# US 11,896,690 B2 · Elastomeric articles having skin care properties and methods for their production

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- Number: US 11,896,690 B2
- Document ID: US11896690B2
- Status: Granted
- Kind: B2
- Application number: 17/528,377
- Filed: 2021-11-17
- Published: 2022-03-10
- Granted: 2024-02-13
- Earliest claimed: 2016-12-30
- Assignees: Skinprotect Corporation Sdn Bhd
- Applicants: Skinprotect Corporation Sdn Bhd
- Inventors: Khon Pu Foo; Chin Keong Lim
- Web page: https://patentgrep.com/patent/US11896690B2

## CPC

- A61K 8/14: Liposomes; Vesicles
- A41D 13/087: {especially for fingers}
- A41D 19/0082: {Details}
- A41D 19/015: Protective gloves {(A41D19/0055 takes precedence)}
- A61B 42/10: Surgical gloves
- A61F 6/04: Condoms, sheaths or the like {, e.g. combined with devices protecting against contagion}
- A61K 8/0208: {Tissues; Wipes; Patches}
- A61K 8/0216: {Solid or semisolid forms}
- A61K 8/9789: Magnoliopsida [dicotyledons]
- A61Q 19/00: Preparations for care of the skin
- A61Q 19/005: {Preparations for sensitive skin}
- A61Q 19/007: {Preparations for dry skin}
- A61Q 19/08: Anti-ageing preparations
- A41D 2400/32: Therapeutic use
- A41D 2600/20: for working activities
- A61B 2017/00526: {Methods of manufacturing}
- 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)
- A41D: OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS

## Abstract

The present application provides elastomeric articles that are able to deliver skin care properties to a person wearing or coming into contact with the article. The articles comprise an elastomeric film a plant stem cell material. The plant stem cell material may be in the form of a bilayer membrane-encapsulated plant stem cell material. The plant stem cell material may be present as a layer or coating on a surface of the elastomeric film. Also provided are methods for the production of the articles.

## Claims

### Claim 1

An elastomeric article comprising (a) an elastomeric film and (b) an effective amount of a plant stem cell material immobilised in a neat form in a dry coating on a surface of the elastomeric film, wherein the plant stem cell material is in the form of a plant stem cell lysate.

### Claim 2 (depends on 1)

The elastomeric article of claim 1, wherein the plant stem cell material is a dedifferentiated plant stem cell material.

### Claim 3 (depends on 1)

The elastomeric article of claim 1, wherein the plant is selected from: plants of the Rosaceae family, apple varieties, grape varieties, Symphytum, alpine rose, argan trees, dwarf soapwort, tea plants under Family Theaceae, Aloe Vera under Family Asphodelaceae, Citrus under Family Rutaceae, Cucumis under Family Cucurbitaceae, Hibiscus under Family Malvaceae, Lavandula under Family Lamiaceae, Calendula under Family Asteraceae, Witch Hazel, Neem trees, Avocado trees and Algae.

### Claim 4 (depends on 1)

The elastomeric article of claim 1, comprising two or more plant stem cell materials.

### Claim 5 (depends on 1)

The elastomeric article of claim 1, wherein the amount of plant stem cell material on the surface of the elastomeric film is between 0.0001 and 80% by weight of the article.

### Claim 6 (depends on 1)

The elastomeric article of claim 1, in the form of a glove, fingercot or condom.

### Claim 7 (depends on 1)

The elastomeric article of claim 1, wherein the elastomeric film has an average thickness of between 0.01 and 3.0 mm.

### Claim 8 (depends on 1)

The elastomeric article of claim 1, wherein the elastomer of the elastomeric film is selected from the group consisting of rubber, nitrile rubber, polyurethane, polyisoprene, polychloroprene, acrylic polymers, polybutadienes, copolymers or blends of these polymers, their monomers or other polymers/monomers, and modified forms of these polymers or copolymers.

### Claim 9

A method for the manufacture of an elastomeric article comprising an elastomeric film having skin care properties, the method comprising applying a coating composition containing an effective amount of a plant stem cell material in a neat form onto a surface of the elastomeric film, and drying the coating composition to immobilise the plant stem cell material on the surface of the elastomeric film, wherein the plant stem cell material is in the form of a plant stem cell lysate.

### Claim 10 (depends on 9)

The method of claim 9, wherein the plant stem cell material is applied through a dipping process, spraying method or a tumbling method.

### Claim 11 (depends on 9)

The method of claim 9, wherein the coating composition has a water content of at least 50% by weight at the time of applying the coating composition onto the surface of the elastomeric film.

### Claim 12 (depends on 11)

The method of claim 11, wherein the coating composition is dried at a temperature below 60° C. to yield a dry surface.

### Claim 13 (depends on 7)

The elastomeric article of claim 7, wherein the elastomeric film has a modulus at 500% of less than 15 MPa, and an elongation at break of at least 500%.

### Claim 14 (depends on 9)

The method of claim 9, wherein the coating composition is applied at a temperature of below 60° C.

### Claim 15 (depends on 9)

The method of claim 9, wherein the coating composition has a pH of between 5.0 and 8.0.

### Claim 16 (depends on 9)

The method of claim 9, wherein the plant stem cell material is a dedifferentiated plant stem cell material.

### Claim 17 (depends on 9)

The method of claim 9, wherein the plant is selected from: plants of the Rosaceae family, apple varieties, grape varieties, Symphytum, alpine rose, argan trees, dwarf soapwort, tea plants under Family Theaceae, Aloe Vera under Family Asphodelaceae, Citrus under Family Rutaceae, Cucumis under Family Cucurbitaceae, Hibiscus under Family Malvaceae, Lavandula under Family Lamiaceae, Calendula under Family Asteraceae, Witch Hazel, Neem trees, Avocado trees and Algae.

### Claim 18 (depends on 9)

The method of claim 9, wherein the coating composition contains two or more plant stem cell materials.

### Claim 19 (depends on 9)

The method of claim 9, wherein the elastomeric film has an average thickness of between 0.01 and 3.0 mm.

### Claim 20 (depends on 9)

The method of claim 9, wherein the elastomer of the elastomeric film is selected from the group consisting of rubber, nitrile rubber, polyurethane, polyisoprene, polychloroprene, acrylic polymers, polybutadienes, copolymers or blends of these polymers, their monomers or other polymers/monomers, and modified forms of these polymers or copolymers.