| 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} |
| 878 | DF | .~.~ Carboxylic acid or derivative, excluding nitrile as sole derivative as reactant forming a solid polymer in the presence of a nonreactant material or mixture of materials having specified numerical limitations other than {1} |
| 879 |  | .~.~.~ Nitrogen-containing reactant |