CAS: 137-51-9; 4-Aminobenzene-1,3-Disulfonic Acid

相似化合物

137-50-8 88-21-1 13846-13-4

上下游产品

2-amino-1-benzenesulfonic acid 4-aminobenzene sulfonic acid sulfuric acid Acetanilid 4-chloro-benzene-1,3-disulfonic acid 4-bromo-benzene-1,3-disulfonic acid 2,4,6-Trinitrophenol aniline-2,4,6-trisulphonic acid

对氨基苯磺酸置于硫酸体系中,化学反应生成苯胺-2,4-二磺酸
参考文献:Buckton; Hofmann,A. W.,Justus Liebigs Annalen Der Chemie,1856,Vol. 100,P. 164
标题:Buckton; Hofmann,A. W.,Justus Liebigs Annalen Der Chemie,1856,Vol. 100,P. 164

专利信息

专利号:US-4719053-A
优先权日:1980-08-01
标题 :Beta-chloroethylsulfonylmethyl-benzoic halides as intermediates
发明人：SCHLAEFER LUDWIG; HAEHNLE REINHARD
权利人:HOECHST AG
摘要:New beta -chloroethylsuflonylmethyl-benzoic acid halides which can serve as fibre-reactive anchors for thesynthesis of novel organic, water-soluble compounds, preferably dyestuffs, having fibre-reactive and fibre-finishing properties, such as preferably dyestuff properties, and containing, as a fibre-reactive group, one or two beta -chloroethylsufonylmethylbenzoic acid amide groups. For the synthesis of these novel fibre-finishing compounds, said new beta -chloroethylsulfonylmethyl-benzoic acid halide compounds are reacted with an organic, water-soluble compound having fibre-finishing properties and continuing one or two amino groups. Also precursors of the fibre-finishing, fibre-reactive compounds, containing said beta -chloroethylsulfonylmethyl-benzxoic acid amid grouping, can be employed for their synthesis. The novel fibre-finishing compounds can be applied onto suitable fibre materials, such as especially cellulose fibre material and natural or synthetic polyamide fibre materials, and fixed on these fibre materials in a manner similar to application and fixation methods usual in the technique for fibre-reactive compounds. The fibre-finished material, such as dyed material, shows very good wet fastnesses.

专利号:US-4035350-A
优先权日:1975-01-30
标 题:Process for the preparation of water-soluble azo dyestuffs by reacting an aromatic amine and a coupling component with alkali metal nitrite or alkyl nitrite in the absence of acid
发明人：LANDLER JOSEF; WORFEL ERHARD
权利人:HOECHST AG
摘要:A new and very advantageous Process had been found for the preparation of azo dyestuffs by diazotation and coupling in which the synthesis is carried out without the hitherto usual addition of an acid, with the proviso that at least one of the diazo and coupling components contains at least one acid group. Besides the saving of reaction material and subsequently of alkali for neutralization of the reaction medium and isolation of the dyestuff, highly concentrated solutions of the dyestuff and salt-free or practically salt-free dyestuffs can be obtained, and waste-water is no longer charged with big amounts of salts.

专利号:CN-105906789-A
优先权日:2016-05-26
标题 :A high-efficiency catalyst for the synthesis of polyglycolic acid

专利号:CN-105885025-A
优先权日:2016-05-26
标题:A highly efficient catalyst for the synthesis of polylactic acid