US PATENT SUBCLASS 568 / 629
.~.~.~.~ Preparing by hydroxylation of benzene ring

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}
626  DF  .~.~.~ Benzene ring containing {7}
629.~.~.~.~ Preparing by hydroxylation of benzene ring

DEFINITION

Classification: 568/629

Preparing by hydroxylation of benzene ring:

(under subclass 626) Processes which include preparing the compound by oxidizing an aromatic starting material in the presence of water whereby one or more hydroxy groups are added to a benzene ring.