| abstract |
(57) [Summary] [Objective] To provide an industrial production method capable of easily and efficiently producing a desired aliphatic polyisocyanate with a high yield and a reduced amount of phosgene. A method for producing an aliphatic polyisocyanate, which comprises reacting an aliphatic polyamine or its hydrochloride or carbonate with phosgene in an inert liquid medium while introducing an inert gas into the reaction system. |