PTA

W. G. Clark, Evaluation of 1,2,4-Butanetriol Trinitrate as the EiquidExplosive Plasticiserfor Cast Double Base Propellant Report 4, PTA, Dover, N.J., 1960. 

R. PeUon and K. Russel, Study of Melt Eoading the 105mm M1 Projectile with Composition B Containing Grade B Wax, TR 4854, PTA, Dover, N.J., 1975. 

A. O. PaUingston and M. Weinstein, Method of Calculation of Interior Ballistic Properties of Propellantsfrom ClosedBomb Data, report 2005, PTA, Dover, N.J., 1959. 

Various ways of overcoming the PTA oxidation problem have been incorporated into commercial processes. The predominant solution is the use of high concentrations of manganese and cobalt ions (2,248—254), optionally with various cocatalysts (204,255,256), in the presence of an organic or inorganic bromide promoter in acetic acid solvent. Operational temperatures are rather high (ca 200°C). A lesser but significant alternative involves isolation of intermediate PTA, conversion to methyl/)-toluate, and recycle to the reactor. The ester is oxidized to monomethyl terephthalate, which is subsequentiy converted to DMT and purified by distillation (248,257—264). 

H. J. Korte, H. Schroeder, and A. Schoengen, "The PTA Process of Huls Troisdorf AG," 1988 yUChE Summer National Meetings American Institute of Chemical Engineers, New York. 

In summary, beginning in 1993, toluene consumption for TDP has been increasing because of -xylene demand for DMT/PTA, and in turn for polyester fiber production. This trend is expected to continue in the future and whenever the -xylene market is stronger than the benzene market, TDP units will operate, and HD A units will be shut down or converted to TDP units. 

T. G. Otchy and K. J. Herbert "First Large Scale Catalytic Oxidation System for PTA Plant CO and VOC Abatement," paper presented at the... 

Cheremisj.uoff, N. P., and P. N. CheremisinofC Fiberglass-Rcinjorced Pta.siic.t Dcskbook. (Ann Arbor,. MI , nv. Arbor Science Pubiishers, Int., 1978). 

Although the initial radical formed from the reaction of Ce(rV) ion and acetylanilide (AA) and N-p-tolylacet-amide (PTA) has never been observed in the ESR studies, the presence of AA, PTA moieties in the end group of PAN obtained from initiating the CAN-AA, CAN-PTA system have been detected by the FT-IR spectra analysis method. Similar results were observed in the end group analysis of CAN-phenylcarbamate, CAN-N-acyl-N -tolylurea initiation systems. 

RELATIVISTIC CALCULATIONS OF PHOTOEMISSION-AND LEED-INTENSITIES FOR ORDERED AND DISORDERED ALLOYS APPLICATION TO CusPt and Cu Pta... 

Comprehensive comparative investigation of the main extraction parameters shows that 2-octanol is more selective than 1-octanol, with PTa/m equal to... 

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