# US 11,439,584 B2 · Complete anhydrous sunscreen composition with under water technology

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- Number: US 11,439,584 B2
- Document ID: US11439584B2
- Status: Granted
- Kind: B2
- Application number: 15/551,230
- Filed: 2016-02-10
- Published: 2018-01-18
- Granted: 2022-09-13
- Earliest claimed: 2015-02-16
- Assignees: Frezyderm S.A.
- Applicants: Frezyderm S.A.
- Inventors: Anastasiou Efthimios
- Web page: https://patentgrep.com/patent/US11439584B2

## CPC

- A61K 8/895: containing silicon bound to unsaturated aliphatic groups, e.g. vinyl dimethicone
- A61K 8/25: Silicon; Compounds thereof
- A61K 8/31: Hydrocarbons
- A61K 8/415: {Aminophenols}
- A61K 8/894: modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
- A61Q 17/00: Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
- A61Q 17/04: Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
- A61K 2800/805: Corresponding aspects not provided for by any of codes A61K2800/81 - A61K2800/95
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS

## Abstract

The invention provides a 100% anhydrous sunscreen composition and a use of this sunscreen composition with very high water and sweat resistance properties which can be applied on a wet skin, either in the presence of water by repelling water or water droplets respectively or in under-water conditions. The present invention describes a sunscreen composition comprising a silicone organic elastomer blend comprising Dimethicone/Bis-Isobutyl PPG-20 Crosspolymer in Isododecane in a concentration range from about 30% to about 90% w/w and a silicone elastomer comprising Dimethicone/Vinyl Dimethicone Crosspolymer and Silica in a concentration range from about 0.1% to about 10% w/w. The sunscreen may be applied on the skin in the presence of water (in wet and/or under-water conditions). Further, the new sunscreen product allows the consumer to enter water directly after the application of the sunscreen product on his dry or already wet skin.

## Claims

### Claim 1

A method for applying an anhydrous sunscreen composition, said sunscreen having an SPF >=50, 50, 30, or <30, wherein the sunscreen comprises a silicone organic elastomer blend and a silicone elastomer, wherein the silicone organic elastomer blend comprises Dimethicone/Bis-Isobutyl PPG-20 Crosspolymer in Isododecane in a concentration range from about 30% to about 90% of total weight of the composition, wherein the silicone elastomer comprises Dimethicone/Vinyl Dimethicone Crosspolymer and Silica in a concentration range from about 0.1% to about 10% of total weight of the composition, wherein the sunscreen further comprises spherical glass beads comprising soda lime, solid glass microspheres with a mean size of 3.5-5.5 microns, wherein the method comprises:
applying the sunscreen on skin that is underwater.

### Claim 2 (depends on 1)

The method of claim 1, further comprising conducting a subsequent application step of the sunscreen composition when the skin is wet from being under water, wherein the application step repels water or water droplets.

### Claim 3 (depends on 2)

The method of claim 2, wherein the skin can come into contact with water directly after the sunscreen composition is applied in the subsequent application step.

### Claim 4 (depends on 1)

The method of claim 1, wherein the Dimethicone/Bis-Isobutyl PPG-20 Crosspolymer in Isododecane is present in a concentration range from about 55% to about 65% of total weight of the composition, and wherein the Dimethicone/Vinyl Dimethicone Crosspolymer and Silica is present in a concentration range from about 0.5% to about 1.5% of total weight of the composition.

### Claim 5 (depends on 1)

The method of claim 1, wherein the Dimethicone/Bis-Isobutyl PPG-20 Crosspolymer in Isododecane is present in a concentration about 60.545% of total weight of the composition and wherein the Dimethicone/Vinyl Dimethicone Crosspolymer and Silica is present in a concentration about 1% of total weight of the composition.

### Claim 6 (depends on 1)

The method of claim 1, wherein the silicone organic elastomer blend comprises Dimethicone/Bis-Isobutyl PPG-20 Crosspolymer in Isohexadecane.

### Claim 7 (depends on 1)

The method of claim 1, wherein the composition further comprises organic or/and inorganic UVA & UVB-filters in a concentration range from about 10% to about 50% of total weight of the composition directly dependable to the targeted SPF.

### Claim 8 (depends on 7)

The method of claim 7, wherein the UVA-filter is selected from a group consisting of Diethylamino Hydroxybenzoyl Hexyl Benzoate, Butyl Methoxydibenzoylmethane, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, and Benzophenone-3 in a ratio directly relatable to the targeted SPF.

### Claim 9 (depends on 7)

The method of claim 7, wherein the UVB-filter is selected from a group consisting of Octocrylene, Ethylhexyl Methoxycinnamate, Ethylhexyl Salicylate, Isoamyl Methoxycinnamate, and Homosalate.

### Claim 10 (depends on 7)

The method of claim 7, wherein Octocrylene, Ethylhexyl Methoxycinnamate and/or Ethylhexyl Salicylate are used as UVB-filter in a ratio directly relatable to the targeted SPF.

### Claim 11 (depends on 7)

The method of claim 7, wherein Diethylamino Hydroxybenzoyl Hexyl Benzoate is used as UVA-filter in a ratio directly dependable to the targeted SPF.

### Claim 12 (depends on 1)

The method of claim 1, wherein the composition further comprises iron oxides, yellow 5 and/or titanium dioxide.

### Claim 13 (depends on 12)

The method of claim 12, wherein the iron oxides, yellow 5 and/or titanium dioxide are selected from a group consisting of CI 77492, CI 77491, CI 77499 in Ricinus communis oil, CI 19140 in Ricinus communis oil, and CI 77891 in Ricinus communis oil.

### Claim 14 (depends on 12)

The method of claim 12, wherein the iron oxides and/or titanium dioxide are selected from a group consisting of iron oxides CI 77499 (and) isopropyl titanium triisostearate, iron oxides CI 77492 (and) isopropyl titanium triisostearate, iron oxides CI 77491 (and) isopropyl titanium triisostearate, titanium dioxide, and isopropyl titanium triisostearate.

### Claim 15 (depends on 1)

The method of claim 1, wherein the composition further comprises at least one member which is selected from each of the groups a), b), c), d) and e), wherein:
a) is at least one emollient ester selected from the group consisting of dibutyl adipate, phenethyl benzoate, caprylic/capric triglyceride, C12-15 alkyl benzoate, PPG-3 benzyl ether myristate, C12-13 alkyl lactate, isodecyl salicylate, Di-C12-13 alkyl malate, isoamyl laurate, propylheptyl caprylate, butyloctyl salicylate, polycrylene, dicaprylyl carbonate, dicaprylyl ether, 2-octyldodecylmyristate, isohexadecane, dimethyl capramide, Crambe abyssinica oil, squalene, rice bran/germ oil, Helianthus annuus seed oil, Ricinus communis oil, dimethicone, cyclomethicone, caprylyl methicone, dimethicone copolyol, undecylcrylene dimethicone, isopropyl isostearate, isostearyl isostearate, octyldodecanol, coco-glycerides, C13-15 Alkane, C15-19 Alkane, C17-23 Alkane, C21-28 Alkane, propylene glycol dipelargonate, diisopropyl sebacate, isononyl isononanoate, isocetyl stearoyl stearate, dipentaerithrityl hexacaprylate/hexacaprate, isodecyl neopentanoate, and natural essential oils;
b) is at least one anti-aging ingredient selected from the group consisting of ethyl ferulate, Rosmarinus officinalis, disodium uridine phosphate, polyglyceryl-5 trioleate, Rosmarinus officinalis extract, and Helianthus annuus seed oil;
c) is at least one active ingredient, selected from a group consisting of a-bisabolol, Crambe maritima, Bixa orellana, retinyl palmitate, tocopheryl acetate, ascorbyl tetraisopalmitate, Pistacia lentiscus gum, Salicornia herbacea extract, Rosa moschata seed oil, teprenone, Serenoa serrulata, butyl avocadate, dipalmitoyl hydroxyproline, Glycine soja seed oil, ceramide-2, Zea mays oil, Crambe abyssinica seed oil phytosterol esters, Echium plantagineum seed oil, Cardiospermum halicacabum flower/leaf/vine extract, phytosphingosine, Helianthus annuus seed oil unsaponifiables, sodium caproyl/lauryl lactylate, triethyl citrate, Salvia officinalis oil, kojic acid dipalmitate, lecithin, arachidyl propionate, ethyl linoleate, ethyl linolenate, ethyl oleate, bakuchiol, Juglans regia, Sesamum indicum oil, Triticum vulgare germ oil, Arnica montana, Cupressus sempervirens, Polygonatum multiflorum, Cocos nucifera oil, Butyrospermum parkii, Orbignya oleifera, Mangifera indica, Irvingia gabonensis kernel butter, Hordeum vulgare, Argania spinosa, Melia azadirachta, Hydnocarpus kurzii, Nigella sativa, Humulus lupulus strobili, Coffea arabica seed oil, Brassica campestris sterols, Lupinus albus seed extract, oleic/linoleic/linolenic polyglycerides, Arachis hypogaea, Daucus carota sativa, β-caroten, Passiflora incarnata oil, Boswellia serrata gum, palmitoyl glycine, Eucalyptus maculata citriodora extract, p-menthane 3,8-diol, ethyl butylacetylaminopropionate, Hypericum perforatum oil, Olea europaea, Centella asiatica, and Isochrysis galbana extract;
d) is at least one preservative selected from a group consisting of caprylyl glycol, o-cymen-5-ol, and propylparaben; and
e) is at least one powder selected from a group consisting of glass beads, polymethyl methacrylate, silica, ethylene acrylic acid copolymer, nylon-10/10, talc, mica, Oryza sativa powder, synthetic fluorphlogopite, acrylates/octylacrylamide copolymer, boron nitride, polyamide-5, aluminum starch octenylsuccinate, silica silylate, silica dimethyl silylate, cerium dioxide, lauryl methacrylate/glycol dimethacrylate crosspolymer, Zea mays starch, Oryza sativa starch, Avena sativa kernel flour, magnesium aluminum silicate, phospholipids, polyethylene, beads/granules from natural or synthetic origin, cellulose, hydroxyethylcellulose, and hydroxypropyl cellulose.

### Claim 16

A sunscreen comprising a silicone organic elastomer blend and a silicone elastomer, wherein the silicone organic elastomer blend consists of Dimethicone/Bis-Isobutyl PPG-20 Crosspolymer in Isododecane in a concentration range from about 55% to about 65% of total weight of the composition, wherein the silicone elastomer comprises Dimethicone/Vinyl Dimethicone Crosspolymer and Silica in a concentration range from about 0.1% to about 10% of total weight of the composition, and wherein the sunscreen further comprises spherical glass beads comprising soda lime, solid glass microspheres with a mean size of 3.5-5.5 microns.

### Claim 17 (depends on 1)

The method of claim 1, wherein the sunscreen composition is visible under water.

### Claim 18 (depends on 16)

The sunscreen of claim 16, wherein the sunscreen is visible under water.