1.
    发明专利
    未知

    公开(公告)号:DE3025992A1

    公开(公告)日:1981-01-29

    申请号:DE3025992

    申请日:1980-07-09

    Applicant: OREAL

    Abstract: The invention relates to compositions for hair dyeing which contain, as the oxidative dye-stuff, in a cosmetically acceptable medium, para-phenylenediamine and ortho-aminophenol, or their cosmetically acceptable salts, in a ratio para-phenylenediamine/ortho-aminophenol which is such that, after the addition of an equal volume of hydrogen peroxide of 20 volumes strength and application to the hair for 30 minutes, no Bandrowsky's base can be detected in the oxidizing dyeing composition. The compositions according to the invention make it possible to impart background colorations to the hair without the formation of Bandrowsky's base.

    Hair dyeing compsns. contg. p-phenylene di:amine and o-amino phenol - in amt. to avoid formation of Bandrowsky base

    公开(公告)号:FR2474490A1

    公开(公告)日:1981-07-31

    申请号:FR8001917

    申请日:1980-01-29

    Applicant: OREAL

    Abstract: The compsn. contains p-phenylenediamine (I) and o-aminophenol (II) or their cosmetically acceptable salts in a molar ratio such that after the addn. of an equal volume of 20 volume H2O2 and application to the hair for 30 mins. no Bandrowsky Base is detected in the compsn. The colourants are contained in a cosmetically acceptable medium. In one embodiment, the compsn. contains 1-2.5% (I) and the molar ratio is 2 or less. In another embodiment, less than 1% (I) is present and the molar ratio 3or less. In use, the compsn. is mixed with H2O2 or urea peroxide and applied for 10-30 mins. Alternatively, a compsn. contg. (II) is applied first, opt. followed by moderate rinsing, and then a compsn. contg. (I) and the oxidant is applied, the opt. rinsing being such that sufficient (II) remains. The combination avoids self coupling prod. of (I) or Bandrowsky base at the same time enabling the depth of shade previously conferred by this base, which can irritate the skin, by the novel coupling prod. of (I) and (II) which is 2-amino 5-(p-aminoaniliono)-N(p-aminophenyl-44-benzoquinonlimine.

    5.
    发明专利
    未知

    公开(公告)号:AT377913B

    公开(公告)日:1985-05-28

    申请号:AT342080

    申请日:1980-06-30

    Applicant: OREAL

    Abstract: The invention relates to compositions for hair dyeing which contain, as the oxidative dye-stuff, in a cosmetically acceptable medium, para-phenylenediamine and ortho-aminophenol, or their cosmetically acceptable salts, in a ratio para-phenylenediamine/ortho-aminophenol which is such that, after the addition of an equal volume of hydrogen peroxide of 20 volumes strength and application to the hair for 30 minutes, no Bandrowsky's base can be detected in the oxidizing dyeing composition. The compositions according to the invention make it possible to impart background colorations to the hair without the formation of Bandrowsky's base.

    6.
    发明专利
    未知

    公开(公告)号:ATA342080A

    公开(公告)日:1984-10-15

    申请号:AT342080

    申请日:1980-06-30

    Applicant: OREAL

    Abstract: The invention relates to compositions for hair dyeing which contain, as the oxidative dye-stuff, in a cosmetically acceptable medium, para-phenylenediamine and ortho-aminophenol, or their cosmetically acceptable salts, in a ratio para-phenylenediamine/ortho-aminophenol which is such that, after the addition of an equal volume of hydrogen peroxide of 20 volumes strength and application to the hair for 30 minutes, no Bandrowsky's base can be detected in the oxidizing dyeing composition. The compositions according to the invention make it possible to impart background colorations to the hair without the formation of Bandrowsky's base.

    7.
    发明专利
    未知

    公开(公告)号:IT1130492B

    公开(公告)日:1986-06-11

    申请号:IT6808980

    申请日:1980-07-09

    Applicant: OREAL

    Abstract: The invention relates to compositions for hair dyeing which contain, as the oxidative dye-stuff, in a cosmetically acceptable medium, para-phenylenediamine and ortho-aminophenol, or their cosmetically acceptable salts, in a ratio para-phenylenediamine/ortho-aminophenol which is such that, after the addition of an equal volume of hydrogen peroxide of 20 volumes strength and application to the hair for 30 minutes, no Bandrowsky's base can be detected in the oxidizing dyeing composition. The compositions according to the invention make it possible to impart background colorations to the hair without the formation of Bandrowsky's base.

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