Lyophilized dyes and the use thereof to color keratinic fibers
    2.
    发明授权
    Lyophilized dyes and the use thereof to color keratinic fibers 失效
    冻干染料及其用于染色角质纤维的用途

    公开(公告)号:US3981676A

    公开(公告)日:1976-09-21

    申请号:US372933

    申请日:1973-06-25

    Abstract: A dye for coloring hair is one of an indamine, indoaniline, indophenol, diaminobenzoquinone or mixtures thereof which is lyophilized from a solution of the dye in an organic solvent or in an aqueous solution of the organic solvent by freezing the solution at a temperature of -200.degree. to -60.degree.C, and then subliming the frozen solution under a vacuum at a temperature lower than the melting point of the frozen solution. The thus lyophilized dye can be desorped to eliminate, if necessary, residual moisture. The lyophilized dye can be solubilized in an aqueous solution to produce a hair dye composition and can be present therein in amounts of about 0.0005-4 percent by weight of said composition.

    Abstract translation: 用于着色毛发的染料是吲哚,吲哚苯胺,靛酚,二氨基苯醌或其混合物之一,其在有机溶剂或有机溶剂的水溶液中从染料的溶液中冻干, 200℃〜-60℃,然后在低于冷冻溶液的熔点的真空下升温冷冻溶液。 因此,如此冻干的染料可以解吸,以消除必要时残留的水分。 冻干的染料可以溶解在水溶液中以产生染发剂组合物,并且可以以所述组合物的约0.0005-4重量%的量存在。

    Lyophilized and spray dried dyes
    3.
    发明授权
    Lyophilized and spray dried dyes 失效
    冻干和喷雾干燥的染料

    公开(公告)号:US3960476A

    公开(公告)日:1976-06-01

    申请号:US461261

    申请日:1974-04-15

    CPC classification number: C09B67/0003 A61K8/02 A61K8/413 A61Q5/10 C09B53/02

    Abstract: A process for producing a dye in powder form involves reacting an oxidation agent with an oxidation base in an aqueous alkaline preferably ammoniacal medium having a pH ranging from 8 to 13 at a temperature and during a period of time allowing at least a partial oxidation, preferably between 15.degree.-30.degree.C for a period of about 5 minutes to 30 hours and lyophilizing or spray-drying the resulting reaction product. The resulting dye can be used to color keratinic fibers, especially human hair.

    Abstract translation: 制备粉末形式的染料的方法包括使氧化剂与氧化碱在pH在8至13的水性碱性优选氨基介质中在一段温度下和在一段时间内使得至少部分氧化,优选地 在15-30℃之间约5分钟至30小时,冻干或喷雾干燥所得反应产物。 所得染料可用于着色角质纤维,特别是人的头发。

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