OILY COSMETIC

• US 20170224608A1
• Filed: 07/28/2015
• Published: 08/10/2017
• Est. Priority Date: 07/28/2014
• Status: Active Grant

• Current Assignee: Shiseido Company Limited
• Original Assignee: Shiseido Company Limited
• Inventors: FUJIYAMA, Nozomi, YODA, Yukie, MIYAZAWA, Kazuyuki, IDE, Nobuyuki
• Granted Patent: US 10,639,268 B2
• Time in Patent Office: Days
• CPC Class Codes: A61K 2800/31 Anhydrous
• CPC Class Codes: A61K 8/73 Polysaccharides
• CPC Class Codes: A61K 8/86 Polyethers
• CPC Class Codes: A61K 8/90 Block copolymers A61K8/89 takes precedence
• CPC Class Codes: A61Q 1/10 for eyes, e.g. eyeliner, mascara

Abstract

The present invention provides an oil-based cosmetic that can easily be washed out with warm water and is excellent in water resistance. The oil-based cosmetic of the present invention is characterized by comprising (a) to (c):

• • (a) 1 to 25 mass % of a block-type alkylene oxide derivative represented by the below-described formula (I)
  • (b) 1 to 15 mass % of a siliconized pullulan and/or trimethylsiloxysilicic acid
  • (c) 10 mass % or less of water

R¹O—[(EO)_p(PO)_q(EO)_r]—R²  (I)

(In the above formula, EO is an oxyethylene group and PO is an oxypropylene group. The symbols p, q, and r are the average addition mole numbers, and they are p≧1, r≧1, 10≦p+r≦70, and 10≦q≦60. R¹ and R² are either identical or different and they are either a hydrogen atom or a hydrocarbon group having 1 to 3 carbon atoms.)

Claims

1. An oil-based cosmetic, comprising:

(a) 1 to 25 mass % of a block-type alkylene oxide derivative having a chemical formula (I)

R¹O—

[(EO)_p(PO)_q(EO)_r]—

R² 

 

(I)

wherein EO is an oxyethylene group and PO is an oxypropylene group;

symbols p, q, r are average addition mole numbers;

p≧

1, r≧

1, 10≦

p+r≦

70, and 10≦

q≦

60 exist;

R¹ and R² are either identical or different;

said R¹ and R² are either a hydrogen atom or a hydrocarbon group having 1 to 3 carbon atoms;

(b) 1 to 15 mass % of a siliconized pullulan and/or trimethylsiloxysilicic acid; and

(c) 10 mass % or less of water

2. The oil-based cosmetic according to claim 1, wherein:

said R¹ and R² are block-type alkylene oxide derivatives represented by said chemical formula (I), and further said R¹ and R² are hydrocarbon groups having 1 to 3 carbon atoms.

3. The oil-based cosmetic according to claim 1, wherein:

a volatile oil is contained.

4. An oil-based eyelash cosmetics comprising:

said cosmetic according to claim 1.

5. A makeup method comprising:

a step of applying said cosmetics according to claim 1 on the skin, and

a step of removing said cosmetic by rinsing or washing with warm water having temperature between about 35°

C. and 45°

C.