Process for the preparation of halogen-substituted phthalic anhydrides
申请人:OCCIDENTAL CHEMICAL CORPORATION
公开号:EP0334049A2
公开(公告)日:1989-09-27
A process for the preparation of halogen substituted phthalic anhydrides of the formula:
wherein X is a halogen, by the reaction of a halogen substituted tetrahydrophthalic phthalic anhydride of the formula:
or a geminal dihalogen substituted hexahydrophthalic anhydride of the formula:
in a vapor or melt phase while mixed with a halogen gas and in the presence of an activated carbon catalyst at an elevated temperature.
一种卤素取代的式邻苯二甲酸酐的制备工艺:
式中 X 为卤素的卤素取代的四氢邻苯二甲酸酐或式中 geminal 二卤素取代的六氢邻苯二甲酸酐的反应:
或式......的二卤素取代的六氢邻苯二甲酸酐的反应:
在气相或熔融相中,与卤素气体混合,并在活性炭催化剂存在下,在高温下进行的反应。
Process for the preparation of halogen-substituted phthalic anhydride
申请人:OCCIDENTAL CHEMICAL CORPORATION
公开号:EP0338215A2
公开(公告)日:1989-10-25
A process for the preparation of halogen substituted phthalic anhydrides of the formula:
wherein X is a halogen, by the reaction of a halogen substituted tetrahydrophthalic anhydride of the formula:
or a geminal dihalogen substituted hexahydrophthalic anhydride of the formula:
in a vapor or melt phase while mixed with a halogen at a temperature of 200-500°C.
一种卤素取代的式邻苯二甲酸酐的制备工艺:
式中 X 为卤素的卤素取代的四氢邻苯二甲酸酐或式中 geminal 二卤素取代的六氢邻苯二甲酸酐的反应过程:
或式......的二卤素取代的六氢邻苯二甲酸酐的反应:
在 200-500°C 的温度下,与卤素在气相或熔相中混合。
Preparation of substituted phthalic anhydride
申请人:OCCIDENTAL CHEMICAL CORPORATION
公开号:EP0330219A2
公开(公告)日:1989-08-30
A process for the preparation of halogen substituted phthalic anhydrides of the formula:
wherein X is a halogen, by the reaction of a halogen substituted tetrahydrophthalic phthalic anhydride of the formula:
or a geminal dihalogen substituted hexahydrophthalic anhydride of the formula:
in a vapor or liquid phace while mixed with an air flow and an activated carbon catalyst at an elevated temperature.
一种卤素取代的式邻苯二甲酸酐的制备工艺:
式中 X 为卤素的卤素取代的四氢邻苯二甲酸酐或式中 geminal 二卤素取代的六氢邻苯二甲酸酐的反应:
或式......的二卤素取代的六氢邻苯二甲酸酐的反应:
在气相或液相中,与气流和活性炭催化剂在高温下混合。
Process for the preparation of halophthalic anhydrides
申请人:OCCIDENTAL CHEMICAL CORPORATION
公开号:EP0417691A2
公开(公告)日:1991-03-20
Halophthalic anhydrides are prepared by the liquid phase reaction of a brominating agent with halogen substituted hexa- or tetra-hydrophthalic anhydrides.
卤代邻苯二甲酸酐是通过溴化剂与卤素取代的六或四氢邻苯二甲酸酐的液相反应制备的。
BADER, HUBERT;HOPF, HENNING;SIEPER, KERSTIN, CHEM. BER., 122,(1989) N, C. 383-384