Cosmetic deodorant products containing encapsulated co-micronized bicarbonate ingredient
AssigneeChurch & Dwight Co., Inc.
InventorsWolfgang R. Bergmann, Richard T. Murphy
Life of this patent
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Abstract
This invention provides cosmetic stick, roll-on and cream deodorant and deodorant-antiperspirant products. The cosmetic products consisting of an organic matrix having a dispersed phase of encapsulated particles of a co-micronized crystallite blend of inorganic compounds such as sodium bicarbonate and zinc oxide. The particle surfaces are coated with a polymer such as maltodextrin starch. When this type of cosmetic product is applied to underarm surfaces, a sustained deodorant activity by the encapsulated particles is obtained.
Claims32
A cosmetic deodorant product comprising an organic matrix which contains between about 0.5-20 weight percent of an encapsulated powder composition homogeneously dispersed therein, wherein the encapsulated powder composition comprises (1) discrete crystallite particles of at least one ingredient selected from alkali metal and ammonium bicarbonates, and (2) between about 10-50 weight percent of discrete crystallite particles of at least one inorganic compound ingredient having a Mohs hardness value between about 3-7, based on the powder composition weight;
- wherein the crystallites of the powder composition have an average particle size in the range between about 0.1-30 microns as obtained by mill co-micronization of the powder ingredients;
- and wherein the crystallites are in the form of polymer surface-coated particles.
A cosmetic stick product consisting of a solid organic matrix comprising the following parts by weight of ingredients:
- ______________________________________ volatile oil 10-55 liquid emollient 1-35 low melting point wax 12-30 ______________________________________
- and the solid organic matrix contains between about 0.5-20 weight percent, based on the product weight, of a polymer-encapsulated co-micronized powder composition homogeneously dispersed therein, wherein the encapsulated powder composition comprises (1) discrete crystallite particles of at least one ingredient selected from alkali metal and ammonium bicarbonates, and (2) between about 10-50 weight percent of discrete crystallite particles of at least one inorganic compound ingredient having a Mohs hardness value between about 3-7, based on the powder composition weight;
- wherein the crystallites of the powder composition have an average particle size in the range between about 0.1-30 microns as obtained by mill co-micronization of the powder ingredients;
- and wherein the crystallites are in the form of polymer surface-coated particles.
A cosmetic roll-on product consisting of a liquid organic matrix comprising the following parts by weight of ingredients:
- ______________________________________ volatile oil 55-70 liquid emollient 3-10 ______________________________________
- and the liquid organic matrix contains between about 0.5-20 weight percent, based on the product weight, of a polymer-encapsulated composition homogeneously dispersed therein, wherein the encapsulated powder composition comprises (1) discrete crystallite particles of at least one ingredient selected from alkali metal and ammonium bicarbonates, and (2) between about 10-50 weight percent of discrete crystallite particles of at least one inorganic compound ingredient having a Mohs hardness value between about 3-7, based on the powder composition weight;
- wherein the crystallites of the powder composition have an average particle size in the range between about 0.1-30 microns as obtained by mill co-micronization of the powder ingredients;
- and wherein the crystallites are in the form of polymer surface-coated particles.
Dependencies are inferred from the claim text.