US PATENT SUBCLASS 568 / 620
.~.~.~.~.~.~.~ And cyclic ether

Current as of: June, 1999
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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}
606  DF  .~.~.~ Plural oxyalkylene groups bonded directly to each other {3}
613  DF  .~.~.~.~ Acyclic {6}
618  DF  .~.~.~.~.~ Preparing from organic hydroxy containing compound (H of -OH may be replaced by a Group IA or IIA light metal) {1}
619  DF  .~.~.~.~.~.~ From polyhydroxy containing compound {1}
620.~.~.~.~.~.~.~ And cyclic ether

DEFINITION

Classification: 568/620

And cyclic ether:

(under subclass 619) Processes which include preparing the compound by reacting an organic polyhydroxy containing compound and a cyclic ether.