JP2001064153A - Cosmetic incorporated with superfine fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a cosmetic capable of solving the problems involved in the conventional cosmetic for, e.g. reproduction of the naturally glossy complexion with the velvety feel of a material, e.g. that is seen in infant faces, which is one of the permanent dreams for women, the problems including the gloss becoming two-dimensional, oily-faced one lacking feeling of depth with the lapse of time, or nail enamel coming off at the edge, because the living environments around women have changed to rapidly increase works with finger tips for them (e.g. resulting from expanded use of information equipment), with the result that decorated finger tips become not presentable. SOLUTION: This cosmetic is incorporated with very short pieces (50 μm or less) of superfine synthetic fibers (0.05 deniers or so) dimensionally much different from those normally used (0.5 deniers or more and 0.3 mm long or more), to produce a velvety, three-dimensional gloss on the skin by the nappy fiber terminals randomly reflecting light, and has coating film strength, when used for nail enamel, increasing by the film characteristics in which film-forming high-molecular-weight compounds are microscopically bound to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001] The present invention relates to a method for imparting natural luster to the skin or the strength of a coated film by blending a fiber powder obtained by cutting ultra-fine synthetic fibers into a cosmetic material into a cosmetic. Regarding improvement.

2. Description of the Related Art (1) In the case of imparting gloss to the skin, conventionally, the mixing ratio or combination of raw materials (such as flaky powders, oil vesicles, and resins) rich in gloss is conventionally used. Although controlled, the gloss created by these ingredients was of a two-dimensional, flat, level without depth. (2) In the case of enhancing the strength of the coating film, conventionally, a plasticizer was added to the film-forming polymer to adjust the strength of the coating film. However, a hard coating film becomes brittle when it becomes harder. Appeared, and the quality was never satisfactory. (3) In the case of ordinary ultrafine fibers, the diameter is as large as 10 to 15 μm, and the cosmetic has only a special use as a fiber. On the skin, the fibers are too thick, so they will not roll and fit, or they will feel grainy and streak. On the surface of the coating, irregularities and lines will appear and the surface will not be smooth. Had a problem.

[Problems to be Solved by the Invention] The present invention relates to a three-dimensional natural luster on the skin, which is manifested by healthy and youthful, soft and delicate hair growth of infants. Another object of the present invention is to develop a thin and durable coating film that combines film-forming polymers with each other.

[Means for Solving the Problems] The present invention relates to a method for producing ultra-fine synthetic fibers having a diameter of about 2 μm by about 5 to 50 μm.
m, and by mixing the fiber powder into cosmetics, (1) the ultra-fine fiber powder is entangled on the skin to form a thin, three-dimensional nonwoven fabric structure Optically, it causes a complex diffuse reflection phenomenon on the surface, creating a velvet-like three-dimensional, deep, natural luster. (2) Inside the dried coating, the ultra-fine fiber powder strongly bonds the film-forming polymers together, and the physical properties of the coating (hardness,
Brittleness, stickiness, adhesion, etc.).

Since the ultrafine synthetic fiber used in the present invention has a diameter of about 2 μm and a length of 50 μm or less, the appearance defects observed in conventional ultrafine fibers (about 10 to 15 μm in diameter and 0.3 mm or more in length) are known. Macro defects such as surface irregularities, streaks, warping, and entanglement of fibers, and sensory defects (roughness, stickiness, rolling, warping, etc.) do not appear.

[0006] The material of the fiber powder used in the present invention combines safety and stability with respect to ordinary acids and alkalis and various organic solvents, inhalation toxicity, chargeability, hydrophilicity and lipophilicity, and the like.
Polyester fiber, acrylic fiber, polyamide fiber, etc. are suitable.

Further, when producing these fibers, 0.01%
When 5 to 20% by weight of ultra-fine particles (titanium dioxide, zinc oxide, iron oxide, etc.) of up to 0.05 μm are contained, the ultraviolet shielding effect of the fiber is remarkably improved, and when an appropriate amount of a coloring agent is added, The fiber develops various colors, adding new value to the original function of the fiber.

DETAILED DESCRIPTION OF THE INVENTION (1) In the case of a cosmetic for the face, the youthful and ideal luster of the face is a velvet-like tone as represented by the luster of rose petals and peach skin. It is glossy. In order to express this luster on the skin, if ultra-fine fiber powder is blended into facial cosmetics (basic cosmetics, makeup cosmetics), the fiber powders are randomly arranged on the surface of the skin in a three-dimensional nonwoven fabric structure. By complexly reflecting light, the natural luster that appears in the hair of infants can be reproduced on the face of a woman. (2) In the case of a coating film-forming type cosmetic, after adding ultra-fine fiber powder to a solvent in which a film-forming polymer is dispersed and dissolved, the solvent is volatilized, and the solvent evaporates to form a coating film. At this time, the fiber powder plays a role of connecting the macromolecules to each other, and can make the physical properties of the coating film strong.

[Example-1] In the case of powdered solid white powder (pressed powder for make-up) Material name Compounding amount (% by weight) Talc 28.0 Sericite 20.0 Mica 16.0 Zinc myristate 7.0 Titanium dioxide (rutile) 5.0 * Ultra-fine polyester fiber powder 10.0 Bengal 0.90 Yellow iron oxide 2.07 Black iron oxide 0.03 Squalane 4.0 Silicon oil 5.5 Nitsukol SI-10 0.80 Flavor 0.38 Ethylparaben 0.30 Vitamin E-acetate 0.02 Total 100.00

[0010]

[Example-3] In the case of a coating film cosmetic (a nail enamel for beautiful nails) Material name Compounding material (% by weight) * Ultrafine acrylic fiber powder 3.0 n-butyl acetate 15.0 Ethyl acetate 10 2.0 n-Butanol 2.0 Nitrocellulose HIG-1 / 2 4.0 Nitrocellulose HIG-1 / 4 8.0 Toluenesulfonamide resin 15.0 Benton gel 20.0 Citroflex A-4 5.0 Consumpur 1.95 Vitamin E-acetate 0.03 Seaauretinol 0.02 Compounding mixed colorant 16.0 Total 100.00

[Effect of the Invention] The cosmetic containing the ultrafine synthetic fiber powder of the present invention has a fluffy structure in which fine fiber powder is randomly arranged on the skin surface when viewed microscopically. Depending on the viewing angle, it causes diffuse reflection of light, giving the skin a natural gloss with a velvety or velvet-like three-dimensional, deep texture, giving you a young and healthy complexion.
(sensory evaluation). On the other hand, inside the coating film formed of the film-forming polymer, the fine fiber powder plays a role of connecting the molecules more finely and microscopically between the polymers, thereby improving the physical properties of the coating film. (Sensory evaluation, physical evaluation). These effects are as large as that of the ultrafine fiber powder (diameter of about 10 μm or more and length of 0.3 mm or more) compared with that of the ultrafine fiber powder.
This is due to the physical properties that appear due to the extraordinarily fine material with a length of 50 μm or less. It is possible to eliminate at once the appearance and sensory defects that have been seen in conventional fiber powder. It has become possible.

Claims (1)

[Claims] 1. An ultrafine synthetic fiber having a diameter of about 2 μm
Cosmetics characterized by being cut to a length of 50 μm and blended in an amount of 0.5 to 25.0% by weight.