Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
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).
Ogawa Shinsaku
Takeuchi Hiroshi
Yamazaki Yoshiaki
Asahi Kasei Kogyo Kabushiki Kaisha
Breitenstein G.
Helfin Bernard
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