Automobiles painting

Manufacture Restoration after PVC plant reduce Automobile paint from... 

HDI is the common name for hexamethylene diisocyanate. It is also known as 1,6-hexamethylene diisocyanate, 1,6-diisocyanatohexane, Mondur HX, and Desmodur H. It is a pale yellow liquid with a strong odor. HDI is found in hardening agents for automobile paints. 

Respiratory Effects. Respiratory effeets due to inhalation of HDI are the subject of most of the literature on HDI toxieity, with most reports on humans based on individual case studies (Belin et al. 1981 Cockcroft and Mink 1979 Patterson et al. 1990 Vandenplas et al. 1993). One report described the case of a 56-year-old man who worked as a foreman in a garage where automobile painting was done and eonsequently was exposed intermittently to paints eontaining HDI for 5-6 years. He reported having developed respiratory and systemic reactions after exposure to paints (which contained 7% polymeric HDI) used in the garage. Episodes of shortness of breath, wheezing, malaise, and chills were reported. 

One clinical report of a hirnian exposed to HDI for an intermediate-dmation was reported. A 60-yem-old male automobile paint sprayer was examined following health complaints, which included shortness of breath, a productive cough, and an intermittent fever (usually about 6 hours after he finished work) of 1-month duration. Symptoms were reported to subside on weekends. He had used paint materials containing HDI for about one month and had worked without a protective mask. Clinical signs were... 

Epidemiological and Human Dosimetry Studies. The target population for HDI toxicosis is the worker using products that contain both HDI and/or HDI in combination with the HDI prepolymers, usually in the form of automobile paint hardeners. One flaw in these reports is that the dosimetry data were not well described in many cases (Baur et al. 1984 Grammar et al. 1990 Malo et al. 1983 ... 

Colour is one of the most characteristic features of paint samples. It can be precisely described by comparison with the colour of standard paint samples from a catalogue prepared by paint producers. In the case of automobile paints, a good fit between the colour of the examined sample and the colour of a sample from a... 

The obtained analytical data allow a conclusion to be drawn about whether the compared paint samples could have originated from the same coat of paint or not. If the reference material (i.e. from the suspect) is not available, only establishment of the kind of paint and the type of paint coat is possible. In the case of automobile paints, it is also possible to find the model of car involved in an accident. Eor this purpose, analytical data are compared with a database containing information about the type of paint coatings (layering, chemical composition of each layer) used in various types and models of vehicles in Europe. Such a collection has existed in Europe since 1995 and is updated every year with information on new products. Experts from many criminalistic laboratories have participated in its creation. Comparison with such a database provides information about the make and model of the vehicle involved in the incident and its year of production. It is thus helpful in identifying the perpetrator s vehicle. It should be emphasised that identifying the make and year of production of a vehicle on the basis of a paint database only applies to vehicles with a factory-new coat of paint. 

The only solution to this current morass is for all parties to agree (as they have in allied fields such as the automobile, paint, dye, colors and textile industries) upon a universal standard, such as the GIE D and select the best lamp available for its simulation, the Xenon arc. As with any standard, there must be restrictions, on this one, too. Restrictions are what define a standard, its purity, and strength. 

Protective coatings are used extensively on metal or semiconductor surfaces to isolate them or limit access of an aggressive environment (17,18). Frequently these coatings are multilayered and complex in structure, as for example in automobile paints. In this case, the innermost coating is either hot-dipped or electrodeposited zinc ("galvanizing"), over which a zinc-rich polymer-chromate undercoat is placed. The decorative top coat provides a physical barrier to the transport of water and ionic species. It is important to note, however, that protection is achieved electrochemically by the galvanic action of zinc on steel and by the inhibiting action of chromate toward oxidation. 

One of the most fascinating stories of the coatings industry involves the production of acetone, butanol, and ethanol by the Weizmann process (11. 12). Because the main objective was to produce acetone for explosives, the butanol piled up until it was found that butyl acetate was an excellent solvent for the new nitrocellulose lacquers. Commercial Solvents Corporation (of Maryland) was formed in 1919 to take over the fermentation plants operating at Terre Haute to make butanol and derivatives. The availability of butyl alcohol and the acetate was of major aid in the success of nitrocellulose lacquers in new automobile paints that permitted a reduction in the time required for painting automobiles from 23 days in 1920 to a matter of about 12 h in 1940 (13). 

Peterqent Resistant, nisanai—Polish for Automobile Painted... 

Automobile manufacturers used polytetrafluoroethylene in a variety of ways. Windshield wiper blades coated with polytetrafluoroethylene are smoother and stronger than uncoated blades. Automobile paint can be coated with polytetrafluoroethylene to protect a car s finish from tree sap, insects, and other residues. Automobile upholstery is often treated with polytetrafluoroethylene to protect against stains caused by spilled drinks and dirty shoes. Polytetrafluoroethylene added to oil makes it flow through an engine more smoothly, reducing wear and tear on the engine. 

Standard material, TU 6-10-1261-80, component for automobile paint coating... 

Epoxy resins [1] are duroplastics. Polyaddition initially produces an essentially linear macromolecule that still possesses numerous OH groups. This addition product is either placed in a mold or applied to surfaces in liquid form. This is followed by chemical curing, and this process often involves heat application. Because of their reliable adhesion to metallic substrates, epoxy resins are excellent primer coats for automobile paints and can also be used as metal adhesives. A further important field of application is electronics, where they serve as structural... 

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. 

Adds new sample pyrograms for 23 materials including tobacco, automobile paint, and packaging polymers... 

Abcor (now a division of Koch Industries) installed the first industrial ultrafiltration plant to recover electrocoat paint from automobile paint shop rinse water in 1969. Shortly afterwards, systems were installed in the food industry for protein separation from milk whey and for apple juice clarification. The separation of oil emulsions from effluent wastewaters has also become a significant application. The current ultrafiltration market is approximately US 200 million/ year, but because the market is very fragmented no individual end-use segment is more than US 10-30 million/year. In the chemical and refining industries, the principal application of ultrafiltration is the treatment of oily wastewater. 

The most important pigments based on perylenetetracarboxylic acid are Pigment Red 179, which is commonly used to color automobile paints, and the bluish-red pigment. Pigment Red 149, used e.g. in coloring plastics. 

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