C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/562.7
C07C 120/00 (1980.01)
Patent
CA 1037059
Abstract of the Disclosure Diaminomaleonitrile which is produced by the tetramerization of hydrogen cyanide is purified by heating a crude diaminomaleonitrile in an inert liquid or in an inert atmosphere at a temperature of 90 to 140°C, preferably 100 to 120°C, and then extracting pure diaminomaleonitrile having a purity of about 99% from said heated crude diaminomaleonitrile with solvent.
234534
Fukuda Yoshiaki
Kobayashi Tatsumi
Takakura Yutaka
Yoshino Sadafumi
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