-
1.发明授权Process for the preparation of derivatives of 3-(4-hydroxy-anilino)carbazole 失效制备3-（4-羟基 - 苯胺基）咔唑衍生物的方法
公开(公告)号：US4320060A
公开(公告)日：1982-03-16
申请号：US108486
申请日：1979-12-31
IPC分类号： C07D209/88 , C09B49/00 , C09B49/10
CPC分类号： C09B49/10 , C07D209/88
摘要： The process for the preparation of a 3-(4-hydroxyanilino)carbazole of the formula ##STR1## wherein R is hydrogen, alkyl having 1 to 8 carbon atoms or halogenoalkyl having 1 to 8 carbon atoms, comprising reacting a 3-aminocarbazole of the formula ##STR2## with p-hydroquinone or p-aminophenol or a mixture of p-hydroquinone and p-aminophenol in at least stoichiometric amounts by heating to a temperature of 150.degree. to 300.degree. C. with exclusion of oxygen.
摘要翻译： 制备式“IMAGE”的3-（4-羟基苯胺基）咔唑的方法，其中R是氢，具有1至8个碳原子的烷基或具有1至8个碳原子的卤代烷基，包括使3-氨基咔唑 通过加热至150-300℃的温度，除去氧气，至少具有化学计量的对氢醌或对氨基苯酚或对 - 对苯二酚和对氨基苯酚的混合物。
-
公开(公告)号：US4360459A
公开(公告)日：1982-11-23
申请号：US251172
申请日：1981-04-06
申请人： Steffen Piesch , Wolf Weidemuller
发明人： Steffen Piesch , Wolf Weidemuller
CPC分类号： C07D209/88 , C09B49/12 , D06P1/30
摘要： Carbazoleazomethines are prepared and sulfur dyestuffs are prepared by sulphurizing a carbazoleazomethine of the formula ##STR1## wherein R.sup.1 is hydrogen, hydroxyl, halogen, nitro, alkyl having 1 to 8 carbon atoms, alkoxy having 1 to 8 carbon atoms, dialkylamino having 1 to 4 carbon atoms per alkyl, alkanoyloxy having 1 to 8 carbon atoms, benzoyloxy, alkanoylamino having 1 to 8 carbon atoms or benzoylamino;R.sup.2 is hydrogen, hydroxyl, halogen, alkyl having 1 to 8 carbon atoms or alkoxy having 1 to 8 carbon atoms;R.sup.3 is hydrogen or alkyl having 1 to 7 carbon atoms;R.sup.4 is hydrogen or halogen; andR.sup.5 is hydrogen or alkyl having 1 to 8 carbon atoms.
摘要翻译： 制备咔唑甲az嗪，并通过硫化式（ⅩⅧ）的咔唑甲脒其中R 1为氢，羟基，卤素，硝基，具有1至8个碳原子的烷基，具有1至8个碳原子的烷氧基，具有1至4个碳原子的二烷基氨基 每个烷基碳原子，具有1至8个碳原子的烷酰氧基，苯甲酰氧基，具有1至8个碳原子的烷酰氨基或苯甲酰氨基; R2是氢，羟基，卤素，具有1-8个碳原子的烷基或具有1至8个碳原子的烷氧基; R3是氢或具有1至7个碳原子的烷基; R4是氢或卤素; 并且R 5是氢或具有1至8个碳原子的烷基。
-
3.发明授权Process for isolating sulphur dyestuffs from aqueous crude melts containing sodium polysulphide 失效从含有多硫化钠的含水粗熔体中分离硫化染料的方法
公开(公告)号：US4309178A
公开(公告)日：1982-01-05
申请号：US197814
申请日：1980-10-17
申请人： Georg Daniek , Artur Meyer , Wolf Weidemuller
发明人： Georg Daniek , Artur Meyer , Wolf Weidemuller
CPC分类号： C09B49/00 , C09B67/0096
摘要： In the processs for isolating solid sulphur dyestuffs from crude sulphur dyestuff melts, the improvement comprises adding 10.sup.-4 to 1% by weight, relative to the amount of dyestuff, of an organic flocculating auxiliary to the crude dyestuff melt to produce a filterable dyestuff precipitate and then separating said precipitate.
摘要翻译： 在从粗硫染料熔体中分离固体硫化染料的过程中，改进包括相对于染料量将10-4至1重量％的有机絮凝助剂加入到粗染料熔体中以产生可过滤的染料沉淀物 然后分离所述沉淀物。
-
4.发明授权Preparation of azo dyestuffs by diazotization and coupling in the presence of an ester 失效通过在酯的存在下通过重氮化和偶联制备偶氮染料
公开(公告)号：US4795807A
公开(公告)日：1989-01-03
申请号：US31530
申请日：1987-03-30
CPC分类号： C09B67/0051 , C09B41/004 , C09B67/0029
摘要： Azo disperse dyestuffs are prepared by diazotization and coupling in an aqueous phase, the coupling being carried out in the presence of an ester of a lower aliphatic carboxylic acid.
摘要翻译： 偶氮分散染料通过在水相中重氮化和偶联制备，偶联在低级脂族羧酸的酯存在下进行。
-
-
-
搜索结果
4 条记录 (耗时 0.021 秒)