Intercalation of anionic dyes on double hydroxides and hidroxissais lamellar materials for the cosmetics industry

摘要

Intercalation of anionic dyes on double hydroxides and hidroxissais lamellar materials for the cosmetics industry. The present invention relates to the use of lamellar double hydroxides (LDH) and hidroxissais lamellar (HSL), natural or synthetic, interspersed with anionic dye, such as new materials for the formulation of cosmetics.The double (or triple) lamellar hydroxides (HDL) have the general formula [M ^ + 2 ^ ~ 1 - x ~ m ^ + 3 ^ ~ x ~ (oh ~ 2 ~] [a ^ - n ^] ~ x / n.zh ~ 2 ~ or [M ^ + 2 ^ / m. ^ + 2 ~ 1 - XM ^ + 3 ^ ~ x ~ (OH) ~ 2] [a ^ n -] ~ x / n.zh ~ 2 ~, where m ^ + 2 ^ (Mg, CA, Sr, Mn, Fe, Co, Ni, Cu, Sn, Ba, or Zn.) m ^ + 3 ^ (al, Fe, Co, Mn or Ni), '' x '' find Ram is between 0.05 and 0.5 in any proportion, '' Z '' between zero and 2.The hidroxissais lamellar (HSL) have the general formula m ^ + 2 ^ (OH) ~ 2 - x ~ (^ n ^) ~ x / n.zh ~ 2 ~, where m ^ + 2 ^ is a metallic cation (Mg, Ni, Zn, CA, Co, Cu or Mn) or mixtures of up to three metals simultaneously in any proportion, 'x' is between 0.3 and 1.0 in any proportion. The 'Z' 'between zero and 2 in any proportion.In both cases, and the ^ - n ^ corresponds to any anion dye from natural and / or synthetics.The main advantages of its use in relation to individual dyes is situated in its properties such as high capacity color, dispersibility in various vehicles, zero solubidade, low or zero skin penetration, high stability tpermica, biocompatibility, possible Multifunctionality, controllable size of particle sizes and morphology, and so on.