| 528 / | HD | SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES |
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| * | DD | SYNTHETIC RESINS (Class 520, Subclass 1) {23} |
| 271 | DF | .~ FROM CARBOXYLIC ACID OR DERIVATIVE THEREOF {10} |
| 332 | DF | .~.~ With organic amine, or from organic amine salt of a carboxylic acid {2} |
| 335 |  | .~.~.~ From dicarboxylic acid or derivative thereof and an organic amine, or from an organic amine salt of a dicarboxylic acid {13} |
| 336 | DF | .~.~.~.~> Polymerizing in the presence of a specified material |
| 337 | DF | .~.~.~.~> Phosphorus- or sulfur-containing reactant |
| 338 | DF | .~.~.~.~> From at least two dicarboxylic acids or derivatives or mixtures thereof and at least two organic polyamines |
| 339 | DF | .~.~.~.~> From at least two dicarboxylic acids or derivatives or mixtures thereof {2} |
| 340 | DF | .~.~.~.~> From at least two organic polyamines |
| 341 | DF | .~.~.~.~> Heterocyclic-containing reactant other than cyclic acid anhydride as sole hetero ring |
| 342 | DF | .~.~.~.~> From reactant containing at least three amino-nitrogen-containing groups or with a carboxylic acid containing at least three carboxylic acid groups or deivatives thereof |
| 343 | DF | .~.~.~.~> Carboxylic acid containing (C=O)-(C=O) or is a derivative thereof, e.g., oxalic acid, etc. |
| 344 | DF | .~.~.~.~> Bridged- or fused-ring-containing reactant other than as anhydride fused to a nonfused- or bridged-ring system |
| 345 | DF | .~.~.~.~> Ethylenically unsaturated reactant |
| 346 | DF | .~.~.~.~> Cycloaliphatic ring-containing reactant |
| 347 | DF | .~.~.~.~> Aryl ring-containing reactant {1} |
| 349 | DF | .~.~.~.~> Reactant contains three carbon atoms directly bonded to a single carbon atom |