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1 Vat Dyes
Vat dyes are fast, especially to washing. They are called vat dyes because, being originally insoluble in water, they undergo special preparation in large vats, where they are made soluble by the action of caustic soda and hyposulphite. In this liquor the fabrics are treated. Certain other chemicals are added which change the dyestuff back to the insoluble form in the fibre. This is called the fixing process. -
2 Dyes
The following list gives a general classification of colouring matters for dyeing textile fibres: - Acid Colours dye animal fibres only and have no affinity for cellulose. If union goods are dyed with acid dyes the cotton remains white and the wool is dyed. They dye wool and silk from baths containing Glauber's salt and some acid, hence their name. Acid colours consist principally of the Azo compounds and are fairly cheap, so are used for the dyeing of dress materials, suitings, etc. No preparation of the fabric is necessary prior to dyeing. Wool and silk fabrics ate simply steeped in a warm acidified solution. Azo Dyes - These are colouring matters used for cotton dyeing and are developed direct on to the fibre. Basic Dyes - Cotton has no direct affinity for basic dyes, which consist of colour bases in combination with other chemicals, as tannic acid, sumach, or other tanning substances. Tannic acid is taken up by cotton which will then absorb the basic colours. They are very bright but not very fast. They dye wool and silk direct from plain baths. Developing Colours - See Developing Colours. Direct Cotton Colours - Dye cotton, linen, wool or silk directly, will dye cotton direct but by the addition of various salts deeper shades are obtained. With the addition of a little acid will dye wool and silk. See direct Dyes. Mordant Colours - As a rule these are very fast to washing and mostly fast to; light, such as logwood, black, Turkey red, etc. The mordant forms insoluble compounds with the colours, which are then applied to the fibres so that the insoluble coloured compounds are formed within the fibres The cotton is prepared first with some metallic mordant, as chrome, iron or alumina. Substantive Dyes - Have the property of dyeing fibres direct. They are Direct Dyes, that is they have an affinity for fibres. Sulphur and vat dyes are substantive towards cotton. Sulphur Colours are used for vegetable fibres only. These colours are insoluble in water and require the addition of sodium sulphide which converts them into soluble substances which will dye cotton. Usually fast to washing and alkalis - not so fast to bleaching (see Sulphur Colours). Vat Colours - These are fast dyes for cotton. They are insoluble in water so are converted into a soluble compound by some chemical reducing agent, and then they have a direct affinity for cotton which is dyed when immersed in the solution. There are two main classes, those prepared from anthraquinone and those related to indigo. They will dye viscose and cuprammonium rayons (see Vat Dyes) -
3 redukcione organske boje
• vat dyes -
4 анилинов
aniline (attr.)анилинови бои aniline dyes* * *анилѝнов,прил. aniline (attr.); \анилинови бои aniline dyes; директни \анилинови бои vat dyes.* * *aniline* * *1. aniline (attr.) 2. АНИЛИНОВи бои aniline dyes 3. директни АНИЛИНОВи бои vat dyes -
5 кюпно багрило
indanthrene colourindanthrene coloursindanthrene dyeindanthrene dyesvat colourvat coloursvat dyevat dyes -
6 кубовые красители
1) General subject: vat colours2) Makarov: vat dyes -
7 кубовые красители ряда антримидкарбазолов с бензакридоновыми ядрами
Textile: anthrimide carbazole vat dyesУниверсальный русско-английский словарь > кубовые красители ряда антримидкарбазолов с бензакридоновыми ядрами
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8 ледяные кубовые азокрасители
Textile: azoic vat dyesУниверсальный русско-английский словарь > ледяные кубовые азокрасители
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9 лейкокубовые красители
Textile: leuco vat dyesУниверсальный русско-английский словарь > лейкокубовые красители
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10 пиреновые кубовые красители
Textile: pyren vat dyesУниверсальный русско-английский словарь > пиреновые кубовые красители
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11 растворимые кубовые красители
Textile: soluble vat dyesУниверсальный русско-английский словарь > растворимые кубовые красители
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12 фуроиловые кубовые красители
Textile: furoyl vat dyesУниверсальный русско-английский словарь > фуроиловые кубовые красители
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13 исходные кубовые красители
Textile: vat parent dyesУниверсальный русско-английский словарь > исходные кубовые красители
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14 диаминовые красители
См. также в других словарях:
Vat dye — Vat dyes are an ancient class of dyes, based on the natural dye, indigo, which is now produced synthetically. OverviewThe process vat dyeing refers to dyeing in a bucket or fat. It can be performed whenever a liquid, even shade over the entire… … Wikipedia
vat dye — noun a water insoluble dye that is applied by reducing the dye to an alkaline form, applying the dye, then regenerating the insoluble dye by oxidation in the material; used for dyeing cotton • Syn: ↑vat color • Hypernyms: ↑dye, ↑dyestuff * * *… … Useful english dictionary
vat dye — Chem. any of the class of insoluble dyes impregnated into textile fibers by reduction into soluble leuco bases that regenerate the insoluble dye on oxidation. [1900 05] * * * ▪ chemical compound any of a large class of water insoluble dyes … Universalium
vat-dyed — ˈ ̷ ̷| ̷ ̷ adjective : dyed with one or more vat dyes * * * vat dyed «VAT DYD», adjective. dyed with vat dyes: »vat dyed goods … Useful english dictionary
vat color — noun a water insoluble dye that is applied by reducing the dye to an alkaline form, applying the dye, then regenerating the insoluble dye by oxidation in the material; used for dyeing cotton • Syn: ↑vat dye • Hypernyms: ↑dye, ↑dyestuff * * * noun … Useful english dictionary
vat-dyed — adjective Date: 1946 dyed with one or more vat dyes … New Collegiate Dictionary
vat dye — vat′ dye n. chem. any of a class of water insoluble dyes that are taken up by textile fibers and then fixed by oxidation • Etymology: 1900–05 … From formal English to slang
vat dye — /ˈvæt daɪ/ (say vat duy) noun any of a group of insoluble dyes which are applied to fabrics by first reducing them to alkali soluble leuco bases. After dyeing, the insoluble dye is regenerated in the fibres of the material by oxidisation …
List of dyes — This article is a list of chemical dyes. For natural dyestuffs, see Glossary of dyeing terms. List of dyes with Colour Index International generic names and numbers. Common name Synonyms C.I. generic name C.I. number Alcian yellow GXS Sudan… … Wikipedia
Fibres and Dyes — ▪ Table fibres application classes Natural fibres Animal Wool acid, basic, mordant, reactive, (solubilized vat) Wool blends (wool cotton, acid, direct, mordant, reactive wool viscose, etc.) Silk acid, basic, direct, mordant, (reactive) … Universalium
dye — dyable, dyeable, adj. dyer, n. /duy/, n., v., dyed, dyeing. n. 1. a coloring material or matter. 2. a liquid containing coloring matter, for imparting a particular hue to cloth, paper, etc. 3. color or hue, esp. as produced by dyeing. 4. of the… … Universalium
