US PATENT SUBCLASS 558 / 217
.~.~.~.~ Multiple bond between two acyclic carbons


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}
207  DF  .~.~ Divalent chalcogen double bonded directly to the phosphorus {2}
214  DF  .~.~.~ And two divalent chalcogens single bonded directly to the phosphorus {3}
217.~.~.~.~ Multiple bond between two acyclic carbons


DEFINITION

Classification: 558/217

(under subclass 214) Compounds which contain acyclic carbon multiple bonded directly to acyclic carbon.

(1) Note. An example of a compound provided for herein is: [figure]