摘要 |
A method for continuously preparing biuret polyisocyanate, comprising: a mixed solution of a diisocyanate and a catalyst with water vapour, in an aerosol form, are continuously reacted in a first reactor; the product obtained therefrom is brought into a second reactor for a further reaction; a tail gas from the second reactor is condensed and refluxed, and the non-condensable gas is brought into a tail gas treatment system; a reaction liquid obtained in the second reactor is further reacted in a third reactor; and then separation is performed for removing monomers, so as to obtain biuret polyisocyanate. |
申请人 |
WANHUA CHEMICAL GROUP CO., LTD. |
发明人 |
SHI, BIN;SHANG, YONGHUA;LI, HAIJUN;HUA, WEIQI;LI, YUAN;MA, ENSEN;WANG, BIAO |