US PATENT SUBCLASS 528 / 324
.~.~.~.~ With two or more reactants one of which is a carboxylic acid or derivative and one of which is an organic compound containing at least two amino nitrogen atoms

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}
310  DF  .~.~ From imide- or lactam-containing compound, or from an amino-nitrogen containing carboxylic acid, or derivative of an amino-nitrogen-containing carboxylic acid {9}
323  DF  .~.~.~ Lactam-containing reactant {3}
324.~.~.~.~ With two or more reactants one of which is a carboxylic acid or derivative and one of which is an organic compound containing at least two amino nitrogen atoms

DEFINITION

Classification: 528/324

(under subclass 323) Subject matter wherein a polymer has been derived from at least three reactants with the proviso that one reactant is a lactam-containing material, a second reactant is a carboxylic acid or derivative, and a third derivative is a compound containing two or more amino-nitrogen atoms.

(1) Note. This subclass provides for the reaction of two lactam reactants and a single polyamine reactant.

SEE OR SEARCH THIS CLASS, SUBCLASS:

263, (2) Note. for an explanation of the term "polyamine".

SEE OR SEARCH CLASS

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