At least two commercial types of polystyrene resins are produced abroad. Both are made in Germany and marketed under the trade names Resoglas and Trolitul. Resoglas is a water-white, transparent thermoplastic resin softening at about 150° C. Its water absorption is low, it is nonoxidizing, and does not discolor on weathering and baking. Appreciable quantities are produced in Germany and the sales price there was reported to have been 40 cents per pound during 1936.
Molded Polystyrene Resins.
Source: Bakelite Corporation, 247 Park Avenue, New York, N. Y.
Small quantities of Resoglas and Trolitul have been imported from Germany in recent years. Table [9] shows the quantities imported in recent years.
Table 9.—Resoglas and Trolitul: United States imports for consumption, 1933-37
| Year | Resoglas (polystyrol) | Trolitul | ||||
|---|---|---|---|---|---|---|
| Quantity | Value | Unit value | Quantity | Value | Unit value | |
| Pounds | Pounds | |||||
| 1933 | 771 | (1) | 672 | (1) | ||
| 1934 | 991 | (1) | 200 | (1) | ||
| 1935 | 110 | $97 | $0.88 | 4,608 | $3,782 | $0.82 |
| 1936 | 2,220 | 1,901 | .86 | 4,671 | 3,641 | .78 |
| 19372 | None | None | 6,788 | 4,077 | .60 | |
1 Not available.
2 Preliminary.