US PATENT SUBCLASS 528 / 351
.~.~.~.~ Polymerizing in the presence of a specified material other than a reactant

Current as of: June, 1999
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528 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {23}
271  DF  .~ FROM CARBOXYLIC ACID OR DERIVATIVE THEREOF {10}
332  DF  .~.~ With organic amine, or from organic amine salt of a carboxylic acid {2}
350  DF  .~.~.~ From carboxylic acid having three or more carboxylic acid groups or derivatives thereof, and an organic amine, or from an organic amine salt of a tri-or higher carboxylic acid {3}
351.~.~.~.~ Polymerizing in the presence of a specified material other than a reactant

DEFINITION

Classification: 528/351

(under subclass 350) Subject matter wherein an organic amine salt of a tri- or higher carboxylic acid or acid derivative is polymerized in the presence of a specified material, or wherein a tri- or higher carboxylic acid or acid derivative thereof and an organic amine are polymerized in the presence of a specified material.

SEE OR SEARCH CLASS

520, Synthetic Resins or Natural Rubbers, see the Glossary for a definition of the term "specified material".