These are pure dye materials for cotton, linen, viscose, rayon. They are rarely used for polyamide dying. They can also be used as wool, polyester, acrylic and modacrylics as mordants. They are used:
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In the areas requiring high fastness,
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In uniforms (military, police, fire department, etc.)
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Work clothes
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Hospitals (surgical gowns, sheets, etc.)
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Exterior use (tent, canopy, sunshade)
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Home use (towel, cotton bed sheet, table cloth, hospital articles, quilt covers, furnishings)
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Sewing yarns
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Sports clothes and marine costumes
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Yarn dyed woven fabrics
They can be successfully used always for dying frequently washed articles, cotton shirts, curtain materials (light-colored items used as sunshade) and similar articles that require similar high light and washing fastness.
Use of indanthrene dyed yarn in production of stripe and plaid fabrics gives many advantages in practice. That kind of fabrics are slashed before weaving of dyed yarn and raw yarn, than slash removal, bleaching, mercerizing or bleaching processes follow. It is the only type of dye that can resist all these processes.
Features and Advantages of Indanthrene Dye
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Indanthrene dyes are kind of dyes that maintain their importance due to high fabrication fastness for cotton dyeing especially for yarn dyed products.
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They indicate high fastnesses against wet processes. Their better wet fastness (4-5) derives from their compounds that are not soluble in water. Their light fastness is generally very good and varies between (3-8).
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Indanthrene dyes are not only resistant against light, acids and alkalis, they are also resistant against strong oxidizing agents. Their peroxide fastness is 4-5, mercerize fastness is 3-5 and hypochlorite fastness is 4-5 (2-3 for some). However, it should not be noted that all indanthrene dyes do not have high fastnesses.
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They are superior than sulfur dyestuffs. Because, sulfur dyestuffs do not have fastness against chlorine wash. However, it should not be noted that all sulfur dyestuffs do not have high fastnesses.
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Indanthrene dyes underlie the dyes that are known as dyes having fastness in dyeing and printing.
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Colors of indanthrene dyes are rather mat compare to reactive and direct dyestuffs.
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They are expensive due to their own costs and high cost of their application methods.
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Minimum color change occurs in the processes after dyeing.
Since indanthrene dyes generally have very high dye efficiency, they are not effected from dyeing conditions where dye shooting rate changes.
