US PATENT SUBCLASS 203 / 60
.~.~ Ester

Current as of: June, 1999
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203 /   HD   DISTILLATION: PROCESSES, SEPARATORY

50  DF  ADDING MATERIAL TO DISTILLAND EXCEPT WATER OR STEAM PER SE {2}
57  DF  .~ Organic compound {8}
60.~.~ Ester

DEFINITION

Classification: 203/60

(under subclass 57) Processes in which the organic compound is an ester.

(1) Note. For purposes of this subclass the term "ester" includes amide and nitrite.

SEE OR SEARCH THIS CLASS, SUBCLASS:

38, for a separatory distillation process in which an organic acid or an alcohol is added to form in situ an ester which aids separation by changing the relative volatility of components of the distilland.