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    • 1. 发明授权
    • Couplers for use in oxidative hair dyeing
    • 用于氧化染发剂的成色剂
    • US06750337B2
    • 2004-06-15
    • US10052362
    • 2002-01-18
    • Mu-Ill LimYuh-Guo PanGottfried Wenke
    • Mu-Ill LimYuh-Guo PanGottfried Wenke
    • C07D27910
    • C07C217/84A61K8/415A61K8/416A61K8/49A61K8/4906A61K8/4913A61K8/4926A61K8/494A61Q5/10C07C2601/14
    • Couplers for hair coloring compositions for oxidative dyeing of hair are compounds of the formula (1): wherein X is selected from halogen and R5SO4 where the halogen is preferably Cl, Br or I; R, R1 and R2 are each individually selected from C1 to C22 alkyl and C1 to C22 mono or dihydroxyalkyl, or two of R, R1 and R2 together with the nitrogen atom to which they are attached form a C3 to C6 saturated or unsaturated ring optionally containing in the ring one or more additional hetero atoms selected from O, S and N atoms; R3 and R 4 are each individually selected from C1 to C6 alkyl, C1 to C6 hydroxyalkyl, C1 to C6 alkoxy, C1 to C6 aminoalkyl or R3 and R4 together form a C1 to C5 alkylene group; and R5 is selected from C1 to C22 alkyl and C1 to C22 mono or dihydroxyalkyl.
    • 用于头发氧化染色的染发组合物的成色剂是式(1)的化合物:其中X选自卤素和R 5 SO 4,其中卤素优选为Cl,Br或I; R 1,R 2和R 2各自独立地选自C 1至C 22烷基和C 1至C 22单或二羟基烷基,或者R 1,R 2和R 2中的两个与它们的氮原子一起 连接形成任选地在环中含有一个或多个选自O,S和N原子的另外的杂原子的C 3至C 6饱和或不饱和环; R 3和R 4各自独立地选自C 1至C 6烷基,C 1至C 6羟基烷基,C 1至C 6烷氧基,C 1至C 6氨基烷基或R 3和R 4一起形成C 1至C 5亚烷基 组; 并且R 5选自C 1至C 22烷基和C 1至C 22单或二羟基烷基。
    • 4. 发明授权
    • Process for the manufacture of a hair dye product containing
5,6-dihydroxyindole
    • 用于制造含有5,6-二羟基吲哚的染发剂的方法
    • US5704949A
    • 1998-01-06
    • US603953
    • 1996-02-16
    • Giuseppe ProtaGottfried WenkeLeszek Wolfram
    • Giuseppe ProtaGottfried WenkeLeszek Wolfram
    • A61K8/49A61Q5/10A61K7/13
    • A61Q5/10A61K8/492
    • The present invention is directed to the preparation of an aqueous hair dyeing composition containing an effective hair dyeing amount--at least 2 mg/ml--5,6-dihydroxyindole (DHI). An aqueous hair dyeing composition is produced by reacting under essentially anaerobic conditions dopa or a salt thereof with an alkali metal ferricyanide oxidant in an aqueous reaction medium to obtain dopachrome, and permitting the dopachrome to undergo rearrangement in the aqueous medium to form 5,6-dihydroxyindole, said rearrangement being conducted in the substantial absence of oxidant, the aqueous medium being buffered by sufficient buffering agent to maintain a pH of from about 4.5 to about 9 for the reaction medium throughout the series of reactions that take place thereafter, removing the ferrocyanide species present in the aqueous system, and lastly, charging the composition into a suitable container.
    • 本发明涉及含有有效染发剂量至少2mg / ml-5,6-二羟基吲哚(DHI)的含水染发组合物的制备。 通过在基本上厌氧条件下使多巴或其盐与碱金属铁氰化物氧化剂在水性反应介质中反应来制备水性染发组合物,以获得多巴色素,并允许多巴色素在水性介质中重排以形成5,6- 所述重排在实质上不存在氧化剂的情况下进行,所述水性介质通过足够的缓冲剂缓冲,以在其后发生的一系列反应中为反应介质保持pH为约4.5至约9,除去亚铁氰化物 存在于水体系中的物质,最后,将组合物装入合适的容器中。
    • 9. 发明授权
    • Method of producing DAI from DOPA, using one reaction vessel
    • 使用一个反应容器从DOPA生产DAI的方法
    • US5486619A
    • 1996-01-23
    • US235763
    • 1994-04-29
    • Gottfried WenkeYuh-Guo PanMu-Ill LimLinas Stasaitis
    • Gottfried WenkeYuh-Guo PanMu-Ill LimLinas Stasaitis
    • C07D209/08
    • C07D209/08
    • A method of producing and isolating 5,6-diacetoxyindole (DAI) in a single reaction vessel comprising the following steps:(a) preparing a first solution comprising dopa, water and a solubilizing agent selected from the group consisting of an acid having a pk.sub.a value equal to or less than 4 and a first base having a pk.sub.b value equal to or greater than 10;(b) preparing a second solution comprising an oxidant, a buffer and water;(c) mixing the first and second solutions to form a combined solution which is rendered oxygen-free and has a pH of from about 6 to about 9;(d) stirring the combined solution in an inert atmosphere until 5,6-dihydroxyindole (DHI) is substantially completely formed;(e) adding a derivatizing agent and a second base to the combined solution to form a final solution;(f) stirring the final solution until the DHI is substantially fully consumed;(g) cooling the final solution to precipitate DAI;(h) isolating the precipitated DAI.
    • 一种在单个反应容器中生产和分离5,6-二乙酰氧基吲哚(DAI)的方法,包括以下步骤:(a)制备包含多巴,水和增溶剂的第一溶液,所述第一溶液选自具有pka 值等于或小于4,以及pkb值等于或大于10的第一碱基; (b)制备包含氧化剂,缓冲剂和水的第二溶液; (c)混合第一和第二溶液以形成无氧的并具有约6至约9的pH的组合溶液; (d)在惰性气氛中搅拌合并的溶液直到5,6-二羟基吲哚(DHI)基本上完全形成; (e)向组合溶液中加入衍生剂和第二碱以形成最终溶液; (f)搅拌最终溶液直到DHI基本上完全消耗; (g)冷却最终溶液以沉淀DAI; (h)分离析出的DAI。