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US 2001/0054574 A1Published application
Coal tar extract with a reduced content of hydrocarbons and dermatological and cosmetic compositions containing the same
OwnerRoger Navarroinventor
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Abstract
The invention concerns a coal tar extract with reduced polycyclic aromatic hydrocarbon content and a method for obtaining same using two sequentially linked distillation systems. The invention also concerns cosmetic and dermatological preparations containing said resulting coal tar extract.
Claims8
Coal tar extract, characterized in that its maximum content of polycyclic aromatic hydrocarbons is about ten parts per million (ppm) and its maximum content of benzo(a)pyrene is about a few ppm.
Dependencies are inferred from the claim text.