Monday, 7 September 2015

Difference Between Dyes And Pigment Chemicals

Both dyes and pigments fall under the umbrella term of “colorants.” Dyes And Pigments Importers In Delhi are both used to color materials, although the way in which the coloring process takes place is different for each. Dyes require some sort of physical or chemical reaction in order for the dyeing process to occur. Pigments themselves are actual particles of color. Unlike dyes, the coloring process with pigments requires a binding or dispersion agent in which the pigment itself is suspended. The coloring process with pigments occurs when the binding or gluing agent, in which the pigment is suspended, attaches to the material being colored. The binding or dispersion agent works as a vehicle in which pigments can achieve the coloring process.

In terms of their chemical composition, one primary distinction between dyes and pigments is that pigments are insoluble in water as well as most other solvents suppliers in delhi. In general, dyes are either water soluble or soluble in another type of solvents. As mentioned above,dyes typically utilize some sort of solvent in which the dye is dissolved. This “dye-bath” is typically where the reactions of the dyeing process occurs. The coloring of materials with pigments categorically takes place on “the surface” of the product being colored. Once the pigment-dispersion agent mixture is applied to the surface of a material, the next step is for the mixture to convert from a liquid to a solid. 

Another primary distinction between dyes and pigment emulsion is size. Before the coloring process, pigments are usually ground as finely as possible, resulting in a powder of pigment particles. These pigment particles, which are usually between a few microns in size, are much larger than dye molecules. Since the coloring process with dyes occurs by means of physical and chemical reactions, it is necessary to understand dyes at the molecular level—this is often how different types of dyes are categorized. Some types of dyes are categorized based on their cationic characteristics, and some types of dyes are categorized based on their anionic characteristics. Conversely, the coloring process with pigments doesn’t take place at the molecular level, so pigments are not categorized based on these qualities.

In short, certain types of products require pigment emulsion suppliers in delhi to be colored, and certain types of products require dyes. If you’re wondering which type of colorant your product requires, contact us and let us do the work for you. We will conduct thorough testing to ensure that the chosen colorant is completely compatible with your product, and that colorant will be long lasting and of the highest quality.

Sunday, 23 August 2015

Primary Types of Industrial Dyes and Pigments

Industrial dyes are quite often used in multiple industries these days; so is the case with pigments. If we talk about industrial dyes, they are basically coloring, ionizing, and aromatic compounds that are used in numerous applications across various industries. Dyes have the property to show an affinity towards the substrate. But, they should be used cautiously because some industrial dyes are toxic and carcinogenic in nature. Anyway, at present, dyes found their application in industries like plastic, cement, cosmetics, rubber, paper, textiles, medicine, to name a few. Some primary varieties of industrial dyes are mentioned under:

1) Digital Textile Printing Dyes: In digital printing, computer controlled ink-jet nozzles or charged drums are used. The physical surfaces over which the digital prints are reproduced include common paper, photographic paper, plastic, cloth, etc. The popular varieties of dyes used for this purpose are acid inks, disperse inks, reactive inks, and dye based inks.

2) Leather Dyes: Tanneries usually make use of around 50-100 different varieties of leather dyes. Each dye produces a diverse desired effect over the leather. The dyes used in this industry include direct, acid, mordant, reactive, and basic dyes, among others.

3) Optical Brighteners: Also known as optical agents, optical brighteners are the dyes that possess the attribute of absorbing the violet and ultraviolet region of the electromagnetic spectrum, which results in the prominent re-emission of light in the blue region. This dye is not suitable to be used in water (like in aquarium, etc.), due to its toxic nature.

4) Sublimation Dyes: These dyes primarily found their application in various types of printing. They can be found in several forms like inkjet inks, ribbons for thermal transfer, and toner for laser printers. Sublimation dyes are applied by the process called heat-transfer. Their main varieties include acid, disperse, vat, direct, and reactive.

Now, as you might have got some idea about the industrial dyes and pigments importers in delhi their primary varieties, let's discuss about industrial pigments and their types. Pigments are basically the materials that make a modification in the color of the transmitted light owing to their attribute of selective absorption of the wavelength. The change in the transmission of light varies with fluorescence, phosphorescence, as well as with other forms of luminescence, in which a material emits light. Pigments are generally used in inks, coloring paints, cosmetics, eatables, etc. Nowadays there are various types of pigments available in the market, out of which some primary types of pigments are given under:

1) CLC Pigments: Cholesteric Liquid Crystal (CLC) pigments are made from CLC films. These pigments are nowadays increasingly used in security machines and also as an impediment to the counterfeit of currency notes, legal documents, etc.

2) Fluorescent Pigments: These pigments have the quality of changing the ultraviolet light into the desired color. They form the vital element of any kind of fluorescent material. The fluorescent pigments are mostly used in textile field, solvent based paper coating, and paints and aerosol coating.

3) Organic Pigments: Organic pigments consist of solid particles and they are insoluble in the application medium. There are two basic varieties of these pigments, namely natural and synthetic. Organic pigments are generally used for coloring or coating purposes (both decorative and protective) on plastics, candles, paper, rubber materials, pharmaceuticals, etc.

4) Ultramarine Pigments: They are a kind of inorganic pigments, which are non-poisonous and non-irritating in nature. They are also one of the oldest varieties of pigments. They have two basic types, viz., ultramarine blue and ultramarine violet. Ultramarine pigments found their application in coating, coloring, printing inks, cosmetics, and artist colors.

Get familiar with numerous other types of industrial dyes and pigments, along with dyestuffs, dyes intermediates, dyeing processes, and dyeing machinery.

Monday, 3 August 2015

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chemical manufacturing companies in india: chemical manufacturing companies in india: http://www.gayatridyesandchemicals.com/ Gayatri Dyes & Chemicals started its journey with the vision towards excelling in the various...

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http://www.gayatridyesandchemicals.com/
Gayatri Dyes & Chemicals started its journey with the vision towards excelling in the various domains of chemicals and colours product line. Ever since its inception in the year 1991 the firm has moved forward with a single point of focus.It sets its standards highest to deliver the best in regards to quality of its products. This attitude is further enhanced with the thorough professionalism and the vast experience which helps us to deliver the best in class products and this has also inspired the companys growth spanning in the whole country.
For any queries feel free to contact us :
Name - Yatin Khanna
Email id - gayatri.dyes@gmail.com
Phone Num - +91- 9810101960 , 9013313541
http://www.gayatridyesandchemicals.com/

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