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Bentley, Australia

A zinc oxide powder is described, which, when used in a dispersion at a concentration of at least 50 wt % of zinc oxide, produces a transparent composition having a total visible transmittance through a path length of 20 microns at 550 nm of at least one of; at least 70%, at least 75%, at least 80% or at least 85%. The powder has a number average zinc oxide aggregate size of at least 0.8 microns, at least 1 micron, at least 2 microns or at least 3 microns. Use of the zinc oxide powder reduces the risk of transdermal penetration.


Patent
Antaria Ltd | Date: 2010-07-09

A broad-spectrum UV photoprotective composition is described. The composition is characterized in that the composition comprises mesoporous zinc oxide aggregates having an average aggregate size of at least 0.8 microns dispersed in a carrier and the composition is visibly transparent. Sufficient zinc oxide is included in the composition to achieve an SPF greater than 15, greater than 25, greater than 30, or greater than 50.


A method of manufacturing a zinc oxide powder including synthesizing a mesoporous zinc oxide precursor powder by adding an aqueous solution of zinc chloride to an aqueous solution of sodium carbonate while agitating to cause precipitation of a mesoporous zinc carbonate powder wherein the molar ratio of zinc chloride to sodium carbonate present when the aqueous solution of zinc chloride and the aqueous solution of sodium carbonate are reacted is at least 1:2, heat treating a mesoporous zinc precursor material to form the mesoporous zinc oxide powder at a heat treatment temperature in the range of 250-575 C. The zinc oxide powder includes mesoporous zinc oxide aggregates with a plurality of primary zinc oxide crystallites bonded together at shared interfaces.


Trademark
Antaria Ltd | Date: 2011-04-19

Inorganic chemical compounds containing zinc in powder form for use in sunscreen and sunscreen preparations, creams and lotions, anti-aging preparations, creams and lotions, make-up and make-up preparations, sun-tanning preparations and fake-tanning preparations; oil dispersants of inorganic chemical compounds containing zinc in powder form; emulsifiers of inorganic chemical compounds containing zinc in powder form for use in sunscreen and sunscreen preparations, creams and lotions, anti-aging preparations, creams and lotions, make-up and make-up preparations, sun-tanning preparations and fake-tanning preparations; aqueous dispersants of inorganic chemical compounds containing zinc in powder form; chemicals, namely inorganic powders containing zinc, oil dispersants of inorganic powders containing zinc, emulsifiers of inorganic powders containing zinc, and aqueous dispersants of inorganic powders containing zinc, all of the foregoing being used in the manufacture of pharmaceutical preparations; inorganic powders containing zinc, oil dispersants of inorganic powders containing zinc, emulsifiers of inorganic powders containing zinc, and aqueous dispersants of inorganic powders containing zinc, all for use in the manufacture of cosmetics, namely sunscreen and sunscreen preparations, creams and lotions, anti-aging preparations, creams and lotions, make-up and make-up preparations, sun-tanning preparations and fake-tanning preparations.


Trademark
Antaria Ltd | Date: 2011-05-03

Inorganic chemical compounds containing zinc in powder form for use in sunscreen and sunscreen preparations, creams and lotions, anti-aging preparations, creams and lotions, make-up and make-up preparations, sun-tanning preparations and fake-tanning preparations; oil dispersants of inorganic chemical compounds containing zinc in powder form; emulsifiers of inorganic chemical compounds containing zinc in powder form for use in sunscreen and sunscreen preparations, creams and lotions, anti-aging preparations, creams and lotions, make-up and make-up preparations, sun-tanning preparations and fake-tanning preparations; aqueous dispersants of inorganic chemical compounds containing zinc in powder form; chemicals, namely, inorganic powders containing zinc, oil dispersants of inorganic powders containing zinc, emulsifiers of inorganic powders containing zinc, and aqueous dispersants of inorganic powders containing zinc, all of the foregoing being used in the manufacture of pharmaceutical preparations; inorganic powders containing zinc, oil dispersants of inorganic powders containing zinc, emulsifiers of inorganic powders containing zinc, and aqueous dispersants of inorganic powders containing zinc, all for use in the manufacture of cosmetics, namely, sunscreen and sunscreen preparations, creams and lotions, anti-aging preparations, creams and lotions, make-up and make-up preparations, sun-tanning preparations and fake-tanning preparations.

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