Fumes paints resistant

For special applications, however, such as for normally humid areas, and contaminated or chemically aggressive locutions, epoxy paints tne con.sidered to be more appropriate. They provide a protective coating which is resistant to chemical fumes, corrosion and temperature. Chlorinated rubber paints, which also fall into the same category of protective paints, may also be used for these areas but, not being temperature resistant, are not preferred to epoxy paints. 

When the highest resistance to corrosion and solvent fumes is needed, catalyzed paints are the answer. These come in two parts a clear or colored base finish and a catalyst. Since their pot life is limited (typically eight hours), they must be mixed just prior to use. Brochures with information on their chemical resistance can be obtained from companies that sell industrial finishes. Since the resistance to different chemicals varies from brand to brand, a planner should study several types to find one that will best suit the particular application. These finishes are of the high gloss type. For highest chemical resistance to fumes, a coat of clear finish should be applied on top of the colored one. While the vehicle in the finish is very resistant, the pigments may not be and therefore could discolor. 

A laboratory can sometimes save money by building a simple hood where no hazardous, flammable, or corrosive fumes are involved. In one case, a hood was needed solely for drawing off unpleasant fumes from a muffle furnace and water vapor. A carpenter constructed a plywood box which reached from counter top to ceiling and had a large opening in the front. This was painted with a resistant paint, primarily to seal the surfaces and make them easy to clean. An inexpensive fan exhausted the hood to the outside. This simple hood worked for many years. 

Chemical Abstracts, Decennial Indexes, under Acid-Resistant Materials and Sealing Compositions 8)M.H.Sandler, "Second Report on the Development of a Fuming Nitric Acid Resistant Paint," AberdeenPG, Md, Project No. TB4-006D 593 32/006(1958)... 

Storage cabinets can be obtained to serve either as flammable material storage cabinets or as cabinets for the storage of acids. In the latter case, the shelves must be provided with protection against the effects of corrosion. One of the more economical ways of achieving the required protection is to use polyethylene shelf liners. If they are not needed or need to be replaced, they can readily be taken out or can be replaced with stock polyethylene. The interior walls can be protected from the effects of acid vapors and fumes by being painted with an acid-resistant paint. 

Autooxidative cross-linking type paints include alkyds, epoxies, esters, oil-moditied urethanes, and so on. These are commonly used, when properly formulated, to resist moisture and chemical fume environments. They can be applied over wood, metal, or masonry substrates. 

Among these resin fortified oil based paints are included the alkyds, epoxy esters, oil modified urethanes, etc. These paints may be formulated as airdrying or baking types, and with suitable pigments be formulated to be resistant to a variety of moisture and chemical fume environments, as well as application over wood, metal, and masonry substrates. These paints have the following advantages ... 

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