Resinificationof methylolmelamines is postulated as proceeding through either the methylene or the ether linkage.The wide range of properties of hydrocarbonsoluble melamine-aldehyde-alcohol resins can be explained by etherification as the mechanism whereby the final resins are formed from the methylolmelamines. Heat stability of melamine resins, as compared to urea resins, may be due to the absence of carbonyl groups.
1. The action of sodium on ditolyltrichloro-ethane in boiling toluene results in the formation of p,p'-dimethylstilbene and p,p'-dimethyltolane.2. A similar reaction takes place when sodium acts on diphenyltrichloroethane.3. A possible interpretation of the reaction is given, involving the formation of monovalent carbon followed by the rearrangement of the phenyl groups within the molecule and the redistribution of the hydrogens between the molecules.
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