| 摘要 |
1,171,351. Schiff's bases. UCB (UNION CHIMIQUE - CHEMISCHE BEDRIJVEN) S.A. 3 March, 1967, No. 10165/67. Heading C2C. [Also in Division C3] Schiff's bases are prepared by reacting equimolar amounts of dipropylene triamine or diethylene triamine with formaldehyde.
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