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    • 8. 发明授权
    • Process for evaluating the state of the surface of keratinous fibres and
a composition for making use of this process
    • 用于评估角质纤维表面状态的方法和使用该方法的组合物
    • US4642294A
    • 1987-02-10
    • US817604
    • 1986-01-10
    • Jean-Claude ArnaudPierre Bore
    • Jean-Claude ArnaudPierre Bore
    • A61K8/34A61Q5/00G01N31/00G01N33/48G01N33/52
    • G01N33/52Y10T436/18
    • According to this process, (a) a compound capable of entering the surface interstices of the keratinous fibres is chosen; which is capable of producing, in an aqueous medium, a solution which is colored naturally or capable of being colored by a development, and capable, under the conditions of the process, of being stable and maintained at a pH such that no ionic charge appears; (b) an aqueous immersion solution containing the compounds chosen is prepared; (c) a specimen of the fibres to be studied is immersed therein to produce an "uptake" of the compound on the fibres, which is a function of their surface state; (d) the specimen is withdrawn from the solution and the excess of solution saturating the fibres is removed; (e) the compound present on the fibres is extracted by immersing the latter in at least one aqueous bath at the same pH as that of the aqueous immersion solution to obtain an extraction solution which is colored or whose color is developed in a step (f); and (g) the state of the surface of the fibres is deduced from the quantity of the compounds present in the extraction solution.
    • 根据该方法,选择(a)能够进入角质纤维的表面间隙的化合物; 其能够在水性介质中产生自然着色或能够通过显影着色的溶液,并且能够在该方法的条件下稳定并保持在不使离子电荷出现的pH ; (b)制备含有所选化合物的含水浸渍溶液; (c)将要研究的纤维的样品浸入其中以产生纤维上的化合物的“吸收”,这是它们的表面状态的函数; (d)将样品从溶液中取出,并除去饱和纤维的过量溶液; (e)存在于纤维上的化合物通过将其浸入到与浸渍水溶液相同的pH的至少一个水浴中而提取,得到着色的或其颜色在步骤(f ); 和(g)从提取溶液中存在的化合物的量推导出纤维表面的状态。