US PATENT SUBCLASS 524 / 605
.~.~.~.~.~.~ Derived from terephthalic acid or derivative

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}
601  DF  .~.~.~.~ From dicarboxylic acid or derivative and at least one polyol; or from a diester of a polycarboxylic acid as sole reactant {3}
604  DF  .~.~.~.~.~ At least one polyol containing only two -C-OH groups reactant {1}
605.~.~.~.~.~.~ Derived from terephthalic acid or derivative

DEFINITION

Classification: 524/605

Derived from terephthalic acid or derivative:

(under subclass 604) Subject matter wherein the carboxylic acid or derivative contains two carboxylic acid or derivative groups in para-position to each other and which carboxylic acid or derivative groups are directly bonded to nuclear carbon atoms of the same aryl ring.