Method for crystallization of diamine dicarboxylate

Details Method for crystallization of diamine dicarboxylate Method for crystallization of diamine dicarboxylate

1974-06-06

1976-04-20

Helfin, Bernard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 78R, C07C 8714

Patent

active

039520510

ABSTRACT:
A process for precipitating a crystalline diamine dicarboxylate which comprises dissolving the corresponding dicarboxylic acid in the aqueous liquid containing diamine dicarboxylate and adding the sufficient amount of the corresponding diamine to precipitate the desired product by neutralization.

REFERENCES:
patent: 2130947 (1938-11-01), Carothers
patent: 3294758 (1962-08-01), Gabler
moeller, Qualitative Analysis: McGraw- Hill, New York, pp. 118-127 (1958).
Mullin, Crystallization: Butterworths, London, pp. 165-166 (1961).
Ambler et al., Separation & Purification: Interscience Plbs. Inc., New York, pp. 304, 472-473 (1956).

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