CAS: 827-94-1; 2,6-Dibromo-4-Nitroaniline

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CAS号100-01-6 对硝基苯胺 | CAS号13296-94-1 2-溴-4-硝基苯胺 | CAS号96-75-3 2-氨基-5-硝基苯磺酸 | CAS号31106-74-8 1,3-dibromo-2-m... | CAS号3460-20-6 1,2,3-Tribromo-... | CAS号54381-71-4 2,6-dibromo-N-n... | CAS号147-82-0 2,4,6-三溴苯胺 | CAS号20024-98-0 1,3-dibromo-2,5... | CAS号108-36-1 1,3-二溴苯 | CAS号51686-78-3 2,4-二溴硝基苯 | CAS号29213-03-4 2,6-二溴-1,4-苯二胺 | CAS号24402-71-9 2,6-dibromo-N,N... | CAS号827-23-6 2,4-二溴-6-硝基苯胺 | CAS号6311-60-0 1,3-二溴-5-硝基苯 | CAS号585-79-5 间溴硝基苯 | CAS号56990-02-4 3,5-二溴苯甲醛 | CAS号626-40-4 3,5-二溴苯胺 | CAS号626-39-1 1,3,5-三溴苯 | CAS号15969-09-2 2,4-二溴-6-硝基苯酚

2-氨基-5-硝基苯磺酸置于溴体系中,化学反应生成 2,6-二溴-4-硝基苯胺
参考文献:合成粘土在去除 90Sr 方面表现出色
标题:合成粘土在去除 90Sr 方面表现出色
摘要:对来自汉福德场地的实际地下水进行的测试以及对 2Na {sup +}{产量}Sr{sup 2+} 交换平衡的基础研究表明,合成粘土对 {sup 90}Sr 具有极高的选择性,具有很高的吸收能力.与现有 Sr 选择性离子交换剂的比较研究清楚地表明,本合成粘土表现出从汉福德三个不同位置收集的实际地下水中去除 {sup 90}Sr 的最佳性能.这种新型 Sr 离子筛有望用于在意外释放和 {sup 90}Sr 污染后净化环境.(C) 2000 材料研究学会.
DOI:10.1557/jmr.2000.0182

专利信息

专利号:US-4257942-A
优先权日:1977-10-06
标题:New water-insoluble azo dyes
发明人：DEFEO FRANCESCO; CIPOLLI ROBERTO
权利人:ACNA
摘要:The present invention relates to the synthesis of new dyes having the following general formula: wherein: D is the residue of a diazotizable component of the carbocyclic or heterocyclic series X is an ethylene group, optionally substituted by halogen-methyl, alkyl C1-C4, aryl, aralkyl or CH2OCO(HN)nR (wherein R and n have the meanings hereinafter defined); R is alkyl C1-C8 optionally substituted by halogen, CN,COOH; aryl optionally substituted by one or more atoms of halogen, alkyl C1-C4, alkoxyl C1-C4; alkoxyl C1-C4; alkoxyl C1-C8; Aryloxy; aralkoxy; cycloalkoxy; aralkyl; naphthyl optionally substituted by halogen; alkenyl C2-C8, optionally substituted by halogen, CN, COOH; R1 and R2, either like or unlike each other, may be alkyl C1-C4 optionally substituted by halogen or CN groups; aralkyl; R3 is H; halogen, alkyl C1-C4; alkoxyl C1-C4, optionally substituted. n is 0 or 1.

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.

专利号:JP-2025500080-A
优先权日:2021-12-06
标题 :Synthesis of amphiphilic block copolymers and polymer nanofibers produced therefrom

专利号:RU-2004537-C1
优先权日:1991-03-22
标 题:Method of synthesis of aromatic amines bromo-derivatives

专利号:CN-105502351-B
优先权日:2015-12-04
标题:A kind of soluble graphene nanobelt and its synthesis method and application