Process for producing crystals of salt of acidic amino acid and

Details Process for producing crystals of salt of acidic amino acid and Process for producing crystals of salt of acidic amino acid and

1991-09-30

1993-07-13

Kunemund, Robert

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156600, 156DIG90, 156DIG113, 562562, 564477, C30B 706

Patent

active

052270076

ABSTRACT:
Disclosed is a process for producing crystals of a salt of an acidic amino acid and a basic amino acid, which comprises adding a water-miscible solvent to an aqueous solution of the salt to prepare a solution 90% or more saturated or supersaturated with the salt, heating the resultant solution under reflux until the formation of crystals stops, adding gradually a water-miscible solvent to the solution under reflux to form crystals of the salt, and recovering the crystals from the resultant mixture.

REFERENCES:
patent: 3360549 (1967-12-01), Marumo et al.
patent: 3952060 (1976-04-01), Huber-Emden et al.
patent: 4052372 (1977-10-01), Finet et al.
patent: 4420432 (1983-12-01), Chibata et al.
patent: 4608373 (1986-08-01), Shibanuma et al.
patent: 5089492 (1992-02-01), Gerling et al.

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