Aerosol powder with improved skin adhesion
AssigneeTaisho Pharmaceutical Co., Ltd.
InventorsTsuyoshi Uchiyama, Megumi Suzuki, Ariko Imaoji
Life of this patent
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Abstract
Powdery aerosol preparations, which are characterized in that 50 to 90% by weight of a propellant having a vapor pressure at 20° C. of 4.5 kg/cm2 or less, 5 to 30% by weight of an aliphatic hydrocarbon having a boiling point of 5 to 40° C., 0.5 to 20% by weight of a powdery component and 1 to 20% by weight of a lower alcohol are packed in a container provided with a straight nozzle button having an orifice of 0.7 to 2.0 mm, show improved adhesion of the powders and the active ingredients to the skin and give an excellent feel in using, are provided.
Claims2
A powdery aerosol preparation for adhering to the skin by topical application comprising:
- (a) 50 to 90% by weight of a propellant, having a vapor pressure at 20° C. of 4.5 kg/cm2 or less, selected from the group consisting of propane, n-butane, isobutane, dimethyl ether and mixtures thereof,
- (b) 5 to 30% by weight of an aliphatic hydrocarbon selected from the group consisting of n-pentane, isopentane, neopentane and mixtures thereof, and
- (c) 0.5 to 20% by weight of a powdery cosmetic or pharmaceutical component suitable for topical application to the skin, said preparation being packed in a container provided with a straight nozzle having an orifice of 0.7 to 2.0 mm.
Dependencies are inferred from the claim text.