| 摘要 |
NEW MATERIAL:1,6-Diisocyanato-2,5-dimethylhexane of formula. USE:Raw material of polyurethane. PREPARATION:The dimethyldiisocyanate of formula can be produced e.g. by reacting the hydrochloride, sulfate, phosphate, etc. of 1,6-diamino-2,5- dimethylhexane directly with phosgene in an inert solvent (e.g. benzene, toluene, methylene chloride, chloroform, ethyl acetate, etc.) at 60-230 deg.C. The compound of formula is a non-yellowing aliphatic diisocyanate having low viscosity and low vapor pressure, and is useful in the field requiring the above characteristics.
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