Method for removing trifluoroethanol from liquids

Details Method for removing trifluoroethanol from liquids Method for removing trifluoroethanol from liquids

2006-01-31

2006-01-31

Richter, Johann (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C560S227000, C568S840000, C568S841000, C568S842000, C568S868000

Reexamination Certificate

active

06992213

ABSTRACT:
Trifluoroethanol can be isolated from organic liquids that are contaminated by trifluoroethanol by bringing the contaminated liquid into contact with a molecular sieve having a pore size ranging between 0.5 and 1.0 nm, e.g., with molecular sieve 13X. This enables, for example, trifluoroacetic acid trifluoroethyl esters, bis(trifluoroethyl)carbonate or trifluoroethyl esters of phosphoric, phosphonic or phosphinic acid to be purified.

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