TABLE OF CONTENTS by Harold M. Werner and Expanded by Staff
REFERENCES: Keane (ed.). "Good Painting Practice," Steel Structures Painting Council. Levinson and Spindel, "Recent Developments in Architectural and Maintenance Painting." Levinson, "Electrocoat, Powder Coat, Radiate." Reprints, Journal of Coatings Technology, 1315 Walnut St, Philadelphia. Roberts, "Organic Coatings-Their Properties, Selection and Use," Government Printing Office. "Paint/Coatings Dictionary," Federation of Societies for Coatings Technology. Weismantel (ed.), "Paint Handbook," McGraw-Hill. Publications of the National Paint and Coatings Association.
Paint is a mixture of filmogen (film-forming material, binder) and pigment. The pigment imparts color, and the filmogen, continuity; together, they create opacity. Most paints require volatile thinner to reduce their consistencies to a level suitable for application. An important exception is the powder paints made with fusible resin and pigment.
In conventional oil-base paint, the filmogen is a vegetable oil. Driers are added to shorten drying time. The thinner is usually petroleum spirits.
In water-thinned paints, the filmogen may be a material dispersible in water, such as solubilized linseed oil or casein, an emulsified polymer, such as butadiene-styrene or acrylate, a cementitious material, such as portland cement, or a soluble silicate.
Varnish is a blend of resin and drying oil, or other combination of filmogens, in volatile thinner. A solution of resin alone is a spirit varnish, e.g., shellac varnish. A blend of resin and drying oil is an oleoresinous varnish, e.g., spar varnish. A blend of nonresinous, nonoleaginous filmogens requiring a catalyst to...
