US PATENT SUBCLASS 528 / 350
.~.~.~ 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

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.~.~.~ 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  DF  .~.~.~.~> Polymerizing in the presence of a specified material other than a reactant
352  DF  .~.~.~.~> Phosphorus- or sulfur-containing reactant
353  DF  .~.~.~.~> Carboxylic acid contains at least four carboxylic acid groups or is a derivative of a carboxylic acid containing at least four carboxylic groups

DEFINITION

Classification: 528/350

(under subclass 332) Subject matter wherein a polymer is derived from a tri or higher carboxylic acid or from a tri-carboxylic acid derivative thereof and an organic amine, or wherein a reactant is an organic amine salt of a tri or higher carboxylic acid or derivative.

(1) Note. The reactant may be the monoamine, diamine, or triamine salt of a tri-carboxylic acid, or it may be a higher amine of a higher polycarboxylic acid, or it may be an organic amine salt of a tri or higher carboxylic acid derivative.