528 / | HD | SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES |
* | DD | SYNTHETIC RESINS (Class 520, Subclass 1) {23} |
86 | DF | .~ FROM PHENOL, PHENOL ETHER, OR INORGANIC PHENOLATE {15} |
206 | DF | .~.~ Phenolic reactant contains at least one carboxylic acid group or is derivative thereof {3} |
209 | .~.~.~ With nonphenolic compound having at least two hydroxyl groups or salts thereof as reactant |