US PATENT SUBCLASS 526 / 269
.~.~.~ Hetero-oxygen ring compound contains a carbonate group, i.e., -O-C(=O)-O as ring atoms

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526 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {8}
72  DF  .~ POLYMERS FROM ONLY ETHYLENIC MONOMERS OR PROCESSES OF POLYMERIZING, POLYMERIZABLE COMPOSITIONS CONTAINING ONLY ETHYLENIC MONOMERS AS REACTANTS OR PROCESSES OF PREPARING {43}
266  DF  .~.~ From monomer containing oxygen as part of a heterocyclic ring {5}
269.~.~.~ Hetero-oxygen ring compound contains a carbonate group, i.e., -O-C(=O)-O as ring atoms

DEFINITION

Classification: 526/269

Hetero-oxygen ring compound contains a Carbonate group, i.e., -OO- as ring atoms:

(under subclass 266) Subject matter wherein the unsaturated monomer has at least one heterocyclic ring which contains as ring atoms thereof a -OO- group (i.e., cyclic carbonate).