# US 12,178,901 B2 · Polymer and a topical composition comprising the polymer

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- Number: US 12,178,901 B2
- Document ID: US12178901B2
- Status: Granted
- Kind: B2
- Application number: 17/616,074
- Filed: 2020-05-26
- Published: 2022-10-20
- Granted: 2024-12-31
- Earliest claimed: 2019-06-04
- Assignees: Conopco, Inc.
- Applicants: Conopco, Inc.
- Inventors: Praful Gulab Rao Lahorkar; Shiyong Liu; Rajkumar Perumal; Shengyu Shi; Ashish Anant Vaidya; Chenzhi Yao; Xiaoxia Yang
- Web page: https://patentgrep.com/patent/US12178901B2

## CPC

- A61K 8/8152: {Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers}
- C08F 220/286: {and containing polyethylene oxide in the alcohol moiety, e.g. methoxy polyethylene glycol (meth)acrylate}
- A61Q 17/04: Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
- A61Q 19/00: Preparations for care of the skin
- A61Q 19/02: for chemically bleaching or whitening the skin
- C08F 220/365: {containing further carboxylic moieties}
- C08F 220/387: {and containing nitrogen and oxygen}
- A61K 2800/54: Polymers characterized by specific structures/properties
- A61K 2800/57: Compounds covalently linked to a(n inert) carrier molecule, e.g. conjugates, pro-fragrances
- 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)
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS

## Abstract

The present invention relates to a polymer of formula I, a cosmetic composition comprising the polymer of formula I, a method of synthesizing the polymer of formula I; and use of the polymer of formula I to provide a benefit in a photoresponsive way.

## Claims

### Claim 1

A polymer according to formula I
wherein,
R═R1═H or carbon atoms in the range from 1 to 2,
R2═R3═H or carbon atoms in the range from 1 to 5,
A=L-PR-L1-B wherein,
L=—R5—NH—COO—R6—R7 or —R5—COO—R6—R7 wherein,
R5 is carbon atom in the range from 1 to 6,
R6 is carbon atom in the range 1 to 4,
R7 is sulphur; or R7 is a triazine linked to —CH2—CH2—N(CH2—CH3)—,
PR is a photoresponsive substance,
L1 is carbonate linker,
B is a benefit agent,
R4 is A; or R4 is a group selected from —[CH2—CH2—O—]x, —[CH2—CH(R)—O—]x and mixtures thereof, where x is in the range from 1 to 10;
m=1 to 10,000; and n=1 to 10,000; and
wherein the photoresponsive substance is selected from the group consisting of a coumarin compound and a hydroquinone compound.

### Claim 2 (depends on 1)

The polymer according to claim 1, wherein R2 or R3 independently is carbon atoms in the range from 1 to 2.

### Claim 3 (depends on 1)

The polymer according to claim 1, wherein R4═—[CH2—CH2—O—]x where x is in the range from 1 to 5.

### Claim 4 (depends on 1)

The polymer according to claim 1, wherein L is —R5—NH—COO—CH3-Triazine-CH2—CH2—N(CH2—CH3)—.

### Claim 5 (depends on 1)

The polymer according to claim 1, wherein the benefit agent is selected from a cooling agent, a fragrance, an antimicrobial compound and mixtures thereof.

### Claim 6 (depends on 1)

The polymer according to claim 1, wherein the polymer is:

### Claim 7 (depends on 1)

A cosmetic composition comprising the polymer as claimed in claim 1.

### Claim 8 (depends on 7)

The composition according to claim 7 further comprising from 0.01 to 10 wt % UVA organic sunscreen.

### Claim 9 (depends on 7)

The composition according to claim 7 further comprising from 0.01 to 10 wt % UVB organic sunscreen.

### Claim 10 (depends on 7)

The composition according to claim 7 further comprising a skin lightening agent selected from the group consisting of niacinamide, vitamin B6, 12-hydroxystearic acid, glutathione precursors, galardin, 4-alkyl substituted resorcinol, and mixtures thereof.

### Claim 11 (depends on 7)

The composition according to claim 7 further comprising from 4 to 25 wt % fatty acid.

### Claim 12 (depends on 7)

The composition according to claim 7 further comprising from 0.1 to 10 wt % soap.

### Claim 13 (depends on 1)

A method comprising incorporating the polymer according to claim 1 in a composition for providing a benefit to the skin in a photoresponsive way.