CAS: 2494-89-5; 2-((4-Aminophenyl)Sulfonyl)Ethyl Hydrogen Sulfate

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CAS号27375-52-6 N-(4-((2-羟乙基)磺酰... | CAS号42986-22-1 磺化对位酯 | CAS号82572-37-0 4-amino-5-hydro...

对硝基氯苯置于sodium Tungstate,硫酸,氢气,双氧水,Sodium Hydroxide体系中,用 甲醇,N,N-二甲基甲酰胺 用作溶剂,20.0~160.0 °C,2.0 Mpa 条件下,反应 17.0H,反应生成4-硫酸乙酯砜基苯胺
参考文献:氨基苯基-β-羟乙基砜和对氨基苯基-β-羟乙基砜磺酸酯的制备方法
标题:氨基苯基-β-羟乙基砜和对氨基苯基-β-羟乙基砜磺酸酯的制备方法
摘要:本发明涉及对氨基苯基‑β‑羟乙基砜和对氨基苯基‑β‑羟乙基砜硫酸酯的制备方法,均包括:以对硝基苯基‑β‑羟乙基砜和氢气为原料,以改性骨架镍为加氢催化剂,在溶剂中进行催化加氢反应,得到还原液,分离除去所述还原液中的改性骨架镍和溶剂,得到对氨基苯基‑β‑羟乙基砜;改性骨架镍以镍为骨架,包括:Ni 75~95质量份,Al 3~15质量份,金属助剂2~10质量份;金属助剂包括mo,Cu和cr中的任意一种或至少两种的组合.本发明收率可达94%以上;且对氨基苯基‑β‑羟乙基砜硫酸酯的制备是一种连续化的生产工艺,工艺简化,生产效能高,质量稳定,生产成本较低,具有显著的经济效益和社会效益.

专利信息

专利号:US-5508389-A
优先权日:1990-09-27
标题 :Process for producing concentrated aqueous solutions of anionic azo dyes
发明人：MISCHKE PETER; HOHMANN KURT; SCHWAB ECKHARD; SITTIG MANFRED
权利人:HOECHST AG
摘要:PCT No. PCT/EP91/01830 Sec. 371 Date Mar. 26, 1993 Sec. 102(e) Date Mar. 26, 1993 PCT Filed Sep. 25, 1991 PCT Pub. No. WO92/06140 PCT Pub. Date Apr. 16, 1992.If highly concentrated aqueous solutions of azo dyes are prepared directly by diazotization and coupling reactions, appreciable difficulties generally result as a consequence of the fact that the diazotization and coupling reactions give rise to viscous phases which lead to stirring problems in the reaction apparatus used, which in turn results in an incomplete synthesis. The novel process for preparing concentrated aqueous dye solutions of an anionic dye in an aqueous medium overcomes this disadvantage by carrying out the diazotization of the aromatic amine diazo component and/or the coupling reaction between the diazonium salt and the coupling component in the presence of an auxiliary which exerts a viscosity-reducing effect on pasty phases. Examples of such auxiliaries are optionally alkyl-substituted naphthalenesulfonic acid-formaldehyde condensation products, ligninsulfonates, polyacrylates and copolymers of maleic anhydride and methacrylic acid or acrylic acid.

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:US-6222067-B1
优先权日:1999-11-04
标 题:Alkylated diaminobenzene sulfonic acids
发明人：CHEN KEH-LOONG; YIN TA-CHUNG
权利人:EVERLIGHT USA INC
摘要:A compound of the following formula (I):wherein R1 is hydrogen or C1-7 acyl, R2 is C1-3 alkylene, n is 0 or 1. Novel dyestuff intermediates of formula (I) compound of the present invention can be used to synthesis many kinds of dyestuffs. Also disclosed is a process for the preparation of compound of formula (I).

专利号:US-9896583-B2
优先权日:2012-07-13
标 题:High structure carbon blacks
发明人：DIKAN ANDREW P; ROUANET STEPHANE F; CLARKE HEATHER E; MACKAY BRUCE E; PIERRE DANNY
权利人:CABOT CORP
摘要:Disclosed herein are high structured carbon blacks, methods of synthesis and treatment, and dispersions and inkjet ink formulations prepared therefrom. The carbon black can have the following properties: OAN≧170 mL/100 g; and STSA ranging from 160 to 220 m 2 /g. The carbon black can also have the following properties: OAN≧170 mL/100 g; and a ratio of STSA/BET surface area ranging from 0.7 to 1.