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公开(公告)号:US4447645A
公开(公告)日:1984-05-08
申请号:US445659
申请日:1982-11-30
摘要: Disclosed is a process for purification of p-hydroxymethylbenzoic acid containing 4-carboxybenzaldehyde, p-toluic acid and terephthalic acid impurities.
摘要翻译: 公开了一种纯化含有4-羧基苯甲醛,对甲苯甲酸和对苯二甲酸杂质的对羟甲基苯甲酸的方法。
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公开(公告)号:US3948982A
公开(公告)日:1976-04-06
申请号:US395719
申请日:1973-09-10
IPC分类号: C07C51/42
CPC分类号: C07C51/42
摘要: Isolation of polyhalobenzenepolycarboxylic acids from a sulfuric acid medium by diluting said sulfuric acid medium with liquid sulfur dioxide and partitioning said polyhalobenzenepolycarboxylic acids from said sulfuric acid medium.
摘要翻译: 通过用液体二氧化硫稀释所述硫酸介质并从所述硫酸介质中分配所述多卤代多羧酸,从硫酸介质中分离多卤代多羧酸。
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公开(公告)号:US3956373A
公开(公告)日:1976-05-11
申请号:US389960
申请日:1973-08-20
申请人: James O. Knobloch
发明人: James O. Knobloch
CPC分类号: C01B17/905
摘要: Process of reducing the bromine content of spent sulfuric acid bromination liquor containing organic impurities by blowing an oxygen containing gas through said sulfuric acid liquor at an elevated temperature at least until substantially all of the organic material in said liquor is oxidized.
摘要翻译: 通过在升高的温度下吹入含氧气体通过所述硫酸液体至少直至所述液体中的所有有机材料基本上被氧化来降低含有有机杂质的废硫酸溴化液的溴含量的方法。
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公开(公告)号:US4022817A
公开(公告)日:1977-05-10
申请号:US613472
申请日:1975-09-15
申请人: James O. Knobloch , Fausto Ramirez
发明人: James O. Knobloch , Fausto Ramirez
摘要: Diacylium complexes of tetrahaloterephthalic acid can be produced by reacting tetrahaloterephthalic acid with sulfur trioxide to form compounds capable of reacting with various nucleophilics.
摘要翻译: 四卤对苯二甲酸的二酰基络合物可以通过使四卤代对苯二甲酸与三氧化硫反应形成能够与各种亲核试剂反应的化合物来制备。
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公开(公告)号:US3953481A
公开(公告)日:1976-04-27
申请号:US477668
申请日:1974-06-10
申请人: James O. Knobloch , Fausto Ramirez
发明人: James O. Knobloch , Fausto Ramirez
IPC分类号: C07C51/60 , C07C63/68 , C07C161/00
摘要: Diacylium complexes of tetrahaloterephthalic acid can be produced by reacting tetrahaloterephthalic acid with sulfur trioxide to form compounds capable of reacting with various nucleophilics.
摘要翻译: 四卤对苯二甲酸的二酰基络合物可以通过使四卤代对苯二甲酸与三氧化硫反应形成能够与各种亲核试剂反应的化合物来制备。
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