Automobile manufacturers, decline

In the United States, fibers and injection mol ding are the main appHcations for polypropylene (Table 8), followed by film. In Europe and Japan, injection mol ding appHcations predominate (Table 10). This market area is more likely to decline in economic recession, as consumers postpone purchases of apphances and automobiles. Film appHcations are important in both regions, but fibers are a much less important use for polypropylene in Japan than in other developed regions. The heavy use of polypropylene nonwovens in the manufacture of disposable diapers and similar products, and the wide use of polypropylene carpets in the United States, account for the greater consumption of fibers. 

The third principal source of nitrobenzene is the atmospheric photo-chemical reaction of nitrogen oxides with benzene, which presumably is derived from automobile fuels and, to a lesser extent, solvent uses of benzene (Dorigan and Hushon 1976). As benzene releases decline, this source (not quantified) should diminish as well. The contribution of this source is difficult to estimate since most measurements of ambient atmospheric nitrobenzene have been made in urban areas near sites of nitrobenzene manufacture, use, and disposal (see Section 5.4.1). Seasonal variations and those associated with air pollution episodes suggest that this source, although limited, may form a significant proportion of nonoccupational human exposure. 

PVC While the PVC market is expected to decline through 2010, growth is also forecasted for the following PO, used in making urethane foam propylene glycol, used in producing unsaturated polyesters pharmaceuticals and foods isocyanates, used in the manufacture of products used in the construction and automobile industries and epoxy resins, made by reacting bisphenol A with epichlorohydrin. 

Decreased use of chrome by automobile and small-appliance manufacturers and mandated recycling of chromium wastes in the electroplating industry have led to a decline in Na2S04 produced from this source. 

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