Cleansing bars with phenoxyethanol

Patent metadata

Field	Value
Publication number	US-10407648-B2
Application number	US-201415533074-A
Country	US
Kind code	B2
Filing date	Dec 5, 2014
Priority date	Dec 5, 2014
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

A cleansing bar composition comprising at least one cleanser chosen from soap and surfactant; phenoxyethanol; and one or more hydrophobic stabilizing agents, wherein the composition is a solid cleansing bar. Also methods of enhancing the deposition of phenoxyethanol by a cleansing bar comprising the step of pre-mixing phenoxyethanol with one or more hydrophobic deposition aids during manufacturing of the cleansing bar.

First claim

What is claimed is:

1. A cleansing bar composition comprising:
a) at least one cleanser chosen from soap and surfactant;
b) phenoxyethanol; and
c) one or more hydrophobic deposition aids,
wherein the phenoxyethanol is coated by the hydrophobic deposition aid by premixing the phenoxyethanol with the hydrophobic deposition aid, wherein the composition is a solid cleansing bar,
wherein the hydrophobic deposition aid comprises at least one material chosen from a material having a water solubility less than 1% by weight, petrolatum, white petrolatum, snow white petrolatum, a vegetable oil, palm oil, palm kernel oil, coconut oil, a seed oil, jojoba oil, jojoba wax, a fat, triglyceride, tallow, shea butter, a glycerol ester of a C8-C22 fatty acid; a glycerol ester of lauric, palmitic, stearic, oleic, linoleic or myristic acid; a C8-C22 fatty alcohol, lauryl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, cetyl alcohol or myristyl alcohol, a C8-22 fatty acid, lauric acid, palmitic acid, stearic acid, oleic acid, linoleic acid or myristic acid, a silicone, or a mineral oil, and
wherein the composition exhibits at least 11% Deposition Improvement (D.I.), wherein said D.I. is calculated as (PE=phenoxyethanol, and control=water):

D
.
I
.

=

(

PE
⁢

⁢
content
⁢

⁢
with
⁢

⁢
deposition
⁢

⁢
aid

)

-

(

PE
⁢

⁢
content
⁢

⁢
of
⁢

⁢
control

)

(

PE
⁢

⁢
content
⁢

⁢
of
⁢

⁢
control

)

×
100
⁢

%
.

2. The composition of claim 1 , wherein the phenoxyethanol is present in an amount of 0.01% to 2% by weight of the composition.

3. The composition of claim 1 , wherein the hydrophobic deposition aid comprises 0.1% to 10% by weight of the composition.

4. The composition of claim 1 , wherein the weight ratio of phenoxyethanol to hydrophobic deposition aid is 1:0.25 to 1:5.

5. The composition of claim 1 , wherein the weight ratio of phenoxyethanol to hydrophobic deposition aid is 1:1 to 1:2.

6. The composition of claim 1 , wherein the at least one cleanser comprises a soap.

7. The composition of claim 1 further comprising an emulsifier having an HLB of 1 to 4.

8. The composition of claim 7 , wherein the emulsifier is steareth-2.

9. A method of increasing phenoxyethanol deposition by a cleansing bar comprising:
a) combining phenoxyethanol in a hydrophobic deposition aid to form a mixture, and coating the phenoxyethanol with the hydrophobic deposition aid by pre-mixing the phenoxyethanol with the hydrophobic deposition aid;
b) adding the mixture to at least one cleanser chosen from soap and surfactant; and
c) forming a cleansing bar;
wherein the hydrophobic deposition aid comprises at least one material chosen from a material having a water solubility less than 1% by weight, petrolatum, white petrolatum, snow white petrolatum, a vegetable oil, palm oil, palm kernel oil, coconut oil, a seed oil, jojoba oil, jojoba wax, a fat, triglyceride, tallow, shea butter, a glycerol ester of a C8-C22 fatty acid; a glycerol ester of lauric, palmitic, stearic, oleic, linoleic or myristic acid; a C8-C22 fatty alcohol, lauryl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, cetyl alcohol or myristyl alcohol, a C8-22 fatty acid, lauric acid, palmitic acid, stearic acid, oleic acid, linoleic acid or myristic acid a silicone or a mineral oil.

10. The method of claim 9 , wherein combining the phenoxyethanol and the hydrophobic deposition aid comprises adding an emulsifier having an HLB of 1 to 4.

11. The method of claim 10 , wherein the emulsifier is steareth-2.

12. The method of claim 9 , wherein the phenoxyethanol is present in an amount of 0.01% to 2% by weight of the composition.

13. The method of claim 9 , wherein the hydrophobic deposition aid comprises 0.1% to 10% by weight of the composition.

14. The method of claim 9 , wherein the weight ratio of phenoxyethanol to hydrophobic deposition aid is 1:0.25 to 1:5.

15. The method of claim 9 , wherein the at least one cleanser comprises a soap.

16. The method of claim 9 , wherein the hydrophobic deposition aid enhances the deposition of phenoxyethanol on the skin of the user of the cleansing bar, and wherein the hydrophobic deposition aid results in measurable phenoxyethanol on the skin of the user 24 hours after use of the cleansing bar.

Assignees

• Colgate Palmolive Co

Inventors

• Mastrull Jeffrey
• Dubovoy Viktor
• Du-Thumm Laurence
• Misner Steven
• Santos David
• Pan Long

Classifications

• C11D10/04

  based on mixtures of surface-active non-soap compounds and soap · CPC title

• C11D9/267

  containing free fatty acids · CPC title

• C11D9/26

  containing oxygen {(C11D9/225 takes precedence)} · CPC title

• C11D9/24

  Hydrocarbons {(C11D9/225 takes precedence)} · CPC title

• C11D3/373

  containing silicones · CPC title