Oil-in-water emulsion cosmetic

Patent metadata

Field	Value
Publication number	US-11712406-B2
Application number	US-202117543282-A
Country	US
Kind code	B2
Filing date	Dec 6, 2021
Priority date	Jul 9, 2015
Publication date	Aug 1, 2023
Grant date	Aug 1, 2023

Abstract

An oil-in-water type emulsified cosmetic and a method of making can be prepared in a system not containing a silicone and is surprisingly produced without a wet-type dispersion apparatus by using a specific combination of the oil component constituting the oily phase and a hydrophobizing agent for a hydrophobized powder. The composition includes an aqueous phase; an oily phase dispersed in the aqueous phase; and a powder dispersed in the oily phase. The oily phase comprises a volatile hydrocarbon in oil in a combined amount of 40% by mass or more with respect to the total oil content. The powder has a surface hydrophobized by treatment with a metallic soap consisting of a higher fatty acid and a divalent metal, or by a composite treatment with a higher fatty acid and a divalent metal hydroxide.

First claim

What is claimed is:

1. An oil-in-water type emulsified cosmetic composition, comprising:
(a) an aqueous phase;
(b) 1 to 40% by mass of an oily phase dispersed in the aqueous phase; and
(c) a powder dispersed in the oily phase;
wherein the oily phase comprises a volatile hydrocarbon oil and does not contain a non-volatile hydrocarbon oil; and
wherein the powder has a surface hydrophobized by treatment with a metallic soap consisting of a higher fatty acid and a divalent metal, or by a composite treatment with a higher fatty acid and a divalent metal hydroxide.

2. The cosmetic composition according to claim 1 , further comprising:
a thickener in the aqueous phase.

3. The cosmetic composition according to claim 2 , wherein:
the thickener is one or more selected from the group consisting of succinoglycan, xanthan gum, carrageenan, gellan gum, starch, hydroxyalkylcellulose, pullulan, carbomer, (Na/Mg) silicate, bentonite, acrylamide copolymer, sodium acryloyl dimethyl taurine/hydroxyethyl acrylate copolymer, agar, polyurethane, and hydrophobic polyether polyurethane.

4. The cosmetic composition according to claim 1 , wherein:
the powder is one or more selected from the group consisting of titanium dioxide, iron oxide and zinc oxide.

5. The cosmetic composition according to claim 4 , wherein:
the powder is a pigment grade powder.

6. The cosmetic composition according to claim 1 , wherein:
the higher fatty acid is a C8 to C24 fatty acid, and the divalent metal is magnesium.

7. The cosmetic composition according to claim 6 , wherein:
the higher fatty acid is a C12 to C22 linear or branched carboxylic acid.

8. The cosmetic composition according to claim 1 , wherein:
the composition does not comprise a silicone oil.

9. The cosmetic composition according to claim 5 , wherein:
the composition further comprises a microparticle powder selected from the group consisting of titanium dioxide microparticles, iron oxide microparticles and zinc oxide microparticles.

10. An oil-in-water type emulsified cosmetic composition, comprising:
(a) an aqueous phase;
(b) 10 to 40% by mass of an oily phase dispersed in the aqueous phase; and
(c) a powder dispersed in the oily phase;
wherein the oily phase does not contain a silicone oil, does not contain a non-volatile hydrocarbon oil, and comprises a volatile hydrocarbon oil in an amount of 40% by mass or more with respect to the total oil content; and
wherein the powder has a surface hydrophobized by a treatment with a metallic soap consisting of a higher fatty acid and a divalent metal, or by a composite treatment with a higher fatty acid and a divalent metal hydroxide.

11. The cosmetic composition, according to claim 10 , wherein:
the powder comprises a pigment-grade powder selected from the group consisting of titanium dioxide, iron oxide and zinc oxide; and wherein the composition further comprises a microparticle powder selected from the group consisting of titanium dioxide microparticles, iron oxide microparticles and zinc oxide microparticles.

12. An oil-in-water type emulsified cosmetic composition, comprising:
(a) an aqueous phase;
(b) 1 to 40% by mass of an oily phase dispersed in the aqueous phase; and
(c) a powder dispersed in the oily phase;
wherein the oily phase does not contain a silicone oil, does not contain a non-volatile hydrocarbon oil, and comprises a volatile hydrocarbon oil in an amount of 40% by mass or more with respect to the total oil content;
wherein the powder has a surface hydrophobized by a treatment with a metallic soap consisting of a higher fatty acid and a divalent metal, or by a composite treatment with a higher fatty acid and a divalent metal hydroxide;
wherein the powder comprises a pigment-grade powder selected from the group consisting of titanium dioxide, iron oxide and zinc oxide; and
wherein the composition further comprises a microparticle powder selected from the group consisting of titanium dioxide microparticles, iron oxide microparticles and zinc oxide microparticles.

13. The cosmetic composition according to claim 1 , wherein:
the volatile hydrocarbon oil is selected from the group consisting of light isoparaffins, isododecane and isohexadecane.

14. The cosmetic composition according to claim 10 , wherein:
the volatile hydrocarbon oil is selected from the group consisting of light isoparaffins, isododecane and isohexadecane.

15. The cosmetic composition according to claim 12 , wherein:
the volatile hydrocarbon oil is selected from the group consisting of light isoparaffins, isododecane and isohexadecane.

Assignees

• Shiseido Co Ltd

Inventors

• Kubota Shun
• Hata Hideo
• Concina Malyn
• Lou Michelle
• Takahashi Hideki
• Shown Julie
• Ikebe Yosuke

Classifications

• A61K8/062 Primary

  Oil-in-water emulsions · CPC title

• A61K8/0241

  Containing particulates characterized by their shape and/or structure (see also A61K8/04, A61K8/11, and A61K8/14, further aspects are classified in A61K2800/40 and subcodes) · CPC title

• A61K8/29

  Titanium; Compounds thereof · CPC title

• A61K8/31

  Hydrocarbons · CPC title

• A61K8/361

  Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof · CPC title