Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1988-08-05
1990-07-31
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204138, 2041826, 2041823, B01D 1500
Patent
active
049448528
ABSTRACT:
A method for purifying a dipeptide ester by electrolysis in an electrolytic cell comprising an anode compartment, a cathode compartment and a central compartment partitioned by anion exchange membranes, which comprises supplying an aqueous dipeptide ester solution containing an inorganic acid to the central compartment defined by said anion exchange membranes, an aqueous solution containing a basic substance or an aqueous electrolyte solution containing a basic substance to the cathode compartment and an aqueous electrolyte solution to the anode compartment, supplying hydroxyl ions from the cathode compartment to the central compartment through the anion exchange membrane to neutralize the aqueous dipeptide ester solution containing the inorganic acid and removing anions of the inorganic acid in the aqueous dipeptide ester solution from the central compartment to the anode compartment through the anion exchange membrane.
REFERENCES:
patent: 4830720 (1989-05-01), Harada et al.
Chem. Abstract, vol. 99, No. 12, Sep. 19, 1983, p. 495, No. 95856q, Columbus, Ohio, US; JP-A-5855 577 (Yuasa Battery Co.).
Chem. Abstract, vol. 103, No. 24, Dec. 16, 1985, p. 456, No. 202814z, Columbus Ohio, US; JP-A-60 121 288.
Chem. Abstract, vol. 108, No. 7, Feb. 15, 1988, p. 780, No. 56620t, Columbus Ohio, US; JP-A--62 153 298.
Chem. Abstract, vol. 95, No. 3, Jul. 20, 1981, p. 759, No. 25637n, Columbus, Ohio, US; DE-A-3 013 701.
Akazawa Michihiro
Harada Tsuneo
Kurauchi Yasuhiro
Oyama Kiyotaka
Tokuda Akira
Niebling John F.
Phasge Arun S,.
Tosoh Corporation
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