Spherical powder components and solid cosmetic compositions comprising thereof
View Patent ↗Disclosed is a spherical powder component comprising: (1) a large spherical powder having a particle size of from about 10 μm to about 50 μm; and (2) a small spherical powder having a particle size of from about 1 μm to about 10 μm; wherein at least one of the large spherical powder and at least one of the small spherical powder are made of the same material, and the weight ratio of the large spherical powder to the small spherical powder is from about 25:1 to about 1:25.
1. A spherical powder component comprising:
(1) a large spherical powder having a particle size of from about 15 μm to about 50 μm; and
(2) a small spherical powder having a particle size of from about 1 μm to about 10 μm;
wherein at least one of the large spherical powder and at least one of the small spherical powder are made of the same material, and the weight ratio of the large spherical powder to the small spherical powder is from about 25:1 to about 1:25, and wherein at least one of the large spherical powder and at least one of the small spherical powder are made of polymethyl methacrylate.
2. The spherical powder component of claim 1 wherein the large spherical powder and the small spherical powder are made of material selected from the group consisting of polyacrylates, silicates, sulfates, alumina, metal dioxides, carbonates, celluloses, polyalkylenes, vinyl acetates, polystyrenes, polyamides, acrylic acid ethers, polyvinyl pyrrolidones, silicones, and mixtures and complexes thereof.
3. A solid cosmetic composition comprising by weight:
(a) from about 75% to about 99% of a pigment component comprising from about 2% to about 99% of the entire cosmetic composition of the spherical powder component of claim 1 ; and
(b) from about 1% to about 25% of a binder component.
4. The solid cosmetic composition of claim 3 comprising by weight:
(a) from about 75% to about 99% of the pigment component comprising by weight of the entire composition:
(i) from about 2% to about 40% of the spherical powder component
(ii) from about 1% to about 95% of a base powder other than the large spherical powder or the small spherical powder;
(iii) from about 2% to about 25% of a titanium dioxide other than the spherical powder, and
(iv) from about 1% to about 10% of a coloring powder; and
(b) from about 1% to about 25% of the binder component comprising by weight of the entire composition:
(v) from about 1% to about 24% of silicone oil; and
(vi) from about 0.01% to about 5% of a surfactant.
5. The solid cosmetic composition of claim 3 comprising by weight:
(a) from about 75% to about 99% of the pigment component comprising by weight of the entire composition:
(i) from about 2% to about 40% of the spherical powder component;
(ii) from about 1% to about 95% of a base powder other than the large spherical powder or the small spherical powder;
(iii) from about 2% to about 25% of a titanium dioxide other than the spherical powder; and
(iv) from about 1% to about 10% of a coloring powder; and
(b) from about 1% to about 25% of the binder component comprising by weight of the entire composition:
(v) from about 1% to about 25% of a silicone oil; and
(vi) from about 0.01% to about 5% of a surfactant.
6. A solid cosmetic composition comprising by weight:
(a) from about 75% to about 99% of a pigment component comprising from about 2% to about 99% of the entire cosmetic composition of the spherical powder component of claim 2 ; and
(b) from about 1% to about 25% of a binder component.
7. A spherical powder component comprising:
(1) a large spherical powder having a particle size of from about 15 μm to about 25 μm; and
(2) a small spherical powder having a particle size of from about 1 μm to about 10 μm;
wherein at least one of the large spherical powder and at least one of the small spherical powder are made of polymethyl methacylate, and the weight ratio of the large spherical powder to the small spherical powder is from about 25:1 to about 1:25.