US PATENT SUBCLASS 528 / 325
.~.~.~.~ Two or more lactam reactant or with an amino-containing carboxylic acid or derivative of an amino-containing 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}
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}
325.~.~.~.~ Two or more lactam reactant or with an amino-containing carboxylic acid or derivative of an amino-containing carboxylic acid

DEFINITION

Classification: 528/325

(under subclass 323) Subject matter wherein a polymer has been derived from (1) at least two lactam-containing reactants, or (2) at least one lactam reactant and (a) at least one amino-containing carboxylic acid, or (b) at least a derivative of an amino-containing carboxylic acid.