| 525 / | HD | SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES |
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| * | DD | SYNTHETIC RESINS (Class 520, Subclass 1) {4} |
| 50 | DF | .~ MIXING OF TWO OR MORE SOLID POLYMERS; MIXING OF SOLID POLYMER OR SICP WITH SICP OR SPFI; MIXING OF SICP WITH AN ETHYLENIC AGENT; MIXING OF SOLID POLYMER WITH A CHEMICAL TREATING OR ETHYLENIC AGENT; OR PROCESSES OF FORMING OR REACTING; OR THE RESULTANT PRODUCT OF ANY OF THE ABOVE OPERATIONS {32} |
| 523 | DF | .~.~ Solid polymer contains more than one 1,2-epoxy group or is derived from reactant containing at least one 1,2-epoxy group {4} |
| 529 | DF | .~.~.~ Mixed with unsaturated reactant or polymer derived therefrom {1} |
| 530 | DF | .~.~.~.~ Wherein unsaturated reactant is a carboxylic acid or derivative or polymer derived therefrom {2} |
| 531 |  | .~.~.~.~.~ Wherein unsaturated reactant contains only one free carboxyl group |