CAS: 104-23-4; 4-((4-Aminophenyl)Diazenyl)Benzenesulfonic Acid

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CAS号3457-98-5 4-氨基偶氮苯,盐酸盐 | CAS号23792-61-2 4-(4-nitro-phen... | CAS号305-80-6 重氮苯磺酸 | CAS号68-34-8 对甲苯磺酰苯胺 | CAS号7664-93-9 硫酸 | CAS号60-09-3 4-阿基苯甲酯 | CAS号547-58-0 甲基橙 | CAS号64-17-5 乙醇 | CAS号861869-60-5 4-[4-(2,4,6-tri... | CAS号111915-50-5 methyl 4-[[4-(d... | CAS号502-02-3 Benzenesulfonic... | CAS号547-58-0 甲基橙 | CAS号2918-83-4 4-[(4-羟基苯基)二氮烯基]苯磺酸 | CAS号106-50-3 对苯二胺 | CAS号121-57-3 对氨基苯磺酸 | CAS号101-50-8 2-氨基-5-[(4-磺基苯基... | CAS号65036-56-8 4-[(4-diazoniop...

Alkaline Earth Salt Of/the/ Methylsulfuric Acid置于硫酸,三氧化硫体系中,化学反应生成对氨基偶氮苯基-4-磺酸
参考文献:Griess,Chemische Berichte,1882,Vol. 15,P. 2189
标题:Griess,Chemische Berichte,1882,Vol. 15,P. 2189

专利信息

专利号:WO-2024151228-A1
优先权日:2023-01-10
标题:Enzymatic dyestuff synthesis
发明人：YAKIN Ä°SMAIL
权利人:SMARTERCHEM KIMYA PROJE VE DANISMANLIK ANONIM SIRKETI
摘要:The invention relates to the enzymatic synthesis of dyestuffs developed to be used for the coloring of fibers, yarns, staples or surfaces obtained by natural or synthetic ways in areas such as textile, paper and leather.

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-4118384-A
优先权日:1976-02-21
标题 :Process for preparation of azo dyestuffs by coupling in presence of aromatic sulphonic acid-formaldehyde reaction product
发明人：MOLLS HANS-HEINZ; SCHIWY WILLY; HORNLE REINHOLD; NEBELING REINHARD
权利人:BAYER AG
摘要:Dyestuff dispersions and dyestuff solutions free from salt or at least having a low salt content are obtained in that the diazotization is carried out with addition of free dispersing agent acid to which, after the synthesis, either no basic agents are added or basic agents are added only up to a pH value of 3. The disclosed process gives dyestuff compositions of low salt content and results in readily dispersible dyestuffs when water insoluble dyestuffs are prepared and stable solutions when water soluble dyestuffs are prepared. The process is widely applicable and chemical constitution of the dyestuffs is conventional.

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.