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Direct dyes
Глоссарий по текстилю и текстильной промышленности |
- A class of dyestuffs that are applied directly to the substrate in a neutral or alkaline bath. they produce full shades on cotton and linen without mordanting and can also be applied to rayon, silk, and wool. direct dyes give bright shades but exhibit poor washfastness. various aftertreatments are used to improve the washfastness of direct dyes, and such dyes are referred to as “aftertreated direct colors.”
- Dyes
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Dyes, английский
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Mordanting, английский
Washfastness, английский
The resistance of a dyed fabric to loss of color or change in properties during home or commercial laundering.
Aftertreatment, английский
- Последующая обработка
- Any treatment done after fabric production. in dyeing, it refers to treating dyed material in ways to improve properties; in nonwovens, it refers to finishing processes carried out after a web has been formed and bonded. examples are embossing, creping, softening, printing, and dyeing.
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Basic dyes, английский
- A class of positive-ion-carrying dyes known for their brilliant hues. basic dyes are composed of large-molecule, water-soluble salts that have a direct affinity for wool and silk and can be applied to cotton with a mordant. the fastness of basic dyes on these fibers is very poor. basic dyes are also used on basic-dyeable acrylics, modacrylics, nylons, and polyesters, on which they exhibit reasonably good fastness.
- Dyes
Acid dyes, английский
- A class of dyes used on wool, other animal fibers, and some manufactured fibers. acid dyes are seldom used on cotton or linen since this process requires a mordant. acid dyes are widely used on nylon when high washfastness is required. in some cases, even higher washfastness can be obtained by aftertreatment with fixatives.
- Dyes
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