US PATENT SUBCLASS 558 / 117
.~.~.~.~ Reactant is a phosphorus ester (e.g., transesterification, etc.)

Current as of: June, 1999
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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}
117.~.~.~.~ Reactant is a phosphorus ester (e.g., transesterification, etc.) {2}
118  DF  .~.~.~.~.~> And reactant having alcoholic or phenolic -XH group, wherein X is chalcogen (and wherein X of -XH may be replaced by substituted or unsubstituted ammonium, or by a Group IA or IIA light metal) {1}
120  DF  .~.~.~.~.~> The phosphorus ester reactant has hydrogen or metal bonded directly to phosphorus

DEFINITION

Classification: 558/117

(under subclass 89) Processes in which a phosphorus ester is a reactant.

(1) Note. This subclass provides for transesterification processes wherein one, or more, of the ester groups in a phosphorus ester compound is replaced by another ester group.