Method for producing coating
AssigneeKao Corporation
InventorsKenta MUKAI, Takehiko TOHJO, Ikuo FUKUDA
Life of this patent
Estimating the term…
Abstract
Provided is a method for forming a coating comprising fibers having an excellent adhesivity to the skin, comprising directly electrostatically spraying on the skin. A method for producing a coating comprising fibers on the surface of skin or nail, comprising directly electrostatically spraying onto human skin or nail, composition A comprising the following components (a), (b) and (c): (a) one or more volatile substances selected from the group consisting of an alcohol and a ketone, (b) a water-insoluble polymer for fiber formation, (c) 0.2 mass % or more and 25 mass % or less of water; wherein the mass ratio of component (b) to component (c), ((b)/(c)) is of 0.4 or more and 50 or less.
Claims15
1:
- A method for producing a coating comprising fibers on the surface of skin or nail, comprising directly electrostatically spraying onto human skin or nail a composition A comprising the following components (a), (b) and (c):
- (a) 50 mass % or more and 94 mass % or less of one or more volatile substances selected from the group consisting of an alcohol and a ketone,
- (b) 5 mass % or more and 25 mass % or less of a water-insoluble polymer for fiber formation, the polymer being soluble in component (a),
- (c) 0.2 mass % or more and 25 mass % or less of water;
- wherein the mass ratio of component (b) to component (c), ((b)/(c)), is 0.4 or more and 50 or less.
2:
- The method according to claim 1, wherein the mass ratio of component (a) to component (c) in the composition A, ((a)/(c)), is 3 or more and 300 or less.
3:
- The method according to claim 1, wherein the viscosity of the composition A at 25° C. is 2 mPa·s or more and 3,000 mPa·s or less.
4:
- The method according to claim 1, which forms a coating of wetted fibers on the surface of human skin or nail.
5:
- The method according to claim 1, wherein the electrostatic spraying is performed by an electrostatically spraying device holdable by a human hand or an electrostatically spraying device comprising an operation unit comprising a spraying nozzle holdable by a human hand.
6:
- The method according to claim 1, wherein component (a) in the composition A is a volatile substance comprising ethanol.
7:
- The method according to claim 1, wherein the content of component (a) is 50 mass % or more and 94 mass % or less, the content of component (b) is 0.5 mass % or more and 25 mass % or less, and the content of component (c) is 0.3 mass % or more and 18 mass % or less in the composition A, and the viscosity of the composition A at 25° C. is 15 mPa·s or more and 1,000 mPa·s or less.
8:
- The method according to claim 5, wherein the electrostatic spraying device comprises a refillable cartridge filled with the composition A.
9-15. (canceled)
16:
- The method according to claim 1, wherein component (b) in the composition A is selected from the group consisting of a polyvinyl butyral resin, a fully saponified or partially saponified polyvinyl alcohol, a polyurethane resin, an oxazoline-modified silicone, a water-soluble polyester and Zein.
17:
- The method according to claim 1, wherein component (a) in the composition A is a volatile substance comprising ethanol, and component (b) is a polyvinyl butyral resin.
18:
- The method according to claim 6, wherein the electrostatic spraying device comprises a refillable cartridge filled with the composition A.
19:
- The method according to claim 7, wherein the electrostatic spraying device comprises a refillable cartridge filled with the composition A.
20:
- The method according to claim 16, wherein the electrostatic spraying device comprises a refillable cartridge filled with the composition A.
21:
- The method according to claim 17, wherein the electrostatic spraying device comprises a refillable cartridge filled with the composition A.