Isopolyester Resins—Amoco Chemicals

While the basic corrosion resistant resin offers the most versatile range of resistance properties, variations of the basic formulation suitable for specific applications are available from many resin suppliers. The second table shows three laboratory variations of the recommended formulation. 

The resin with higher levels of maleic anhydride has greater crosslink density and thus offers very good temperature stability. It should maintain mechanical properties up to 100°C. It also shows better resistance to aromatic solvents than the basic formulation, although its resistance to mineral acids is not quite as good. Its brittleness may be undesirable in some applications. 

Adipic acid improves flexibility and neopentyl glycol improves caustic resistance. The gasoline resistance of these formulations is not as consistent as that of the other formulations shown in the second table. Adipic acid generally lowers resistance properties. 

25% Acetic Acid 71 Acceptable Food storage, handling 

Vinegar (5% Acetic Acid) 71 Acceptable Food processing, handling 

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TABLE 1.19 ISOPOLYESTER RESINS-AMOCO CHEMICALS (continued)... 

TABLE 1.58 ISOPOLYESTER, HALOGENATED AND BISPHENOL A POLYESTERS, AND VINYL ESTER RESINS-AMOCO CHEMICALS... 

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