CAS: 56047-23-5; Sodium 2-Carboxy-4-Chlorobenzoate

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CAS号89-20-3 4-氯邻苯二酸 | CAS号7147-90-2 4-氯酞酰亚胺 | CAS号118-45-6 4-氯代苯酐 | CAS号173962-58-8 5-chloro-2-hydr... | CAS号19641-29-3 6-氯-1(3H)-异苯并呋喃酮

专利信息

专利号:US-3965125-A
优先权日:1971-02-08
标题:Synthesis of certain bis(phthalic anhydrides)
发明人：MEYERS ROBERT A
权利人:TRW INC
摘要:Monomeric high molecular weight dianhydrides or tetraacids can be produced by the nucleophilic coupling of a halo substituted phthalimides acid and an aliphatic or aromatic compound having polyfunctional groups capable of reacting with the halo moiety of the phthalinide followed by hydrolysis and dehydration. Specifically, 4-chlorophthalate sodium salt is converted to an imide to reduce side reactions with the carboxylic acid groups prior to reaction with 4,4'-disodiumdiphenylene oxide sulfone or 2,2-di (4-sodium phenoxide) propane. After the reaction of the imide and the sulfone or propane compounds, the diimide formed is converted to the corresponding dianhydride.

专利号:US-4077973-A
优先权日:1975-05-01
标题:Synthesis of metal phthalocyanines
发明人：COLBERS GERARDUS JOHANNES BAPT; EINERHAND JOHAN JOZEF; ERKENS LEONARDUS JOHANNES HUBE; NICOLA HUBERTUS BARTHOLOMEUS; SNIJDERS JACOBUS MICHIEL HUBER
权利人:HERCULES INC
摘要:Metal phthalocyanines having a narrow particle size distribution are synthesized via the phthalodinitrile or phthalic anhydride-urea route using hexachlorobutadiene as the diluent. Higher yields and shorter reaction times are also realized by carrying out the syntheses in this manner.