C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/594
C07C 209/12 (2006.01)
Patent
CA 1260501
Abstract A continuous process for the preparation of dimethyldi- allylammonium chloride In the continuous process described for the preparation of dimethyldiallylammonium chloride by reaction, with stirring, of dimethylamine, allyl chloride and alkali metal hydroxide which is dissolved in water, the reaction is carried out in at least two stirred vessels arranged in the form of a cascade. Dimethylamine and allyl chlor- ide in the stoichiometric amount in each case and only 60 to 95 mol % of the stoichiometrically necessary amount of alkal; metal hydroxide are fed to the first stirred ves- sel and conducted through the vessel at a temperature of 20 to 70°C with a residence time such that the product leaving the vessel and flowing to the further vessels still contains at most 10 mol % of free amine, mol per- centages being related to the molar amount of dimethyl- amine employed; the alkali metal hydroxide lacking in the first stirred vessel compared to the stoichiometric amount is fed continuously to the further stirred vessels mentioned and in these vessels, at a temperature of 20 to 70°C, a residence time is set such that the product leav- ing the vessel still contains at most 2 mol % of free amine in each case. The desired dimethyldiallylammonium chloride is obtained from the product leaving the stirred vessel cascade.
515740
Aigner Rudolf
Blaschke Gunter
Muller Gunter
Clariant Produkte (deutschland) Gmbh
Fetherstonhaugh & Co.
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