US PATENT SUBCLASS 562 / 77
.~.~.~.~.~ Hydroxy group or nonsulfonate sulfur attached indirectly to a benzene ring by acyclic nonionic bonding

Current as of: June, 1999
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562 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {41}
30  DF  .~ Sulfonic acids or salts thereof (i.e., compounds containing the sulfonate group, -S(=O)(=O)-O- wherein the single bonded oxygen is bonded directly to hydrogen, or to a group IA or IIA light metal or to substituted or unsubstituted ammonium) {15}
45  DF  .~.~ Benzene ring bonded directly to the sulfonate sulfur (e.g., purification and neutralization of benzene sulfonic acids, etc.) {11}
74  DF  .~.~.~ Nonsulfonate chalcogen attached indirectly to the sulfonate group by nonionic bonding {6}
76  DF  .~.~.~.~ Plural carbons bonded directly to the nonsulfonate chalcogen (e.g., ethers, sulfones, etc.) {1}
77.~.~.~.~.~ Hydroxy group or nonsulfonate sulfur attached indirectly to a benzene ring by acyclic nonionic bonding

DEFINITION

Classification: 562/77

(under subclass 76) Compounds wherein a benzene ring is attached indirectly to a hydroxy group or to a nonsulfonate sulfur by acyclic nonionic bonding.

(1) Note. Examples of compounds provided for herein are: [figure] [figure]