Synthetic Resins (class 520, Subclass 1)
- With N=C=X reactant wherein X is chalcogen (Class 527/301)
- With phenolic reactant (Class 527/303)
- With ketone reactant other than as a ketose (Class 527/304)
- With aldehyde or derivative as a reactant other than as an aldose (Class 527/305)
- With phosphorus-containing reactant (Class 527/310)
- With di- or higher ester of polycarboxylic acid; or with polycarboxylic acid or derivative and a compound containing two or more hydroxyl groups or salts thereof as reactants (Class 527/311)
- With nitrogen-containing reactant (Class 527/312)
- Ethylenically unsaturated reactant (Class 527/313)
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