For years, the Pacific had been trying to get basic assistance in the synthetics field

For years, the Pacific had been trying to get basic assistance in the synthetics field from the Reich. However, the big German chemical cartels, I. G. Farben in particular, had harbored their patents; had, in fact, created a world monopoly in plastics, especially in the developments of the polyesters. By this means, Reich trade had kept an edge over Pacific trade, and in technology the Reich was at least ten years ahead. The interplanetary rockets leaving Festung Europa consisted mainly of heat-resistant plastics, very light in weight, so hard they survived even major meteor impact. The Pacific had nothing of this sort; natural fibers such as wood were still used, and of course the ubiquitous pot metals.

Philip K. Dick, The Man in the High Castle