US PATENT SUBCLASS 568 / 698
.~.~.~.~ Preparing by dehydration of an organic hydroxy containing compound (H of -OH may be replaced by a Group IA or IIA light metal)

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568 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {4}
300  DF  .~ OXYGEN CONTAINING (E.G., PERCHLORYLBENZENE, ETC.) {11}
579  DF  .~.~ Ethers {11}
671  DF  .~.~.~ Acyclic {7}
698.~.~.~.~ Preparing by dehydration of an organic hydroxy containing compound (H of -OH may be replaced by a Group IA or IIA light metal)

DEFINITION

Classification: 568/698

Preparing by dehydration of an organic hydroxy containing compound (H of -OH may be substituted by M):

(under subclass 671) Processes which include preparing the compound by removing water from an organic hydroxy containing compound.