US PATENT SUBCLASS 526 / 235
.~.~.~ Material contains free oxygen, air, or ozone

Current as of: June, 1999
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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}
89  DF  .~.~ Polymerizing in the presence of a specified material other than monomer {28}
235.~.~.~ Material contains free oxygen, air, or ozone

DEFINITION

Classification: 526/235

(under subclass 89) Subject matter wherein the specified additive contains oxygen, air, or ozone.

(1) Note. This subclass does not include the use of air as a blanket or carrier gas.

SEE OR SEARCH THIS CLASS, SUBCLASS:

227+, for a polymerization reaction in the presence of an oxygen-liberating peroxide compound.