Having -oh Bonded Directly To Carbon (wherein H Of -oh May Be Replaced By Metal Or Ammonium) Patents (Class 508/583)
- Plural benzene rings bonded to each other, to the same acyclic carbon or to the same cyclic carbon chain (e.g., phenol-aldehyde condensates, etc.) (Class 508/585)
- The -OH group is in salt form (Class 508/586)
- Halogen or additional -OH attached directly or indirectly to the benzene ring by nonionic bonding (Class 508/587)