By Allara D.L., Hawkins W.L.
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Shortly after World War I, Rohm introduced a new acrylate synthesis, noting that an acrylate is formed in good yield from heating ethylene cyanohydrin and sulfuric acid and alcohol. A major incentive for the development of a clear, tough plastic acrylate was in connection with the manufacture of safety glass. Ethyl methacrylate went into commercial production as early as 1933. , R. Kniewske, and J. Klein: Progr. Polym. Sci. 8, 373–468 (1982). F. I. -Plast. Technol. Eng. 31(7,8), 659–704 (1992).
Post-processing operations include cold forming; thermoforming; metal plating; painting; hot stamping; ultrasonic, spin, and vibrational welding; and adhesive bonding. Applications Its broad property balance and wide processing window have allowed ABS to become the largest selling engineering thermoplastic. ABS enjoys a unique position as a “bridge” polymer between commodity plastics and other higher performance engineering thermoplastics. Table 3 summarizes estimates for 1988 regional consumption of ABS resins by major use.
Toxicity varies with level, frequency, duration, and route of exposure. The simple higher esters of acrylic acid are usually less absorbed and less toxic than lower esters. In general, acrylates are more toxic than methacrylates. TABLE 1. 3 kPa = 1 atm unless otherwise noted. 27 kPa. 6 kPa. d At 20◦ C, unless otherwise noted. e At 25◦ C. 5 125c 18 ACRYLIC ESTER POLYMERS Current TLV/TWA values are provided in Material Safety Data Sheets provided by manufacturers on request. WILLIAM BAUER, JR. , Philadelphia, PA, 1986.
Stabilization and Degradation of Polymers by Allara D.L., Hawkins W.L.