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AssigneeHuntington Laboratories, Inc.
InventorsKim R. Smith, Frederick M. Boyd, Samih S. Abouhalkah
Estimating the term…
A quaternary ammonium compound solution comprising from about 50% to about 80% of a quaternary ammonium compound and from about 20% to about 50% of a solvent. The solvent being from about 25% to about 100% of alkylene glycol with the remainder being water. The method of making quaternary ammonium compounds comprises reacting methyl chloride and/or benzyl chloride and dialkylmethylamine and/or alkyldimethylamine in an alkylene glycol to completion and diluting the same with sufficient water to a solution in which the alkylene glycol is from about 25% to about 100% of the solvent component of the total solution and the quaternary ammonium compound is from about 50% weight to about 80% weight of the quaternary ammonium compound solution.
A method of making a non-crystallizing quaternary ammonium compound solution having a flashpoint of at least 200.degree. C. and a concentration of up to about 80% by weight quarternary ammonium compound, said method comprising the steps of dissolving a dialkylmethylamine reactant and an alkyl halide reactant in an alkylene glycol or a dialkylene glycol having the formula ##STR4## where R' is either H or CH.sub.3 and n is 1 or 2, and heating said reactant solution to elevated temperatures until reaction completion.
Dependencies are inferred from the claim text.