Aristech Chemical Corporation

The ammonolysis of phenol (61—65) is a commercial process in Japan. Aristech Chemical Corporation (formerly USS Chemical Division of USX Corporation) currently operates a plant at Ha verb ill, Ohio to convert phenol to aniline. The plant s design is based on Halcon s process (66). In this process, phenol is vapori2ed, mixed with fresh and recycled ammonia, and fed to a reactor that contains a proprietary Lewis acid catalyst. The gas leaving the reactor is fed to a distillation column to recover ammonia overhead for recycle. Aniline, water, phenol, and a small quantity of by-product dipbenylamines are recovered from the bottom of the column and sent to the drying column, where water is removed. 

Aristech Chemical Corporation, See Sunoco Chemicals Unit of Sunoco Inc. (US)... 

Aristech Chemical Corporation, See Sunoco Chemicals Unit of Smioco hic. (US), 217 Arizona Chemical, 217 Arizona Department of Agriculture, 290 Arizona Department of Eiivkonmental Quality, 290 Arizona Industrial Commission, 290 Arizona Poison and Drug hiforniation Center, 311 Arkansas Department of Eiivironmental Quality, 290 Arkansas Poison and Drug Infomiation Center, 311 Arkansas State Plant Board, 290 Aniienian National Academy of Sciences, 255 Armour Polymers Ltd., 168 Arris Intemational Corporation, 218 Arsenic acid, 19... 

The most recent report available on di- -octylphthalate lists three commercial producers Vista Chemical Company, Houston, Texas Aristech Chemical Corporation, Neville Island, Pennsylvania and Teknor Apex Company, Hebronville, Massachusetts and Brownsville, Texas (EPA 1993a). Additional reported producers include Eastman Kodak Company, Rochester, New York (USITC 1994) Tenneco Chemical, Inc., Chestertown, Maryland (EPA 1987a) Alfa Products, Morton Thiokol, Inc., Danvers, Massachusetts Primachem, Inc., Englewood Cliffs, New Jersey and GCA Chemical Corp., Stamford, Connecticut (HSDB 1995). Table 4-1 lists the U.S. facilities that manufacture or process di-w-octylphthalate. 

In the Halcon process, the amination of 7 takes place in the vapor phase with a silica-alumina catalyst (Scheme 3). Amination of phenol has the advantage of reduced capital costs, long catalyst life and high quality product. Excess ammonia favors high conversion of the mildly exothermic (AH = —544 kcal ruol 1) and reversible reaction, and also minimizes formation of byproducts. Generally, however, the price of phenol makes this process more expensive than the nitrobenzene routes. The last plant in the US to produce aniline from phenol by amination was operated by Sunoco Chemicals. It produced 140 million lbs./year-1, with diphenylamine, or DPA (8) as a coproduct, at Haverhill, Ohio, and ceased production in 200213,14. Aristech Chemical Corporation at one time operated a phenol-to-aniline process in the US. 

Vista Suf actants, Industrial Chemicals, andPlastics, Vista Chemical Company, Houston, Texas, 1987 Epal Unear Primary Alcohols, Ethyl Corporation, Baton Rouge, Louisiana, 1985 Exxal Alcohols, Exxon Chemical Company, Houston, Texas, 1988 Aristech Alcohols, 2-Ethtyhexanoi Aristech Chemical Corporation, Pittsbuigh, Pa., 1988 Technical bulletin, 2-Ethylhexanol, BASF Corporation, Parsippany, N.J., 1987. 

Raymond J. Ehrig, Chairperson Aristech Chemical Corporation... 

Aristech acrylic sheet technical bulletin 136 Cementing, supplier technical report (ADARIS 50-1032-01), Aristech Chemical Corporation 1987. 

Four companies operating five facilities appear to be the primary U.S. producers of DEHP. These are Aristech Chemical Company in Neville Island, Pennsylvania Hatco Chemical Company in Fords, New Jersey Teknor Apex Company in Brownsville, Tennessee and Hebronville, Massachusetts and Tennessee Eastman Company in Kingsport, Tennessee (Mannsville Chemical Products Corporation 1999). SRI (1998a), however, lists only Tennessee Eastman and Aristech Chemical Company, as above, but also adds Velsicol Chemical Corporation in Chestertown, Maryland, which was not included in the above list. 

The polyester resin used in this study, MR 13006 (Aristech Corporation), was supplied as a 60-wt% solution in styrene monomer. The epoxy resin, a digly-cidyl ether of bisphenol A (Epon 828), was obtained from Shell Chemical Company. The reactive liquid rubber, an amino-terminated butadiene-acrylonitrile copolymer (ATBN 1300 x 16), was provided by the BFGoodrich Company. The resin was mixed with additional styrene monomer to maintain the ratio of reactive unsaturation in the polyester-to-styrene monomer at 1 to 3. We added 1.5 wt% of tert-butylperbenzoate initiator to the solution, which we then degassed under vacuum. The mixture was poured between vertical, Teflon-coated, aluminum plates and cured under atmospheric pressure at 100 °C. In the modified compositions, the rubber was first dissolved in the styrene monomer, and then all the other components were added and the solution cured as described. In all the compositions, the ratio of the amine functions with respect to the epoxy functions was kept at 1 to ensure complete cure of the epoxy. 

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