# US 8,772,212 B2 · Liquid personal cleansing composition

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 8,772,212 B2
- Document ID: US8772212B2
- Status: Granted
- Kind: B2
- Application number: 12/187,793
- Filed: 2008-08-07
- Published: 2010-02-11
- Granted: 2014-07-08
- Earliest claimed: 2008-08-07
- Assignees: Conopco, Inc.
- Applicants: Nicolas E. Restrepo; Alexander Kingston Shutak; Joseph James Regan; Bruce Casbarro; Liang Sheng Tsaur; Vivek Subramanian
- Inventors: Nicolas E. Restrepo; Alexander Kingston Shutak; Joseph James Regan; Bruce Casbarro; Liang Sheng Tsaur; Vivek Subramanian
- Web page: https://patentgrep.com/patent/US8772212B2

## CPC

- A61K 8/042: {Gels}
- A61K 8/0291: {Micelles}
- A61K 8/0295: {Liquid crystals}
- A61K 8/31: Hydrocarbons
- A61K 8/361: {Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof}
- A61K 8/42: Amides
- A61K 8/463: {containing sulfuric acid derivatives, e.g. sodium lauryl sulfate}
- A61K 8/737: {Galactomannans, e.g. guar; Derivatives thereof}
- A61K 8/8147: {Homopolymers or copolymers of acids; Metal or ammonium salts thereof, e.g. crotonic acid, (meth)acrylic acid; Compositions of derivatives of such polymers}
- A61Q 5/02: Preparations for cleaning the hair
- A61Q 5/12: Preparations containing hair conditioners
- A61Q 19/10: Washing or bathing preparations
- A61K 2800/412: Microsized, i.e. having sizes between 0.1 and 100 microns
- A61K 2800/52: Stabilizers
- A61K 2800/592: Mixtures of compounds complementing their respective functions
- 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 stable, multiphase liquid isotropic cleansing composition is described that contains high levels of Petrolatum and shows a substantial decrease in reflectance compared with isotropic cleansing compositions containing other oils and liquid crystalline compositions with similar levels of oils. The inventive composition has a total of less than 2% by wt. of other oils such as glyceride, mineral and silicone oils, or blends thereof.

## Claims

### Claim 1

A stable, multiphase isotropic cleansing composition, comprising:
a. about 99 to 84% by wt. of an aqueous phase based on the total composition;
b. about 1 to 16% by wt. of petrolatum having a melting point between 35 and 80 C and a minimum viscosity of 10 kPa-s at 32 C, wherein the concentration is based on the total composition;
c. wherein the aqueous phase includes about 1 to 25% by wt. of a non-soap anionic surfactant and about 1 to 20% by wt. of an amphoteric surfactant based on the total composition;
d. wherein the aqueous phase contains about 0.5 to 10% by wt. of total polymeric dispersion stabilizing agent(s) based on the total composition;
e. less than about 2% by wt. of total hydrophobic glyceride(s), hydrocarbon(s) excluding petrolatum, or silicone oils or blends and derivatives thereof based on the total composition;
f. less than about 1.5% by wt. of total liquid crystalline structurant(s), crystalline hydroxyl-containing stabilizer(s), C10-C22 ethylene glycol fatty acid ester(s), silica(s), clay(s) or blends thereof based on the total composition; and
g. wherein the cleansing composition has a maximum reflectance of 80% as measured by the standard reflectance method and wherein greater than 50% by volume of the petrolatum particles have a diameter greater than 100 microns as measured by the standard particle size method.

### Claim 2 (depends on 1)

The cleansing composition of claim 1 wherein the composition contains only an aqueous and an oil phase.

### Claim 3

A process of preparing a stable, multiphase isotropic cleansing composition, comprising the steps of in no particular order:
a. blending water, surfactant(s), and polymeric dispersion stabilizing agent(s) until uniform to make an oil-free, transparent, isotropic aqueous preblend;
b. feeding the aqueous preblend into a blending tube, the aqueous preblend moving through the blending tube at a rate from about 22.7 to about 113.7 kg (50-250 lbs.) per minute;
c. feeding petrolatum with a melting point between 35 and 80 C and a minimum viscosity of 10 kPa-s at 32 C into the blending tube via a multiport injector at a rate sufficient to form a blend with a wt. % ratio range of about 1% petrolatum to 99% aqueous preblend to about 16% petrolatum to 84% aqueous preblend forming petrolatum particles; and
d. wherein the cleansing composition has a maximum reflectance of 80% as measured by the standard reflectance method and wherein greater than 50% by volume of the petrolatum particles have a diameter greater than 100 microns as measured by the standard particle size method.

### Claim 4 (depends on 3)

The process of claim 3 wherein the temperature of the aqueous preblend is adjusted to about 40 C or less and the temperature of the petrolatum is adjusted within the range of 50 to 70 C prior to blending.

### Claim 5 (depends on 3)

The process of claim 3 wherein the multiport injector has a minimum of 3 conduit ports.

### Claim 6 (depends on 5)

The process of claim 5 wherein the ports of the multiport injector are arranged in a symmetric pattern.