US PATENT SUBCLASS 524 / 559
.~.~.~.~.~ Ester contains two or more ester groups or at least one carboxylic ester group and at least one free acid group; or carboxylic acid contains two or more free carboxyl groups


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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
*  DD  .~ PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF (Class 523, subclass 1) {17}
1  DF  .~.~ Adding a NRM to a preformed solid polymer or preformed specified intermediate condensation product, composition thereof; or process of treating or composition thereof {31}
543  DF  .~.~.~ Polymer derived from ethylenic reactants only {11}
556  DF  .~.~.~.~ From carboxylic acid or ester thereof monomer {5}
559.~.~.~.~.~ Ester contains two or more ester groups or at least one carboxylic ester group and at least one free acid group; or carboxylic acid contains two or more free carboxyl groups


DEFINITION

Classification: 524/559

Ester contains two or more ester groups or at least one carboxylic ester group and at least one free acid group; or carboxylic acid contains two or more free carboxyl groups:

(under subclass 556) Subject matter wherein the monomer contains at least two carboxylic acid ester groups, two or more carboxylic acid groups, or at least one carboxylic acid group and at least one carboxylic acid ester group.