Quaternary ammonium carbonate compositions and preparation thereof

摘要: Quaternary ammonium carbonates having the formula ##STR1## wherein R 1 is a C -C 20 alkyl or aryl-substituted group and 2 8 have been synthesized. These compounds compositions further comprising corresponding quaternary bicarbonate ##STR2## same different and/or metal carbonate ##STR3## group; M non-coupler metal, are prepared by reacting two reactants, alkyl, chloride hydroxide, in solvent 4 normal alcohol. The amount of reactant that sufficient to yield chloride, optionally unreacted hydroxide. resultant hydroxide any then reacted with carbon dioxide carbonate. Also provided method for preserving wood substrate. Accordingly, substrate treated coupler-free preservative system biocidal effective quats above, preferably those solvent.