Search results for "Phenol formaldehyde resin"
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Phosphonomethyl Substituted Phenols a New Class of Absorbers and Extractants for Metals
1991
Phosphonomethyl substituted phenols are readily obtained from o-hydroxymethylated phenols and trialkyl phosphites. The free acids, incorporated into phenol formaldehyde resins, act as cation exchangers with remarkable selectivity for different metals.