CAS: 117-61-3; 4,4'-Diamino-[1,1'-Biphenyl]-2,2'-Disulfonic Acid

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CAS号64989-23-7 Azoxybenzene-3,... | CAS号61014-66-2 3-hydroxyamino-... | CAS号98-47-5 3-硝基苯磺酸 | CAS号4386-32-7 3,3'-hydrazo-bi... | CAS号7732-18-5 水 | CAS号7647-01-0 盐酸 | CAS号7782-99-2 亚硫酸 | CAS号92-87-5 联苯胺 | CAS号5896-30-0 3,7-Diaminodibe...

3-硝基苯磺酸水合物置于锌体系中,化学反应生成联苯胺双磺酸
参考文献:Fierz-David,H. E.; Blangey,L.,Grundlegende Operationen Der Farbenchemie,5. Aufl.,S. 118
标题:Fierz-David,H. E.; Blangey,L.,Grundlegende Operationen Der Farbenchemie,5. Aufl.,S. 118

专利信息

专利号:US-2024408567-A1
优先权日:2023-06-09
标 题:Synthesis of porous carbon-based materials from expanded polystyrene
发明人：SAHA DIPENDU; GRAPPE HIPPOLYTE A
权利人:Eco Carbon LLC
摘要:A process for synthesizing a carbon molecular sieve and an activated carbon from expanded polystyrene is provided. The process includes sulfonating the expanded polystyrene with sulfuric acid in the presence of a solvent, for example, chloroform, to obtain sulfonated polystyrene; carbonizing the sulfonated polystyrene to obtain a carbon molecular sieve (CMS) with a substantially high degree of porosity; and activating the CMS by adding an activating agent to the CMS to obtain an activated carbon with a substantially high degree of porosity. The activating agent is selected from one or more of steam, potassium hydroxide, carbon dioxide, zinc chloride, phosphoric acid, sodium carbonate, aluminum chloride, magnesium chloride, and sodium hydroxide. A low temperature of, for example, about 50 degrees Celsius, is employed for sulfonating the expanded polystyrene. Heating and cooling operations in the steps of synthesizing and activating the CMS are performed under a nitrogen gas atmosphere.

专利号:US-2024408568-A1
优先权日:2023-06-09
标 题:Synthesis of porous carbon-based materials from Expanded Polystyrene (EPS) or Styrofoam
发明人：SAHA DIPENDU; GRAPPE HIPPOLYTE A
权利人:Eco Carbon LLC
摘要:A process for synthesizing a carbon molecular sieve and an activated carbon from expanded polystyrene is provided. The process includes sulfonating the expanded polystyrene with sulfuric acid in the presence of chlorobenzene, to obtain sulfonated polystyrene; carbonizing the sulfonated polystyrene to obtain a carbon molecular sieve (CMS) with a substantially high degree of porosity, and activating the CMS by an activating agent to obtain activated carbon. A low temperature of, for example, about 50 degrees Celsius, is employed for sulfonating the expanded polystyrene. Heating and cooling operations in the steps of synthesizing the CMS are performed under a nitrogen gas atmosphere.

专利号:US-5366546-A
优先权日:1991-11-23
标 题 :Production of pigment compositions
发明人：MCCRAE JAMES M; KEIRS ANNE M; NIMMO JOHN A
权利人:CIBA GEIGY CORP
摘要:A process for the production of a pigment composition, comprising combining a) a dispersion of one or more non-polar components of a surface coating vehicle, or a non-polar additive for the pigment composition in an aqueous solution of a salt of a polar pigment additive, with b) an aqueous slurry of a pigment or a precursor thereof, before, during or after the synthesis of the pigment; and then isolating the pigment composition so obtained.

专利号:US-5190585-A
优先权日:1988-10-06
标 题 :Production of pigment compositions
发明人：MCCRAE JAMES M; FORSYTHE NEIL C W
权利人:CIBA GEIGY CORP
摘要:The present invention provides processes for the production of a pigment composition comprising: Ia) contacting a pigment, before or during its synthesis, with a water-immiscible carrier medium, and then completing the pigment synthesis to produce a pigment composition comprising the pigment and the water-immiscible carrier medium, and Ib) contacting the resulting aqueous fully-synthesized pigment composition with an aliphatic organic acid and optionally a water-immiscible carrier medium; adjusting the pH value of the mixture so obtained to below 7.0; and then adjusting to the pH value of the mixture to a value above 7.0 thereby transferring the organic acid into the aqueous phase; and isolating a pigment composition comprising the pigment and the water-immiscible carrier medium, or II) contacting an aqueous fully-synthesized pigment slurry with an aliphatic organic acid and a water-immiscible carrier medium according to above step Ib).

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.