US PATENT SUBCLASS 558 / 264
.~.~.~ Carbonyl bonded directly to the oxygen (i.e., compounds having the -O-C(=O) O-O-C(=O)- group; e.g., peroxydicarbonates, acyl peroxycarbonates, etc.)

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {21}
260  DF  .~ Carbonate esters (i.e, compounds having the -O-C(=O)O- group bonded directly to at least one carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) {8}
263  DF  .~.~ Oxygen bonded directly to the -O-C(=O)O- group by nonionic bonding (e.g., monoperoxycarbonates, etc.) {1}
264.~.~.~ Carbonyl bonded directly to the oxygen (i.e., compounds having the -O-C(=O) O-O-C(=O)- group; e.g., peroxydicarbonates, acyl peroxycarbonates, etc.)

DEFINITION

Classification: 558/264

(under subclass 263) Compounds wherein carbonyl, -C(=O), is bonded directly to the oxygen.

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