CAS: 81-11-8; 4,4-Diamino-2,2-Stilbenedisulfonic Acid

上下游产品

CAS号1211962-72-9 4,4'-dinitrosti... | CAS号121-03-9 对硝基甲苯邻磺酸 | CAS号119-72-2 4-硝基-4’-氨基二苯-2,... | CAS号7803-57-8 水合肼 | CAS号111-46-6 二乙二醇 | CAS号6404-60-0 4,4'-dinitrobib... | CAS号7647-01-0 盐酸 | CAS号16473-79-3 3,3'-Azobis[6-[... | CAS号7732-18-5 水 | CAS号26092-49-9 4,4'-二肼二苯乙烯-2,2'-二磺酸 | CAS号58727-02-9 5-[(4-aminophen... | CAS号5136-34-5 5-amino-2-[2-(4...

2-甲基苯磺酸置于氢气,硝酸,氯,Sodium Hydroxide体系中,用 水 作为反应溶剂,-5.0~80.0 °C,500.01 Kpa 条件下,反应 8.25H,反应生成 4,4'-二氨基二苯乙烯-2,2'-二磺酸
参考文献:一种dsd酸的制备方法
标题:一种dsd酸的制备方法
摘要:本发明涉及化工合成领域,具体讲,涉及一种dsd酸的制备方法.本发明dsd酸的制备方法为:甲苯经磺化精制分离得到ots,副产物为pts;ots经混酸硝化得pnts;pnts氯气氧化缩合得dns;dns催化加氢还原得到高品质的目标物dsd酸,可直接用于荧光增白剂的合成.本发明的合成方法,大大降低了工艺的危险性,同时大幅度减少了有害副产物以及废物的产生,尤其是不再产生大量的致癌中间体邻硝基甲苯,彻底解决了老工艺硝化安全性问题,并且具有步骤简单,收率高等优点.

专利信息

专利号:US-8034895-B2
优先权日:2004-02-04
标题 :Conjugated thiophenes having conducting properties and synthesis of same
发明人：SKENE WILLIAM G
权利人:UNIV MONTREAL
摘要:The present invention relates to conjugated oligomers and polymers comprising aromatic thiophene cores. The conjugated materials are obtained by simple and efficient condensation of an aryl diamine and an aryl dialdehyde or a bifunctional aryl moiety comprising both an aldehyde and an amine. Condensation of the complementary moieties at temperatures ranging from ambient to refluxing temperatures in various solvents resulted in conjugated oligomers and polymers that can subsequently be cast into thin films. Oligomerization and polymerization can be done under mild conditions with removal of the resulting water bi-product responsible for shifting the equilibrium in favor of the conjugated products. The resulting conjugated compounds can be made conducting with dopants affording electrically conducting materials of either p-type or n-type conductors depending on the dopant selected.

专利号:US-4466900-A
优先权日:1981-09-22
标 题:Process for the preparation of fluorescent brightener formulations which are stable on storage
发明人：HORLACHER PAUL; PFENNINGER HEINZ
权利人:CIBA GEIGY CORP
摘要:A process is described for the preparation of concentrated liquid formulations, stable on storage, of anionic fluorescent brighteners, which process consists in passing a crude (for example obtained from synthesis) aqueous solution or dispersion of a fluorescent brightener containing sulfo groups, in particular a stilbene fluorescent brightener belonging to the group comprising bistriazinylaminostilbenedisulfonic acids, bis-styrylbiphenyls, bis-styrylbenzenes and bis-triazolylstilbenedisulfonic acids, is passed through a semipermeable membrane which contains ionic groups and has a pore diameter of 1-500 ANGSTROM in order to remove salts and by-products from the synthesis having molecular weights below 500 and in order to remove part of the water. The resulting concentrated preparation can, if desired, be concentrated further and/or treated with formulation assistants and, if desired, further additives.

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-4381301-A
优先权日:1980-05-07
标题 :Substituted tricyclic thieno compounds, their synthesis, their use, their compositions and their medicaments
发明人：RAINER GEORG
权利人:BYK GULDEN LOMBERG CHEM FAB
摘要:Substituted thienobenzodiazepinones of the general formula I (I) [wherein R1 denotes a hydrogen atom (-H) or an alkyl radical with 1 to 4 carbon atoms; R2 represents a halogen atom (halo) or has one of the meanings of R1; R3 denotes a halogen atom (halo) or the group -N(R4)R5; R4 denotes an alkyl radical with 1 to 4 carbon atoms or an alkenyl radical with 3 to 5 carbon atoms; R5 has one of the meanings of R4 or represents the group -(CH2)m-N(R6)R7; or R4 and R5, together with the nitrogen atom to which both are bonded, denote a morpholino group, a pyrrolidino group, a piperidino group, a hexahydroazepin-1-yl group, a piperazin-1-yl group (which is optionally substituted in the 4-position by a methyl, ethyl or benzyl group), a 2,4-dimethylpiperazin-1-yl group, or a hexahydro-1H-1,4-diazepin-1-yl group (which is substituted in the 4-position by a methyl or ethyl group); R6 denotes an alkyl group with 1 to 4 carbon atoms; R7 denotes an alkyl group with 1 to 4 carbon atoms; A denotes a straight-chain or branched alkylene group with 1 to 5 carbon atoms; and m denotes 2 or 3] and their acid-addition salts are new compounds. They either have a protective action on the stomach and intestine and are suitable for treating illnesses based on disorders of the stomach or intestine, or they are intermediates for preparing products having protective action. Processes for the preparation of the new pharmacologically-active compounds and of the intermediate products are presented.

专利号:US-2007287842-A1
优先权日:2004-02-04
标题 :Conjugated Thiophenes Having Conducting Properties and Synthesis of Same

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.