| abstract |
A method of manufacturing 2,4-hexadiyne-1,6-diol by the oxidative coupling of propargyl alcohol, in the presence of an aliphatic C4 alcohol solvent is disclosed. The 2,4-hexadiyne-1,6-diol is completely dissolved in the butanol. Residual salts dissolved in the butanol solution at the end of the reaction are separated out by electrodialysis. The salt-containing stream which is separated out and contains the catalyst salts, water, and butanol is suitable as a reaction mixture, and can be recycled to the reactor. |