SILICONE RESINS AND MATERIALS.

SEC. 1724. SILICONE RESINS AND MATERIALS. Part 4 of schedule 4 is amended— (1) by amending subpart A— (A) by striking out “provided for in part 1C” in headnote 1 and inserting “, other than silicones, provided for in part 1”, and (B) by amending headnote 2 to read as follows: “2. (a) For purposes of this subpart, the term ‘synthetic plastics materials’— “(i) embraces products formed by the condensation, polymerization, or copolymerization of organic chemicals and to which an antioxidant, color, dispersing agent, emulsifier, extender, filler, pesticide, plasticizer, or stabilizer may have been added; and “(ii) includes silicones (including fluids, resins, elastomers, and copolymers) whether or not such materials are solid in the finished articles. “(b) The products referred to in subdivision (a) contain as an essential ingredient an organic substance of high molecular weight; and, except as provided in subdivision (a)(ii), are capable, at some stage during processing into finished articles, of being molded or shaped by flow and are solid in the finished article. The term includes, but is not limited to, such products derived from esters of acrylic or methacrylic acid; vinyl acetate, vinyl chloride resins, polyvinyl alcohol, acetals, butyral, formal resins, polyvinyl ether and ester resins, and polyvinylidene chloride resins; urea and amino resins; polyethylene, polypropylene, and other polyalkene resins; 102 STAT. 1279 siloxanes, silicones, and other organosilicon resins; alkyd, acrylonitrile, allyl, and formaldehyde resins, and cellulosic plastics materials. These synthetic plastics materials may be in solid, semi-solid, or liquid condition such as flakes, powders, pellets, granules, solutions, emulsions, and other basic crude forms not further processed.”, (C) by inserting after item 445.54 the following new item with the article description having the same degree of indentation as the article description for item 445.54: “ 445.55 Silicone resins and materials 3% ad val. Free (A.E,I) 25% ad val. ”, and (D) by redesignating item 445.56 as item 445.60; and (2) by amending headnote 2 to subpart B by adding at the end thereof the following: “(c) For purposes of the Tariff Schedules, the term ‘rubber’ does not include silicones.”.