![]() ![]() ![]() In either case, the basecoat doesn’t emit more than 3.5 lbs. The common exempt solvents include: acetone, ethyl acetate, tertiary butyl acetate (TBAc), isopropanol and P-chlorobenzotriflouride (BCBTF). ![]() To do this, they were reformulated using water as a carrier or using the “exempt” (doesn’t cause ground-level ozone in the presence of sunlight) solvents identified by the SCAQMD. To meet the new rule, base-coats must emit less than 3.5 lbs. Regular solvent-based basecoats typically emit 5 to 7 lbs. of VOC have been for sale in Southern California for years, that was how the shops met the 3.5-lb. To comply with these new rules, paint companies created basecoat products that met these VOC limits.Ĭlearcoats with only 2.1 lbs. of VOC and basecoats must emit less than 3.5 lbs. In 2008, the SCAQMD amended Rule 1151 to say that clearcoats must be less than 2.1 lbs. In 1987, the SCAQMD, home to some of the worst air pollution in the country, passed Rule 1151 that mandated that body shops within their jurisdiction use spray guns with 65 percent transfer efficiency (High Volume, Low Pressure met that requirement), and that a “sandwich” of basecoat color and clear topcoat not exceed 3.5 lbs. Who’s regulating who and what are their concerns? This whole thing started in Southern California when the South Coast Air Quality Management District (SCAQMD) amended their original rule from 1987. ![]()
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