2230. ------. [METALLGESELLSCHAFT A. G.]. [Catalyst Regeneration.] Indian Patent 24,733, no date. Schmidt, J., Das Kohlenoxyd. Akad. Verlagsgesell., Leipzig, 1950, p. 156.

PATENTS

2230. ------. [METALLGESELLSCHAFT A. G.]. [Catalyst Regeneration.] Indian Patent 24,733, no date. Schmidt, J., Das Kohlenoxyd. Akad. Verlagsgesell., Leipzig, 1950, p. 156.

Paraffin is removed by extraction with N- or O-containing solvents (acetone, esters, anilin, nitrobenzene, triethanolamine).