High-gloss photocrosslinkable cosmetic composition

Abstract

The present invention relates to a photocrosslinkable cosmetic composition, comprising in a physiologically acceptable medium: at least one photocrosslinkable urethane (meth)acrylate compound P1 comprising at least one structural unit: (I) at least one photocrosslinkable urethane (meth)acrylate compound P2, comprising at least one polyethylene glycol chain, preferably at least one film-forming polymer P3, and at least one photoinitiator. ##STR00001##

Claims

1. A photocrosslinkable cosmetic composition, comprising in a physiologically acceptable medium: from 20% to 40% of at least one photocrosslinkable urethane dimethacrylate compound P1 according to formula (II): ##STR00012## wherein: i is an integer ranging from 1 to 6, j is an integer ranging from 1 to 6, and R.sub.1, R.sub.2, R.sub.3, and R.sub.4, identical or different, represent a hydrogen atom or a C.sub.1-C.sub.10 alkyl chain, from 40% to 65% of at least one photocrosslinkable urethane dimethacrylate compound P2 according to formula (IV): ##STR00013## wherein: i is an integer ranging from 1 to 6, j is an integer ranging from 1 to 6, k is an integer ranging from 2 to 100, l is an integer ranging from 1 to 10, R1, R3, R3 and R4, identical or different, represent a hydrogen atom or a C.sub.1-C.sub.10 alkyl chain, -A- represents a linear or branched C.sub.1-C.sub.20 divalent alkylene group, or a C.sub.5-C.sub.20 divalent cycloalkylene radical, from 0% to 10% of an acrylate copolymer film-forming polymer P3, and from 1% to 10% of an -hydroxyketone photoinitiator, an acylphosphine oxide photoinitiator, or mixtures thereof, wherein the percentages are expressed in relation to the total weight of said composition.

2. The composition according to claim 1, wherein the composition further comprises a (meth)acrylate monomer, and wherein the proportion of the (meth)acrylate monomer is less than or equal to 10% by weight in relation to the total weight of said composition.

3. The composition of claim 1, comprising from 25% to 35% by weight of the compound P1 in relation to the total weight of said composition.

4. The composition of claim 1, comprising from 50% to 60% by weight of the compound P2 in relation to the total weight of said composition.

5. A kit comprising: a photocrosslinkable cosmetic composition according to claim 1, an abrasive material having a granulometry greater than or equal to 200 m, and a LED lamp or an UV lamp.

6. A makeup and/or care method of a nail and/or false nail, comprising the following steps: a) applying, onto a nail or a false nail, a photocrosslinkable composition as defined in claim 1, whereby a coat consisting of at least one layer of said photocrosslinkable composition is deposited, and b) exposing the coated nail or false nail obtained following step a) to UV or visible light radiation, whereby the photocrosslinking of the photocrosslinkable compounds P1 and P2 of said composition is carried out.

7. The method according to claim 6, wherein the nail or false nail is previously coated with a nail varnish composition or an adhesive flexible material.

8. A makeup and/or care method of a nail and/or false nail, comprising the following steps: i) rubbing the surface of a nail or false nail with an abrasive material having a granulometry greater than or equal to 200 m, ii) applying a photocrosslinkable composition according to claim 1, whereby a coat consisting of at least one layer of said photocrosslinkable composition is deposited, and iii) exposing the coated nail or false nail obtained following step ii) to a LED lamp or an UV lamp, whereby the photocrosslinking of the photocrosslinkable composition is carried out.

Description

EXAMPLES

(1) The present invention will now be illustrated using the following example.

Example 1

(2) A transparent photocrosslinkable composition according to the invention is applied onto nails. The nail coated with the photocrosslinkable composition is then crosslinked for 4 minutes under a CND Shellac brand 36 W UV lamp (wavelength: 365-370 nm). After crosslinking, the surface is cleaned with cotton wool soaked in isopropanol.

(3) TABLE-US-00001 Isophorone Urethane Dimethacrylate 29.10% (X-851-1066 - ESSTECH, Inc.) PEG 400 Extended Urethane Dimethacrylate 58.10% (X-726-0000 - ESSTECH, Inc.) 50% acrylic copolymer in butyl acetate 2% (PECOREZ AC 50 - PHOENIX CHEMICAL) Ethyl acetate 5.80% Hydroxy Cyclohexylphenyl Ketone photoinitiator 5% (Irgacure 184 - BASF)

(4) The ingredients of the composition are introduced into an opaque flask and placed under stirring protected from light with a Rayneri laboratory mixer until a homogeneous mixture is obtained. An aluminum foil will have been previously positioned on the top of the container to prevent the solvents from evaporating.

(5) A varnish exhibiting a satisfactory gloss and satisfactory stability on the nail is obtained.

Example 2: Gloss Measurement

(6) A coat of a composition according to Example 1 above and a coat of a comparative composition (Light Elegance P2 UV topcoat) are applied separately at a thickness of 300 m on the black part of a contrast card which is 8 cm long and 5 cm wide.

(7) Both coats applied to a contrast card are placed without delay on a 1 cm thick, 12 cm long and 10 cm wide sheet of glass. The sheet of glass is then positioned without delay at the center of the CND Shellac brand 36 W UV lamp. The crosslinking time is in the region of 4 min for the example of an embodiment and 2 min for the comparative composition Light Elegance P2 UV topcoat. The coats are then cleaned with cotton wool soaked in isopropanol.

(8) The gloss at 60 is then measured for each of the two coats, using the Micro-TRI-Gloss (BYK Gardner) gloss meter according to the conventional method specified in the instructions provided by the manufacturer.

(9) The results are shown in the following table, demonstrating that the photocrosslinkable composition according to Example 1 exhibits a superior gloss to the comparative composition, Light Elegance P2 UV topcoat.

(10) TABLE-US-00002 Composition according Comparative to Example 1 composition Gloss at 85 76 60 (mean value out of 16 (mean value out of 10 measurements) measurements)