HIGH INTERNAL WATER PHASE WATER-IN-OIL EMULSIFIED COSMETIC AND COSMETIC LIQUID APPLICATOR

• US 20130343801A1
• Filed: 06/19/2013
• Published: 12/26/2013
• Est. Priority Date: 06/22/2012
• Status: Active Grant

• Current Assignee: Mitsubishi Pencil Company Limited
• Original Assignee: Mitsubishi Pencil Company Limited
• Inventors: SAKUMA, Satoshi, NAKAJIMA, Nobuyuki, SUZUKI, Susumu, KOYAMA, Hiroaki, KYOGOKU, Yuusuke, SHINMURA, Yukako
• Granted Patent: US 9,339,452 B2
• Time in Patent Office: Days
• US Class Current: 401/143
• CPC Class Codes: A45D 40/26 Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball
• CPC Class Codes: A61K 2800/10 General cosmetic use
• CPC Class Codes: A61K 8/064 Water-in-oil emulsions, e.g. Water-in-silicone emulsions
• CPC Class Codes: A61K 8/891 saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• CPC Class Codes: A61K 8/894 modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
• CPC Class Codes: A61Q 19/00 Preparations for care of the skin

Abstract

A high internal water phase water-in-oil emulsified cosmetic in which, in a system formed of an oil phase including silicone elastomer, polydimethylsiloxane and polyether modified silicone and a water phase including water in an amount of 60% or greater by mass. The water phase, at least, including one nonionic surfactant having an HLB value of 14 or greater, selected from a group consisting of polyoxyalkylene alkyl ethers, polyglycerin fatty acid esters, polyoxyalkylene glycerin fatty acid esters and polyalkyleneglycol fatty acid esters, in an amount of 0.03 to 0.6% by mass, is blended with pigments including an organic pigment, in an amount of 0.05 to 8% by mass. The viscosity at the shear rate of 3.83 sec⁻¹ at 25° C. is 1 to 100 Pa·sec, as well as an applicator with an applying part having a surface roughness Ra of 3 to 300 μm to store the cosmetic.

Claims

1. A high internal water phase water-in-oil emulsified cosmetic, wherein in a system formed of an oil phase including silicone elastomer, polydimethylsiloxane and polyether modified silicone and a water phase including water in an amount of 60% or greater by mass, the water phase including a nonionic surfactant having an HLB value of 14 or greater in an amount of 0.03 to 0.6% by mass is blended with pigments including an organic pigment, in an amount of 0.05 to 8% by mass.

2. The high internal water phase water-in-oil emulsified cosmetic as described in claim 1, wherein the viscosity at the shear rate of 3.83 sec⁻

1 at 25°

C. is 1 to 100 Pa·

sec.

3. The high internal water phase water-in-oil emulsified cosmetic as described in claim 1, wherein, at least, one nonionic surfactant having an HLB value of 14 or greater is selected from a group consisting of polyoxyalkylene alkyl ethers, polyglycerin fatty acid esters, polyoxyalkylene glycerin fatty acid esters and polyalkyleneglycol fatty acid esters.

4. The high internal water phase water-in-oil emulsified cosmetic as described in claim 1, wherein the cosmetic is a blusher cosmetic.

5. A liquid applicator comprising a reservoir arranged in a barrel body, wherein, a high internal water phase water-in-oil emulsified cosmetic according to as described in claim 2 is stored in the reservoir.

6. The liquid applicator as described in claim 5, comprising a structure formed of:

an applying part fixed at the front end part of the barrel body for applying an application liquid by being put into contact with a target part;

a thrusting mechanism arranged in the rear of the barrel body;

a dispensing port for dispending the application liquid to the applying part; and

a communication passage formed to connect between the dispensing port and the reservoir, to push the application liquid from the reservoir to the dispensing port via the communication passage of the applying part by means of the thrusting mechanism and dispense the liquid from the dispensing port, wherein the applying part has a surface roughness Ra of 3 to 300 μ

m.

7. The liquid applicator as described in claim 6, wherein the applying part includes a dispensing port plane having the dispensing port and an applying plane for applying the dispensed application liquid, and the dispensing port plane and the applying plane form two approximate flat planes having different angles of inclination.

8. The liquid applicator as described in claim 7, wherein the applying plane is inclined with an angle of 0°

to 90°

with respect to the axis while the dispensing port plane is inclined with an angle of 10°

to 45°

relative to applying plane.

9. The liquid applicator as described in claim 6, wherein the applying part has a type A hardness of 60 or greater in accordance with JIS K6253-2006.