Classification of Dyes by Use or Application Method  posté le samedi 23 juillet 2011 08:50

Direct Dyes. These watersoluble anionic dyes, when dyed from aqueous solution in the presence of electrolytes, are substantive to, i.e., have high affinity for, cellulosic fibers. Their principal use is the dyeing of cotton and regenerated cellulose, paper, leather, and, to a lesser extent, nylon. Most of the dyes in this class are polyazo  compounds,  along  with  some stilbenes, phthalocyanines,  and  oxazines. Aftertreatments, frequently applied to the dyed material to improve washfastness properties, include chelation with salts of metals (usually copper or chromium), and treatment with formaldehyde or a cationic dyes complexing resin.
 
Vat Dyes. These waterinsoluble dyes are applied mainly to cellulosic fibers as soluble leuco salts after reduction in an alkaline bath, usually with sodium hydro- gensulfite. Following exhaustion onto the fiber, the leuco forms are reoxidized to the insoluble keto forms and aftertreated, usually by soaping, to redevelop the crystal  structure.  The  principal  chemical classes  of vat  dyes  are  anthraquinone and indigoid. 
 Cationic (Basic)Dyes. These  watersoluble cationic  dyes are  applied  to paper, polyacrylonitrile (e.g. Dralon), modified nylons, and modified polyesters. Their original use was for silk, wool, and tanninmordanted cotton when brightness of shade  was  more  important than fastness  to  light  and  washing. 
Basic dyes  are watersoluble and yield colored cations in solution. For this reason they are frequently referred to as cationic dyes. The principal chemical classes are diazahemicyanine,  triarylmethane,  cyanine,  hemicyanine,  thiazine, oxazine,and  acridine. Some basic dyes show biological activity and are used in medicine as antiseptics.
 
Acid Dyes. These watersoluble anionic dyes are applied to nylon, wool, silk, and modified acrylics. They are also used to some extent for paper, leather, ink-jet printing, food, and cosmetics.
Solvent Dyes. These water-insoluble but solvent-soluble dyes are devoid of polar solubilizing groups such as sulfonic acid, carboxylic acid, or quaternary ammonium. They are used for coloring plastics, gasoline, oils, and waxes. The dyes are predominantly  azo  and anthraquinone, but  phthalocyanine  and  triarylmethane dyes are also used.

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The latest online wholesale sunglasses  posté le mardi 06 avril 2010 03:56

The latest online wholesale sunglasses

Great products at cheap prices are often accompanied with speculation. Contrary to the notion, it comes to wholesale Armani Sunglasses for sale there is very little or no scope for doubt. Stores selling wholesale replica sunglasses offer style conscious products. These shades, which are not copied but inspired from designer sunglasses, have been around for a long time now. And why not go for something inexpensive rather than something insanely expensive as designer sunglasses, when you can get the same style and similar quality.

Initially used for visual comfort, sunglasses are no longer a visual aid but a style statement. Celebrities might use them to hide from paparazzi but with the advent of designer replicas, wholesale replica sunglasses have become a rage amongst commoners. Everyone wants the shades that Marlyn Monroe or Madonna wears. Wholesale Sunglasses for sale today offer exact replicas of celebrity sunglasses to lure the star struck audiences. These sunglasses offer great quality within affordable prices. Wholesale replica sunglasses use designer sunglasses as a creative inspiration only and do not have fake brand names imprinted on them.

At the latest online wholesale replica sunglasses’ distributor websites you can get a replica of anything from a pair of Armani shades to Fendi sunglasses, all this for unbelievable prices! What’s more, Wholesale replica sunglasses do not infringe any copyright laws as they are just imitations and do not sell replicas under brand names, so it’s perfectly safe to buy these sunglasses and their quality is trustworthy.

There is another tempting aspect about wholesale Escada Sunglasses for sale, and that is the irresistible discounts offered by wholesale distributors. Most wholesale distributors offer great discounts on their wholesale replica sunglasses in order to increase their customer base and reach out to thin pockets. While you go on shopping for designer replicas you need to ensure that you are not fooled for fake designer sunglasses. For this always buy your replicas from a trusted and reputed dealer who will tell you the difference between replicas and the designer shades, after all there are no free dinners in this world, so there is bound to be a little quality difference between the originals and the imitations.

Internet reference:

http://www.amazines.com/article_detail.cfm/705607?articleid=705607

Editor: Sarable

Welcome to my website                  http://www.ourwholesalesonline.com

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Information on The Right Wholesale Product Supplier  posté le mardi 06 avril 2010 03:50

 

Information on The Right Wholesale Product Supplier

 

It is said that one is able to make money from wholesale products because buying them is cheaper than buying per item. For anyone involved in the retail business, it is important to know where to buy the cheapest wholesale products, regardless if it is wholesale watches, wholesale Footwear, or whatever kind of wholesale products-the success of a business depends on where one can buys wholesale products and for how much one can get these goods .One can have access these products through a wholesale product supplier, a person or a company that provides the venue for wholesale buying, selling and trade.

 

I know a website, www.ourwholesalesonline.com, is a venue where interested people can buy wholesale Sunglasses, wholesale Bags & Handbags or wholesale Jerseys. For those who look for the great sources of wholesale products, overstocks or bargains of the day, the ourwholesalesonline store is a great starting point.

 

Overstocks are usually the source of wholesale job lots, since companies usually overestimate their market's demand. When the demand declines and their stock supply is enough to meet the dwindled need for their products, they sell in bulk. However, not all manufacturers can be a wholesale product supplier. For one, not all directly sell their products in bulk, especially if they have a very high demand to meet .Then there are companies or entrepreneurs who do not want to reveal that they have overstocks, since this could adversely affect their business and the price of their products in the market.

 

Importers and distributors can also be a wholesale product supplier. However, they aren't exactly the best sources of wholesale products or overstocks, since they merely bought their stocks from the manufacturers. Surely, their prices are already higher compared to if one buys directly from the manufacturer. However, these two sources can still sell their products at a lower price, especially when compared to the prices of the retailers themselves. Retailers, after all, get their stocks from these sources.

Thanks to the Internet, form the websites where retailers can buy wholesale products and clearance stock for the best possible prices.

Reference:http://www.articlesbase.com/international-business-articles/the-right-wholesale-product-supplier-knowing-the-right-sources-845037.html

Editor :Jason

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Handbags or bags with all kinds of styles  posté le mercredi 31 mars 2010 03:51

Handbags or bags with all kinds of styles

A purse is a bag, typically used by women to hold personal items, and are often fashionably designed. Due to the surging glamorization, the demand for wholesale Fendi Handbags for sale has also risen; this called for various designers to enter the market and offer a range of voguish handbags. In this range, Swarovski crystal handbags, besides representing a supreme evening accessory, are one of the most sophisticated and most opted for handbags, for a simple reason that Swarovski offers a range of meticulously cut crystal glass and related products produced in Austria.

Each crystal purse is an exquisite work of art, decorated with hand–set Swarovski crystals across the entire bag on a solid metal frame, accompanied by a conveniently tucked link chain, enabling you to wear it on shoulder or simply use it as a clutch. These are luxurious accessories that cannot be surpassed by ordinary designer handbags. These wholesale Valentino Handbags for sale, besides guaranteeing authenticity consist of a classic elegance that is unsurpassed by ordinary evening purses. Crafted in different sizes and shapes- from eggs, ovals and squares to dogs and cats, these handbags are embellished with thousands of individually hand–set Swarovski crystals that symbolize unusual elegance and distinction.

There are also numerous sites on the internet that offer a wide range of exquisitely studded wholesale Thomas Wylde Handbags for sale. You might also come across several designers who use Swarovski crystals for crafting these evening bags which are a unique combination of an evening bag with style. These online stores offer various discounts and vouchers along with presenting some highly impressive shipping deals. Regardless of which one you choose, you can now complete your wardrobe with any of these stunning crystal purses, while radiating a multifaceted sparkle and be rest assured to be the talk of every party!

Internet reference:

http://www.amazines.com/article_detail.cfm/1481662?articleid=1481662

Editor: Sarable

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Buy Cheap Coach Handbags Online  posté le mercredi 31 mars 2010 03:46

Buy Cheap Coach Handbags Online

Many women are into fashion Coach Handbags. But you should be careful about this. Because sometimes, the cheap Coach handbags that are seen everywhere turn out to be rip offs. That is why we are advising you to be careful when you are getting cheap Coach Handbags.

For example, there are sites that promise the latest Coach handbags at a less expensive rate. If you check the official site of Coach, you will see that the designs are in fact very similar to what they are selling.

But you are still not sure whether the cheap Coach handbags that they are selling are real. How will you feel if you shelled out a higher price for purse only to find out that this was not an authentic coach bag after all?

One of the reasons why cheap Coach Handbags are very popular is because they are very affordable, even if they are designer handbags. Compared to other brand names, upper middle class men can already purchase their own. When setting it alongside the other designer brands, it seems like only the upper class can afford getting these. At least the manufacturers of cheap Coach Handbags make it possible for middle class and lower middle class to get their own. After all, no matter which class you belong to, you still have a right for fashion.

Coach handbags started out as the family business in Manhattan. Six artisans were responsible for the handcrafted collection. This became them ark of the Coach handbags.

The designs are handed out from one generation to another. When these have been refined, these were then made stronger.

There were innovations in the leather finishes. New colors and grains were introduced. Modern materials were the key ingredients in coming up with Coach Handbags.

If you are looking for the classic designs of cheap Coach Handbags, you can visit to their official site and get an idea on what these are. Then you can canvass for the particular design that you want on discounted sites.

Internet reference:

http://www.1articleworld.com/Art/536566/47/Buy-Cheap-Coach-Handbags-Online.html

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