B2
公开(公告)日：2021-12-28
申请号：US16770471
申请日：2018-12-06
发明人： Mark D. Keranen
摘要： Described herein are compositions including O,O′-diacetyl leucoindigo. Also described herein are methods of pre-dyeing fibers with O,O′-diacetyl leucoindigo, followed by developing the pre-dyed fibers using hydrolysis or oxidation conditions to form indigo-dyed fibers. Also disclosed are indigo-dyed fibers, textiles, and fabrics made using O,O′-diacetyl leucoindigo, wherein cellulose, polyester, polyacrylonitrile, nylon, wool, and other compositional fiber types are suitably dyed with indigo dye using the described compositions and methods.
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