申请人:Asahi Glass Company Ltd.
公开号:US05523476A1
公开(公告)日:1996-06-04
A process for producing tetrafluorophthalic anhydride, which comprises chlorinating tetrachlorophthalic anhydride to obtain 3,3,4,5,6,7-hexachloro-1-[3H]-isobenzofuranone, then fluorinating it to obtain 3,4,5,6-tetrafluorophthaloyldifluoride and/or 3,3,4,5,6,7-hexafluoro-1-[3H]-isobenzofuranone, and further reacting the tetrafluorophthalolyldifluoride and/or the hexafluoro-1-[3H]-isobenzofuranone with an inorganic base or an organic acid to obtain tetrafluorophthalic anhydride.
一种生产四氟邻苯二酐的方法,包括氯化四氯邻苯二酐以得到3,3,4,5,6,7-六氯-1-[3H]-异苯并呋喃酮,然后氟化它以得到3,4,5,6-四氟邻苯二酰二氟化物和/或3,3,4,5,6,7-六氟-1-[3H]-异苯并呋喃酮,然后进一步将四氟邻苯二酰二氟化物和/或六氟-1-[3H]-异苯并呋喃酮与无机碱或有机酸反应以得到四氟邻苯二酐。