# US 5,702,709 A · Skin allergen and irritant barrier lotion

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- Number: US 5,702,709 A
- Document ID: US5702709A
- Status: Granted
- Kind: A
- Application number: 08/423,099
- Filed: 1995-04-18
- Granted: 1997-12-30
- Earliest claimed: 1995-04-18
- Assignees: Enviroderm Pharmaceuticals, Inc.
- Inventors: Anthony A. Schulz; David J. Buddrus
- Web page: https://patentgrep.com/patent/US5702709A

## CPC

- A61K 8/26: Aluminium; Compounds thereof
- A61K 8/34: Alcohols
- A61K 8/37: Esters of carboxylic acids
- A61K 9/0014: {Skin, i.e. galenical aspects of topical compositions (non-active ingredients are additionally classified in A61K47/00; A61K9/0009, A61K9/0021, A61K9/7015, A61K9/7023 take precedence; cosmetic preparations A61K8/00, A61Q; preparations for wound dressings or bandages A61L26/00)}
- A61K 9/7015: {Drug-containing film-forming compositions, e.g. spray-on}
- A61K 47/02: Inorganic compounds
- 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
- A61K 2800/75: Anti-irritant
- 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

A lotion capable of protecting the skin from the effects of exposure to irritants and allergens, particularly those produced by toxic plants such as poison ivy, has the following composition, wherein the proportions are by weight: ______________________________________ organophilic clay 3.0-10.0% volatile alcoholic solvent 20.0-30.0% cosmetically acceptable inert 15.0-25.0% emollient vehicle thickener 2.0-10.0% water q.s.p. 100.0% ______________________________________

## Claims

### Claim 1

A lotion for protecting the skin from contact with allergens and irritants consisting essentially of
______________________________________ quatermium-18 bentonite 3.0-10.0% volatile alcoholic solvent 20.0-30.0% loweralkyl ester of a lower 15.0-25.0% dibasic acid colloidal clay thicknener 2.0-10.0% selected from the group consisting of naturally occurring montmorillonite, bentonite, beidellite, hectorite, saponite and stevensite water q.s.p. 100.0% ______________________________________
wherein all percentages are by weight.

### Claim 2 (depends on 1)

The lotion of claim 1 wherein said quaternium-18 bentonite is present in an amount of about 3.0% to about 7.0% by weight.

### Claim 3 (depends on 2)

The lotion of claim 2 wherein said quaternium-18 bentonite is present in an amount of about 5.0% by weight.

### Claim 4 (depends on 1)

The lotion of claim 1 wherein said volatile alcoholic solvent is present in amount of about 23.0% to about 27.0% by weight.

### Claim 5 (depends on 4)

The lotion of claim 4 wherein said volatile alcoholic solvent is present in amount of about 25.0% by weight.

### Claim 6 (depends on 1)

The lotion of claim 1 wherein said loweralkyl ester of a lower dibasic acid is present in an amount of about 18.0% to about 22.0% by weight.

### Claim 7 (depends on 6)

The lotion of claim 6 wherein said loweralkyl ester of a lower dibasic acid is present in an amount of about 20.0% by weight.

### Claim 8 (depends on 1)

The lotion of claim 1 wherein said colloidal clay thickener is present in an amount of about 3.0% to about 7.0% by weight.

### Claim 9 (depends on 8)

The lotion of claim 8 wherein said colloidal clay thickener is present in an amount of about 5.0% by weight.

### Claim 10 (depends on 1)

The lotion of claim 1 wherein said quaternium-18 bentonite is activated.

### Claim 11 (depends on 1)

The lotion of claim 1 wherein said volatile alcoholic solvent is ethanol.

### Claim 12 (depends on 1)

The lotion of claim 1 wherein said emollient vehicle is diisopropyl adipate.

### Claim 13 (depends on 1)

The lotion of claim 1 wherein said colloidal clay thickener is bentonite.

### Claim 14

A lotion for protecting the skin from contact with allergens and irritants comprising
______________________________________ quaternium 18 bentonite 5.0% cosmetically acceptable 25.0% denatured ethanol diisopropyl adipate 20.0% bentonite 5.0% methyl paraben 0.100% benzyl alcohol 0.200% purified water 44.7% ______________________________________