Method of making an amino silicone nanoemulsion

Patent metadata

Field	Value
Publication number	US-10182980-B2
Application number	US-201615005107-A
Country	US
Kind code	B2
Filing date	Jan 25, 2016
Priority date	Jan 28, 2015
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

The present invention relates to a method of making an amino silicone nanoemulsions. More specifically, the present invention relates to a method of making an amino silicone nanoemulsions that may be used to protect surfaces from being soiled or wetted.

First claim

What is claimed is:

1. A method of making an amino silicone nanoemulsion comprising the steps of:
a) mixing one or more liquid amino silicone compounds represented by formula (1) below with a solvent to form a mixture of amino silicone and solvent:

where each R is an alkyl group with 1-10 carbon atoms, wherein each R′ is an alkyl group having 1-10 carbon atoms, a phenyl group, a monovalent group represented by formula (2) below, or a monovalent group represented by the formula: —OR 3 , where R 3 is a hydrogen atom or a monovalent hydrocarbon group with 1-10 carbon atoms;
m is a whole number from 50 to 1000,
n is a whole number from 1 to 100,
A is a monovalent group represented by formula (2) below:
—R 1 —(NH—R 2 ) a -NH 2   (2)

where R 1 and R 2 are divalent hydrocarbon groups with 1-10 carbon atoms;
a is a whole number from 0 to 4;

b) mixing said mixture of amino silicone and solvent with surfactant, water, and, optionally, a protonating agent, to form a nanoemulsion;
c) dividing said nanoemulsion into a first nanoemulsion and a second nanoemulsion;
d) mixing said second nanoemulsion with a non-resin crosslinking agent, to form a third nanoemulsion,
i. at a temperature ranging from about 20° C. to about 100° C.;
ii. wherein said non-resin crosslinking agent is represented by formula (3):
R-L n   (3)

wherein n≥2, R is a polyvalent, saturated or unsaturated, substituted or unsubstituted, organic moiety comprising 2-30 carbon atoms, and each L, identical or different, is a functional group capable of reacting with an amino group;

iii. wherein a molar ratio of said non-resin crosslinking agent to said one or more liquid amino silicone compounds in said third nanoemulsion is from about 0.05:1 to about 10:1;

e) mixing said first nanoemulsion with said third nanoemulsion to form said amino silicone nanoemulsion.

2. The method of claim 1 wherein the molar ratio of said non-resin crosslinking agent to said one or more liquid amino silicone compounds in said third nanoemulsion is from about 0.1:1 to about 5:1.

3. The method of claim 1 wherein the molar ratio of said non-resin crosslinking agent to said one or more liquid amino silicone compounds in said third nanoemulsion is from about 0.5:1 to about 3:1.

4. The method of claim 1 further comprising the step of mixing said first nanoemulsion with a non-resin crosslinking agent to form a fifth nanoemulsion:
i. at a temperature ranging from about 20° C. to about 100° C.;
ii. wherein said non-resin crosslinking agent is represented by formula (3):
R-L n   (3)

wherein n≥2, R is a polyvalent, saturated or unsaturated, substituted or unsubstituted, organic moiety comprising 2-30 carbon atoms, and each L, identical or different, is a functional group capable of reacting with an amino group;

iii. wherein the molar ratio of said non-resin crosslinking agent to said one or more liquid amino silicone compounds in said fifth nanoemulsion is from about 0.05:1 to about 10:1

wherein step e) comprises mixing said fifth nanoemulsion with said third nanoemulsion to form said amino silicone nanoemulsion.

5. The method of claim 4 wherein the molar ratio of said non-resin crosslinking agent to said one or more liquid amino silicone compounds in said fifth nanoemulsion is from about 0.1:1 to about 5:1.

6. The method of claim 4 wherein the molar ratio of said non-resin crosslinking agent to said one or more liquid amino silicone compounds in said fifth nanoemulsion is from about 0.5:1 to about 3:1.

7. The method of claim 4 wherein the molar ratio of said non-resin crosslinking agent to said one or more liquid amino silicone compounds in said fifth nanoemulsion is different from the molar ratio of said non-resin crosslinking agent to said one or more liquid amino silicone compounds in said third nanoemulsion.

8. The method according to claim 1 wherein said amino silicone nanoemulsion is substantially free of a silicone resin.

Assignees

• Procter & Gamble

Inventors

• Oh Hiroshi
• Smith Steven Daryl
• Gartstein Vladimir

Classifications

• C11D3/3742

  Nitrogen containing silicones · CPC title

• A61Q5/12

  Preparations containing hair conditioners · CPC title

• A61K2800/49

  Solubiliser, Solubilising system · CPC title

• A61K8/06 Primary

  Emulsions · CPC title

• A61Q5/02

  Preparations for cleaning the hair · CPC title