Distillation: processes – separatory – With chemical reaction – Including step of adding catalyst or reacting material
Patent
1983-09-02
1988-01-19
Bond, Robert T.
Distillation: processes, separatory
With chemical reaction
Including step of adding catalyst or reacting material
203 27, 203 35, 203 36, 540540, C07D20116, B01D 310, B01D 334
Patent
active
047203285
ABSTRACT:
A method for removing impurities from caprolactam is disclosed. The method comprises the sequential steps of treating the impure caprolactam with phosphorus pentoxide so that the impurities react therewith to form high boiling species and then distilling the so treated impure lactam to recover substantially pure caprolactam as overhead, with the impurities remaining as bottoms.
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Stevens "Polymer Chemistry", An Introduction, Addison-Wesley (1975), pp. 281-286.
Corbin Tom F.
Dellinger Jack A.
Wagener Kenneth B.
Akzona Incorporated
Bond Robert T.
Boone Jeffrey S.
Hall Jack H.
Stempel Alan R.
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