US PATENT SUBCLASS 526 / 197
.~.~.~.~.~ With free oxygen or peroxy compound

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}
195  DF  .~.~.~ Material contains boron compound other than boron trihalide or non-metal organic complex of boron trihalide {1}
196  DF  .~.~.~.~ Boron bonded to hydrogen or carbon atom compound {2}
197.~.~.~.~.~ With free oxygen or peroxy compound

DEFINITION

Classification: 526/197

(under subclass 196) Processes wherein the boron compound is in admixture with free oxygen or with a compound that contains an -O-O- group.

(1) Note. This subclass includes only specified compositions wherein there is a desired and intentional contact between air and the boron compound and does not include the use of air as a blanket or carrier gas.