Application of Colorants Paint

In addition to water, oxygenated hydrocarbon solvents are generally preferred whenever the formulation allows them. This is also due to environmental considerations. Types of solvents used include alcohols, esters, ketones, and the alcohol ethers associated with inks. Some paints still use hydrocarbon solvents such as turpentine and kerosene, and there a few instances of chlorinated hydrocarbon solvents, such as trichloroethylene, being used. Finally, there are solventless delivery systems such as electrodeposition used in some applications such as automotive coatings. 

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Epoxy resins make excellent primers for automobile paints. Now most cars are coated with epoxy resins before coats of colored paint are applied. These resins adhere very well to metallic substrates. They render car bodies practically rustproof. In aircraft and boot construction, fiber-reinforced epoxy resins are used to create extremely light, high-strength structures. PCBs for electronic devices are a further field of application. 

Buckets and tube cups are often improperly balanced. Take care to ensure that matched sets of buckets, adapters, and plastic inserts do not become mixed. If these components are not inscribed with their weights by the manufacturer, application of a drop of colored paint will help to identify matched sets. In balancing rotors, consider the tubes, buckets, adapters, and inserts, and any disinfectant solution or water added for balancing. Account for solution densities in the balancing proce-... 

Floor paints, in a wide range of colors and based on a number of different binder systems, are used extensively for concrete floors in light industrial applications. 

Slipping, the optional application of a slip, a thin mixture of clay and water to the surface of clay objects, is done after drying. The slip further smooths the surface and makes it relatively impervious to liquids. It also makes an excellent substrate for painting and decorating a pigment added to it changes the color of the surface to which it is applied. 

The most important UV/VIS applications have been in the fields of color measurement and color matching, areas of great importance to the dye, paint, paper, textile, and printing industries. The pharmaceutical industry has similar interests in that the use of coloring agents in formulations requires specification. Reflectance spectroscopy has been used, however, by a number of workers to study the kinetics and mechanisms associated with a variety of reactions that were found to take place in the solid state. 

Initially, these lakes were precipitated onto inorganic carrier materials. It is interesting to note that this group of colorants was originally used for pigments in paints. Application in the textiles market followed later. Today, it is mainly the calcium and barium salts, but also manganese and, less frequently, strontium salts that have the largest sales volume. 

Transmittance and reflectance data are used in color measurements. Transmittance spectra are used for liquid color measurements, while reflectance spectra are used on solid samples (powders, surfaces) and on opaque liquids (paint). A large number of color scales are in use today. Some are specific to a particular industry, while others enjoy broader application. The most common scales are the CIE L a b (Commission... 

Chromium(lll) sulfate is used as the electrolyte for obtaining pure chromium metal. It is used for chrome plating of other metals for protective and decorative purposes. Other important applications of this compound are as a mordant in the textile industry in tanning leather to dissolve gelatin to impart green color to paints, varnishes, inks, and ceramic glazes and as a catalyst. 

As the art of waging war became more complex and sophisticated, logistics support to the field also became more complicated. It was discovered that some means other than size and shape would be necessary for rapid identification of ammunition on the battlefield. According to available information the first distinctive identification of ammunition was developed by the French. This method was the application of paint to cannon projectiles to designate the various types used on board ship. This practice was abandoned prior to 1803 because of the lack of a, suitable colored lacquer or,paint which would hold its color and remain on the projectiles during shipboard storage at sea... 

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