US PATENT SUBCLASS 526 / 219.6
.~.~.~.~.~ Azobisisobutyronitrile (AIBN)

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}
217  DF  .~.~.~ Material contains organic nitrogen compound {2}
218.1  DF  .~.~.~.~ Organic compound contains N=N or N-N group {5}
219.6.~.~.~.~.~ Azobisisobutyronitrile (AIBN)

DEFINITION

Classification: 526/219.6

Azobisisobutyronitrile (AIBN):

(under subclass 218.1) Subject matter wherein the compound which contains the N=N or N-N group is azobisisobutyronitrile (AIBN)or the same compound described in chemically equivalent terms, i.e., 2, 2-azobisisobutyronitrile, 2, 2-azobis(2-methylpropionitrile), alpha, alpha - azodisobutyronitrile, dinitrile azoisobutyrate, azodisobutyric acid nitrile, etc.

SEE OR SEARCH CLASS

521, Synthetic Resins or Natural Rubbers, Glossary,

50+, for a process of utilizing AIBN both to polymerize a monomer as well as to foam the resulting polymer.