| 摘要 |
PURPOSE:To obtain the titled compound on an industrial scale, at a low cost, by heating 2-{beta-imidazolyl-(1')}-ethyl-4,6-diamino-s-triazine together with powdery or granular heat transfer medium in the presence of a polymerization inhibitor under reduced pressure. CONSTITUTION:The objective compound of formula II useful as a comonomer can be produced from an inexpensive raw material with simple operation, in high yield, and accordingly by a method suitable for the practice on an industrial scale, by heating the compound of formula I together with a powdery or granular heat transfer medium such as quartz sand, sea sand, river sand, glass powder, silica powder, alumina powder, iron powder, copper powder, etc., in the presence of a polymerization inhibitor such as sodium sulfide, potassium sulfide, hydroquinone, copper sulfate, beta-naphthylamine, etc., under a vacuum of 5-20mmHg at 80-320 deg.C. The compound of formula I used as the starting compound can be pro- duced easily from acrylonitrile, imidazole and dicyandiamide by conventional method.
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