Enamel classification

H. T. Dean, Classification of mottled enamel diagnosis, J. Am. Dent. Assoc. 21 (1934) 1421-1426. 

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Paint. A classification sometimes employed to distinguish pigmented drying oil coatings (paints) from synthetic enamels and lacquers. 

NOTE 3 Viscous flammable liquids such as paints, enamels, lacquers, varnishes, adhesives and polishes may be regarded as a special group for some regulatory purposes (e.g. transport). The classification or the decision to consider these liquids as non-flammable may be determined by the pertinent regulation or competent authority. 

There are different classifications for enamel, according to application or chemical composition. These are partly overlapping. In this section an introduction is given based on two classifications ... 

The suitability of an enameled wire for a particular application depends to a very large extent on the thermal class to which it belongs. Classification of a wire according to the usual IEC standards is carried out primarily on the basis of its temperature index, breakdown voltage at nominal temperature, and the heat shock characteristics of the insulation. The IEC specifications are internationally binding. In many countries the national standards are completely IEC-harmo-nized. 

Classification Butylated melamine-formaldehyde resin Uses Crosslinking agent for alkyd/polyester or acrylic resins, for use in solv.-borne systems, industrial stoving finishes, automotive finishes, metal decorating and dipping enamels Features Provides exc. film hardness, outdoor durability, good flow and appearance... 

Pigment red 63 1 Red no. 22 Japan Classification Monoazo color Empirical C2iHi4CaN20sS Properties M.w. 462.48 Toxicology TSCA listed Uses Pigment for paints, enamels, lacquers, resins, printing inks, vinyl plastics colorant for external cosmetics and pharmaceuticals Regulatory FDA 21CFR 74.1334, 74.2334,... 

It should first be remembered that, whatever the qualities of the replacement liquid chosen, the user must conduct tests to ensure compatibility with the other materials used in manufacture (metals, insulation, enamel, varnish, glue), as well as performance tests on models and real equipment. These tests do not fall within the scope of this paper. In addition, changes in operating conditions may result in wrong classification. 

Enamel Broad classification of paints that dry to a hard, usually glossy finish. Most equipment-coating enamels require baking. Enamels for walls do not. 

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