Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing
Patent
1994-06-07
1996-07-16
Siegel, Alan
Organic compounds -- part of the class 532-570 series
Organic compounds
Halogen containing
C07C 1738
Patent
active
055368913
ABSTRACT:
A process for the purification of 1,1,1-trichloroethane contaminated with at least one undesirable C.sub.1 -C.sub.3 chlorocarbon, for example, 1,2-dichloroethane, 1,2-dichloroethylene and/or trichloroethylene, which process comprises contacting the impure 1,1,1-trichloroethane with a particulate adsorbent, the adsorbent being a particulate product of controlled pyrolysis of a polysulfonated macroporous crosslinked vinylaromatic polymer having a surface area of at least about 500 m.sup.2 /g, a micropore pore volume of at least about 0.24 ml/g, a macropore pore volume of less than about 0.24 ml/g and a ratio of macropore to micropore pore volume of less than 100 percent is provided.
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Siegel Alan
Vulcan Materials Company
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