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Basic dyes
| Глоссарий по текстилю и текстильной промышленности |
- 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
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Dyes, английский
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Polyesters, английский
Synthetic resins, usually obtained from polymerization of a dibasic acid with a dihydric alcohol, not usually used as lubricant stocks. (see diesters).
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Disperse dyes, английский
- A class of slightly water-soluble dyes originally introduced for dyeing acetate and usually applied from fine aqueous suspensions. disperse dyes are widely used for dyeing most of the manufactured fibers. fiber-reactive dyes: a type of water-soluble anionic dye having affinity for cellulose fibers. in the presence of alkali, they react with hydroxyl groups in the cellulose and thus are liked with the fiber. fiber-reactive dyes are relatively new dyes and are used extensively on cellulosics when bright shades are desired.
- Dyes
Direct dyes, английский
- 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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