US PATENT SUBCLASS 524 / 600
.~.~.~.~ Carboxylic acid contains three or more acid groups or derivative thereof

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}
599  DF  .~.~.~ From carboxylic acid or derivative reactant {3}
600.~.~.~.~ Carboxylic acid contains three or more acid groups or derivative thereof

DEFINITION

Classification: 524/600

Carboxylic acid contains three or more acid groups or derivative thereof:

(under subclass 599) Subject matter wherein the solid polymer is derived from a carboxylic acid containing three or more --OH groups or three or more derivative groups, or a combination of -OH and derivative groups which is three or more.