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Composition and method of producing personal care compositions with improved deposition properties

a technology of hydrophobic structure and composition, which is applied in the direction of detergent compounding agent, hair cosmetics, liquid soaps, etc., can solve the problems of cationic polymers, harmful to the environment, irritate the skin, etc., and achieve stable and denser hydrophobic structure, improve the conditioning effect, and improve the conditioning

Inactive Publication Date: 2014-09-18
HERCULES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes the use of multi-tail surfactants to improve the conditioning benefits of nonionic hydrophobically modified polymer-containing compositions. When combined with these surfactants, the nonionic polymers form more stable and dense structures on keratin substrates, leading to better conditioning. This results in shampoo compositions that provide similar or better results than cationic polymer counterparts. Overall, this patent provides a solution for improving the conditioning effects of nonionic polymers in cosmetic compositions.

Problems solved by technology

Additionally, conditioners containing cationic polymers, with or without silicones / emollients, can irritate skin and are considered to be harmful to the environment despite providing good cleansing and detangling properties for hair.
Unfortunately, attempts at replacing the cationic polymers in these compositions have been found lacking in terms of their ability to confer significant and predictable conditioning to keratin substrates as compared to the environmentally harmful, cationically charged polymers.
Also, U.S. Pat. No. 5,855,878 discloses a cosmetic composition containing a hydrophobically modified nonionic polymer and an unsaturated quaternary ammonium surfactant, however, such composition is incapable of providing adequate performance for conditioning hair due to the surfactants claimed therein being incompatible with typical shampoo compositions.
The performance of water-soluble and water-insoluble hydrophobically modified celluloses has been found lacking in terms of their ability to confer significant and predictable conditioning to keratin substrates.
Additionally, nonionic hydrophobically modified polysaccharides have also been found lacking in terms of their ability to confer significant and predictable conditioning to keratin substrates without using environmentally harmful cationically charged polymers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0081]A gel of a water-soluble cetyl-modified hydroxyethyl cellulose (C16 HMHEC, 1.14 wt % cetyl substitution, 3.8 molar hydroxyethyl substitution, Mw=824,000 Dalton) that formed above 1.5-2 wt % polymer concentration and underwent syneresis upon dilution in water was used in this example and showed very good efficacy in a 2-in-1 conditioning shampoo without the need for any cationic moiety and without depositing any silicone. For bleached hair, wet hair comb energy was reduced 30% relative to the wet comb energy for the no polymer control shampoo, and silicone deposition was less than 10 ppm. Wet comb energies for the shampoo containing the cationic guar benchmark, N-HANCE® 3916 product, were reduced 40% relative to the no polymer shampoo.

[0082]This example demonstrates that the nonionic hydrophobic polymer that undergoes syneresis in aqueous solution or in the shampoo on dilution can achieve nearly 75% of the wet comb energy reduction achieved by the cationic polymer. The dry comb...

example 2

[0083]A water-soluble C16 HMHEC (1.04 wt % cetyl substitution, 4.0 molar hydroxyethyl substitution, Mw=1,200,000 Dalton) was used in this Example. This polymer formed a gel at 3-4 wt % polymer in water but showed syneresis at 2 wt %, was dissolved in 5 wt % ammonium lauryl sulfate to give a clear solution, and underwent syneresis upon dilution with water. This polymer showed very good efficacy in 2-in-1 conditioning shampoos without the need for any cationic moiety and without depositing any silicone. For bleached hair, wet hair comb energy was reduced by 28% relative to the no polymer control shampoo, and silicone deposition was less than 10 ppm. Wet hair comb energy reduction was 70% of the wet comb energy reduction achieved by cationic guar. The dry comb energies for the tresses treated with a shampoo containing the polymers of the invention were equal to the dry comb energy measured on tresses treated with the shampoo containing no polymer and the shampoo containing cationic gua...

example 3

Comparative

[0084]A shampoo was made with a water-soluble cetyl-modified hydroxyethyl cellulose (POLYSURF® 67 product, 0.5 wt % cetyl substitution, 2.5 molar hydroxyethyl substitution, Mw=830,000 Dalton) that did not form a gel above 1.5-2 wt % polymer concentration and did not undergo syneresis upon dilution in water. For bleached hair, wet hair comb energy was reduced by 13% relative to the wet comb energy for the no polymer control shampoo, and silicone deposition was less than 10 ppm.

[0085]This example demonstrates that the nonionic hydrophobic polymer that does not undergo syneresis does not show as good efficacy in the 2-in-1 conditioning shampoo as a polymer that undergoes dilution deposition (Examples 1-3). The dry comb energies for tresses treated with a shampoo containing the commercial Polysurf 67 product was equivalent, within standard deviation, of the dry comb energy measured on tresses treated with the shampoo containing no polymer and the shampoo containing cationic g...

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Abstract

The presently disclosed and / or claimed inventive concept(s) relates generally to the use of nonionic hydrophobically modified polysaccharides in personal care and household care compositions. More specifically, but not by way of limitation, the presently disclosed and / or claimed inventive concept(s) relates to the use of hydrophobically-modified cellulose ethers, such as hydrophobically-modified hydroxyethylcellulose (HMHEC) polymers in personal care and household care compositions. These compositions show pronounced syneresis in aqueous solutions or in the presence of surfactants, including nonionic surfactants and anionic surfactants such as lauryl sulfate (LS) and lauryl ether sulfate (LES). It is also contemplated that the surfactants used in the compositions be sulfate free and / or multi-tailed.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Disclosed and Claimed Inventive Concepts[0002]The presently disclosed and / or claimed inventive concept(s) relates generally to the use of nonionic hydrophobically modified polysaccharides in personal care and household care compositions. More specifically, but not by way of limitation, the presently disclosed and / or claimed inventive concept(s) relates to the use of hydrophobically-modified cellulose ethers, such as hydrophobically-modified hydroxyethylcellulose (HMHEC) polymers in personal care and household care compositions. These compositions show pronounced syneresis in aqueous solutions or in the presence of surfactants, including nonionic surfactants and anionic surfactants such as lauryl sulfate (LS) and lauryl ether sulfate (LES). It is also contemplated that the surfactants used in the compositions be sulfate free and / or multi-tailed.[0003]2. Background[0004]In the prior art, the commonly used approach to deliver a polymer c...

Claims

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Application Information

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IPC IPC(8): A61Q5/02A61K8/73A61Q15/00A61Q19/00A61Q5/12C11D3/22A61Q19/10A61Q17/04
CPCA61Q19/10A61K8/731A61Q15/00A61Q5/02A61Q19/00A61Q17/04A61Q5/12C11D3/225A61Q5/00A61K8/416A61K8/466C11D1/123C11D1/62A61K8/41A61K8/44A61K8/447A61K8/463A61K8/86A61Q11/00A61K8/342A61K8/361A61K8/37A61K8/375A61K8/4946A61K8/63A61K2800/10A61K2800/30A61K2800/49A61K2800/524A61K2800/5422A61K2800/596A61K2800/874C11D3/222C11D17/0013C11D17/0017
Inventor HURKENS, STEPHEN HUGOKROON, GIJSBERTLE-PHAM, THI HONG LAN
Owner HERCULES INC
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