Process for preserving the dyeing capacity of 5, 6-dihydroxyindole and of its and derivatives in an aqueous medium, composition and dyeing process
    5.
    发明授权
    Process for preserving the dyeing capacity of 5, 6-dihydroxyindole and of its and derivatives in an aqueous medium, composition and dyeing process 失效
    维持5,6,6-二羟基吲哚及其衍生物在水性介质,组成和染色过程中的染色能力的方法

    公开(公告)号:US06258131B1

    公开(公告)日:2001-07-10

    申请号:US08947383

    申请日:1997-10-08

    IPC分类号: A61K713

    CPC分类号: A61Q5/10 A61K8/492 D06P3/08

    摘要: Process for preserving the dyeing capacity of 5,6-dihydroxyindole or of of its derivatives corresponding to the formula (I); in which R1, R2, R3 and R4, which are identical or different donates hydrogen or a C1-C4 lower alkyl, R1, R2 and R3 denoting hydrogen when R4 denotes alkyl in an aqueous medium, characterized in that the pH of the aqueous medium is adjusted to a value pHC of between 5 and 10 by employing a pH-regulating agent containing two components (A) and (B), the component (A) being chosen from pH-regulating agents which have a dissociation constant KCA in aqueous solution at 25° C., such as pkCA, that is: 0

    摘要翻译: 保护对应于式(I)的5,6-二羟基吲哚或其衍生物的染色能力的方法;其中相同或不同的R 1,R 2,R 3和R 4可以提供氢或C 1 -C 4低级烷基, R1,R2和R3表示氢,当R4表示水性介质中的烷基时,其特征在于通过使用含有两种组分(A)和(A)的pH调节剂将含水介质的pH值调节至5至10的pH值 (B)中,组分(A)选自在25℃的水溶液中具有解离常数KCA的pH调节剂,例如pkCA,即组分(B)选自pH调节 在25℃的水溶液中具有解离常数KCB的试剂,例如pkCB,即:

    Method of preparing a cosmetic composition, and an apparatus and a refill for preparing such a composition
    8.
    发明申请
    Method of preparing a cosmetic composition, and an apparatus and a refill for preparing such a composition 审中-公开
    制备化妆品组合物的方法,以及用于制备这种组合物的装置和再填充物

    公开(公告)号:US20070187325A1

    公开(公告)日:2007-08-16

    申请号:US11698198

    申请日:2007-01-26

    IPC分类号: B01D11/04

    CPC分类号: B01D11/0219

    摘要: A method of preparing a cosmetic composition includes inserting a refill having an enclosure containing a plurality of substances into an extractor apparatus and subjecting the plurality of substances to fluid injection conditions and/or to external action. The extractor apparatus is able to inject at least one fluid into the enclosure. The method allows at least one of the substances to be extracted in differentiated manner.

    摘要翻译: 制备化妆品组合物的方法包括将具有包含多种物质的外壳的填充物插入提取器装置中,并使多种物质经受流体注射条件和/或外部作用。 提取装置能够将至少一种流体注入外壳。 该方法允许以差异的方式提取至少一种物质。