TREATMENT OF COAL EXTRACTS
Phenolic compositions which may be reacted with aldehyde or aldehyde donors, e.g., formaldehyde or hexamine, to form resinous or resinifiable compositions may be manufactured by reacting a solution or extract of coal with a phenol.
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Zusammenfassung: | Phenolic compositions which may be reacted with aldehyde or aldehyde donors, e.g., formaldehyde or hexamine, to form resinous or resinifiable compositions may be manufactured by reacting a solution or extract of coal with a phenol. |
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