In 1937 the production of tar-acid resins for molding accounted for about 40 percent of the total; those for surface coatings, about 25 percent; those for lamination, about 20 percent; and those for miscellaneous uses, about 15 percent. TABLE 3. _Tar-acid resins: United States production and sales 1927-37_ --------+-------------+---------------------------------------- | | Sales | Production +------------+--------------+------------ Year | (net resin | Quantity | | | content) | (net resin | Value | Unit value | | content) | | --------+-------------+------------+--------------+------------ | _Pounds_ | _Pounds_ | | 1927[1] | 13,452,230 | 13,084,313 | $6,094,656 | $0.47 1928[1] | 20,411,465 | 20,778,856 | 7,211,958 | .35 1929[2] | 26,235,792 | 25,129,701 | 9,869,274 | .39 1930[2] | 18,338,389 | 17,428,687 | 6,576,023 | .38 1931[2] | 22,647,000 | 21,496,000 | 6,646,000 | .31 1932[2] | 17,163,000 | 15,042,000 | 3,946,000 | .26 1933[2] | 31,697,780 | 28,002,799 | 6,564,670 | .23 1934[2] | 40,663,565 | 36,086,008 | 9,037,861 | .25 1935[2] | 52,731,728 | 46,733,378 | 8,730,438 | .19 1936[2] | 70,349,328 | 61,961,200 | 11,743,978 | .19 1937[2] | 79,844,825 | 73,545,880 | 13,300,870 | .19 --------+-------------+------------+--------------+---------- [1] All coal-tar resins. [2] Resins from tar acids only. Source: Compiled from annual reports of the Tariff Commission on dyes and other synthetic organic chemicals in the United States. Imports into the United States. Imports of tar-acid resins into the United States are dutiable under paragraph 28 at 7 cents per pound and 45 percent ad valorem based upon American selling price. Discussion of this rate, other restrictions upon imports in the earlier years, and of the rates upon articles made of these resins will be found on pages 59 to 61. Imports of tar-acid resins are not shown separately in official statistics; the classification under which such imports are entered includes all synthetic resins of coal-tar origin. Table 4 shows the quantity and value of imports of all coal-tar resins since 1918, and table 5 shows the principal sources of imports for certain years. Invoice analyses of imports in the last 3 years show only very small quantities of phenolic resins being imported. In 1934 there was an importation of 950 pounds of Bakelite molding compound; in 1935 imports of 100 pounds of molding compound and 22 pounds of aminophenol resin are recorded, and in 1936 imports of Bakelite filament compound totaled 250 pounds and other resins 8,851 pounds.