US PATENT SUBCLASS 558 / 108
.~.~.~.~.~ And -C(=X)- containing reactant, wherein X is chalcogen


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

Internet Version by PATENTEC © 1999      Terms of Use



558 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {21}
70  DF  .~ Phosphorus esters (i.e., compounds having the phosphorus ester group, wherein trivalent or pentavalent phosphorus and carbon are bonded directly to the same divalent chalcogen, and wherein the carbon may be single bonded to any atom but may be multiple bonded only to carbon) {18}
87  DF  .~.~ Processes {19}
89  DF  .~.~.~ Forming the phosphorus ester group {7}
104  DF  .~.~.~.~ Reactant has -XH, wherein X is chalcogen, bonded directly to phosphorus (wherein H of -XH may be replaced by substituted or unsubstituted ammonium, or by a Group IA or IIA light metal) {6}
108.~.~.~.~.~ And -C(=X)- containing reactant, wherein X is chalcogen


DEFINITION

Classification: 558/108

(under subclass 104) Processes wherein an additional reactant contains -C(=X)-, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).