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Friday, May 15, 2020 | History

2 edition of Vat dyestuffs and vat dyeing found in the catalog.

Vat dyestuffs and vat dyeing

M. R. Fox

Vat dyestuffs and vat dyeing

by M. R. Fox

  • 178 Want to read
  • 31 Currently reading

Published by Chapman and Hall in London .
Written in English


Edition Notes

Statementby M.R. Fox.
The Physical Object
Pagination323p.
Number of Pages323
ID Numbers
Open LibraryOL13696885M

A wide variety of dye vat machine options are available to you, There are suppliers who sells dye vat machine on , mainly located in Asia. The top countries of suppliers are India, China, from which the percentage of dye vat machine supply is 1%, 99% respectively. The word vat means, ‘Vessel’. The dyes take their name from vatting. The vat dyes are naturally coloring matter and kept in wooden vat and make solubilise vat dyes by the process of formantation – so it is called vat dyes. They are applied in a special kind of a dyebath in which the dye is reduced to a soluble form by means of a strong reducing agent, such as hydrosulphite.

Download PDF The Chemistry Of Vat Dyes book full free. The Chemistry Of Vat Dyes available for download and read online in other formats. PDF Book Download Full PDF eBook Free Download this book provides a guide to the chemistry of dyestuffs and the dyeing process. The Chemistry of Anilines. Zvi Rappoport — Science. Author: Zvi. Vat dyeing = dyeing using a bucket ("vat") Vat dyestuff = a dyestuff which is applied in its "leuco" (reduced) state and as it oxidizes with air oxygen, the colour develops. Anthraquinone vat dyes are the most important group of vat dyestuffs. — Preceding unsigned comment added by , 26 March (UTC).

Vat dye definition is - a water-insoluble generally fast dye used in the form of a vat liquor —called also vat color. Vat dyeing is a process that refers to dyeing that takes place in a bucket or vat. Almost any dye, including fiber-reactive dyes, direct dyes, and acid dyes, can be used in a vat dye. Cotton, wool, and other fibers can be all dyed with vat dyes. The original vat dye is indigo, .


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Vat dyestuffs and vat dyeing by M. R. Fox Download PDF EPUB FB2

Additional Physical Format: Online version: Fox, M.R. (Maurice Rayner), Vat dyestuffs and vat dyeing. New York, Wiley, (OCoLC) This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. Get this from a library. Vat dyestuffs and vat dyeing. [M R Fox].

Vat dyes are a class of dyes that are classified as such because of the method by which they are applied. Vat dyeing is a process that refers to dyeing that takes place in a bucket or vat.

Almost any dye, including fiber- reactive dyes, direct dyes, and acid dyes, can be used in a vat dye. Cotton, wool, leather and other fibers can be all dyed. Vat dyeing process: Vat dyeing is complex from other dyeing. Its dyeing process are given below: The required water for dyeing is taken in the dye bath and it is maintain at proper temperature (50º- 60 ºC) the reducing and dyeing temperatures vary from dyestuffs to dyestuff.

The vatted dye solution may than be added to the dye bath containing. *immediately available upon purchase as print book shipments may be delayed due to the COVID crisis. ebook access is temporary and does not include ownership of the ebook.

Only valid for books with an ebook version. Procedure of the dyeing process with reactive dyestuffs The recipes of dyeing with vat dyestuff are described in the Table 2 and the complete process is shown graphically in the Figure 2.

The dyeings were executed by the semi-pigmentation process proposed by Dystar, the company that supplied the vat dyestuff used in this study. Na 2 S 2 O 4 reduces indigo at 30–50 °C, resulting in formation of mostly biphenols (leuco-indigo). The reduced form is quite stable in presence of NaOH to carry out dyeing at room temperature.

Other vat dyes are reduced at a temperature depending on the class of dye (Table ).However Na 2 S 2 O 4 is very unstable, at the time of its reduction, it is decomposed through hydrolysis, thermal.

Vat dyeing means dyeing in a bucket or can be done whenever a solid even shade, the same color over the entire garments, is wanted, using almost any dye, including fiber reactive dye, direct dye, acid dye etc.

the opposite of vat dyeing is direct dye application, such as, for example. Tie dyeing “vatFile Size: 24KB. Vat Dyes are a unique class of dye, similar to Indigo. The dye powder is not soluble in water, nor will it dye cellulose or silk fibers, until reduction takes place usually at ° to ° F (50°C to 60°C).

They require a reducing agent, Thiox, an alkali and Lye (not available on our website).5/5(1). The discovery of vat dyes in the early s was a major technological advance for the industry.

The complex chemical structures provided a rainbow of shades and had remarkable lightfastness properties when applied to textiles. The vat dye class became the largest volume synthetic dye group manufactured worldwide.

However, the hazardous organic chemicals, solvents and heavy metals used in the. Vat Dye Powder F For Cotton Yarn Dyeing, Find Complete Details about Vat Dye Powder F For Cotton Yarn Dyeing,Vat Dyestuff For Textile Treatment,Cotton Vat Dyestuff,Vat Dyestuff from Dyestuffs Supplier or Manufacturer-Shijiazhuang Sahnwang Chemical Products Sales Co., Ltd.

The dyeing of viscose rayon with direct and vat dyestuffs in high-temperature dyeing machines (Technical circulars) [Imperial Chemical Industries] on *FREE* shipping on qualifying offers.

The dyeing of viscose rayon with direct and vat dyestuffs in high Author: Imperial Chemical Industries. Qinhuangdao Fuge Science &Amp; Technology Co.,ltd Info Email Web Phone No Liupanshan Road Vat Dyes Countertops, Vanity Tops & Table Tops Aggregate & Sand Dyestuffs Quarry Stone & Slabs Allied Industrial Corp., Ltd.

Info Phone Rochester 12 F No Sec. 2 Tun-hwa S. Taipei Taiwan r.o.c. Direct Dyes Sulphur Dyes Reactive Dyes Dyestuff. reactions increase the consumption of raw materials, resulting in vat dyes having the highest ratio of raw materials to finished dye as compared to the other dye classes.

This ratio is reported as for the vat dye production of German companies and as for the vat dye production by Ciba in Toms River, New Jersey in (Reference 23 File Size: KB. Vat dyes are different from reactive dyes, disperse dyes, basic dyes, acid dyes or azoic color but its application process is near similar as sulphur dyes are used for coloring cellulosic fiber specially cotton fiber.

It is widely used for run the dyeing process of cotton yarns which is used for producing jeans or denim product. The word vat is come from vessel; vat dyes can be. This invention relates to a process of dyeing with vat dyes and more particularly to an improved process for applying vat dyes to fabrics by continuous dyeing processes which will be suitable for the application of colors of the vat dye class not only to cotton but to fabrics comprising fibers which are deleteriously affected by strong alkalies such as wool, silk, mohair, acetate rayon, etc.

eBook is an electronic version of a traditional print book that can be read by using a personal computer or by using an eBook reader. (An eBook reader can be a software application for use on a computer such as Microsoft's free Reader application, or a book-sized computer that is used solely as a reading device such as Nuvomedia's Rocket eBook.

Background information on the history and chemistry of vat dyes is provided along with hands-on, problem-solving activities on producing, testing, and using these chemicals.

Indigo and inkodyes are used to illustrate how vat dyes are synthesized and used. This monograph is the first in a three-volume series of monographs entitled Palette of Color.5/5(3).

Vat dye, any of a large class of water-insoluble dyes, such as indigo and the anthraquinone derivatives, that are used particularly on cellulosic fibres.

The dye is applied in a soluble, reduced form to impregnate the fibre and then oxidized in the fibre back to its original insoluble form. Vat dyes are especially fast to light and washing.

Brilliant colours can be obtained in most shades. Application of Dyestuffs To Textiles, Paper, Leather and Other Materials. by J. Merritt Matthews, Ph.D. Back t o first page of Application of Dyestuffs CHAPTER XVIII - THE VAT DYES 1.

Classes of Vat Dyes 2. Indigo 3. Methods of Dyeing Indigo 4. The Fermentation Vat 5. The Copperas Vat 6. The Zinc Vat 7. The Hydrosulphite Vat 8. Indigo.Leuco-Vat Dyeing The earliest and the most fundamental vat dyeing process is the leuco-process in which the practical dyeing does not begin until the vat-pigment is dissolved in caus- tic soda and hydrosulfite solution.

Here we have a classical case of anions in solution, their sorption and diffusion into the nonionic cellulosic fiber.Colourtex Coravat VAT Dyes is eco-friendly textile dye as well as a green and sustainable range of textile auxiliaries. Coravat is a compact range of vat dyes for versatile application meeting high fastness needs.

Coravat range of anthraquinone class vat dyes are suitable for .