US PATENT SUBCLASS 568 / 727
.~.~.~.~.~.~.~.~ Preparing from a phenol and an aldehyde or ketone


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



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}
717  DF  .~.~.~.~.~ Polyphenols {4}
722  DF  .~.~.~.~.~.~ Two phenols bonded directly to the same carbon {1}
723  DF  .~.~.~.~.~.~.~ Identical phenols {3}
727.~.~.~.~.~.~.~.~ Preparing from a phenol and an aldehyde or ketone {1}
728  DF  .~.~.~.~.~.~.~>.~.~ Isopropylidene diphenol produced


DEFINITION

Classification: 568/727

Preparing from a phenol and an aldehyde or ketone:

(under subclass 723) Processes wherein the compound is produced by reacting a phenol with an aldehyde or ketone.