US PATENT SUBCLASS 568 / 780
.~.~.~.~.~ Acyclic polycarbon hydrocarbyl group bonded directly to the 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}
700  DF  .~.~ Hydroxy containing (H of -OH may be replaced by a Group IA or IIA light metal) {10}
715  DF  .~.~.~ Benzene ring containing {8}
716  DF  .~.~.~.~ Phenols (H of -OH may be replaced by a Group IA or IIA light metal) {14}
780.~.~.~.~.~ Acyclic polycarbon hydrocarbyl group bonded directly to the benzene ring {4}
781  DF  .~.~.~.~.~.~> Isopropyl or isopropenyl group {1}
783  DF  .~.~.~.~.~.~> Preparing by isomerization
784  DF  .~.~.~.~.~.~> Tertiary butyl group {1}
790  DF  .~.~.~.~.~.~> Preparing by catalytic alkylation {4}

DEFINITION

Classification: 568/780

Acyclic polycarbon hydrocarbyl group bonded directly to the benzene ring:

(under subclass 716) Compounds wherein an acyclic group which consists of hydrogen and carbon, with at least two carbons, is bonded directly to the benzene ring.