Processes for making liquid detergent compositions comprising a liquid crystalline phase

Patent metadata

Field	Value
Publication number	US-10640738-B2
Application number	US-201615187814-A
Country	US
Kind code	B2
Filing date	Jun 21, 2016
Priority date	Jun 22, 2015
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

Processes for making stable, structured, liquid detergent compositions, such as liquid laundry detergent compositions, having a high fraction of liquid crystalline phase. Related base mixes and laundry detergent compositions.

First claim

What is claimed is:

1. A process for making a detergent composition comprising the steps of:
a) providing a isotropic base mix, wherein the base mix comprises:
i. greater than about 15 wt % of surfactant, the surfactant comprising an anionic surfactant selected from the group consisting of alkyl sulphates, alkyl ethoxy sulphates, alkyl sulphonates, alkyl benzene sulphonates, fatty acid salts, and mixtures thereof, and
ii. 0.1 wt % to 1.2 wt % of a non-surfactant salts;
iii. between 1 wt % to 7 wt % of fatty acid;
iv. a hydrotrope, wherein the hydrotrope is selected from the group consisting of sodium xylene sulfonate, potassium xylene sulfonate, ammonium xylene sulfonate, sodium toluene sulfonate, potassium toluene sulfonate, ammonium toluene sulfonate, sodium cumene sulfonate, potassium cumene sulfonate, ammonium cumene sulfonate, a mixtures thereof;

b) adding non-surfactant salt to the isotropic base mix such that a resultant liquid detergent composition comprises at least about 15% of a liquid crystalline phase,
the non-surfactant salt being selected from the group consisting of salts of ethylenediaminetetraacetic acid (EDTA), salts of diethylene triamine pentaacetic acid (DTPA), salts of hydroxyethane diphosphonic acid (HEDP), salts of diethylene triamine penta methylene phosphonic acid, and mixtures thereof; wherein
the resultant liquid detergent composition further comprises from 12% to 30%, by weight of the liquid detergent composition, of surfactant.

2. The process according to claim 1 , wherein the non-surfactant salt added to the isotropic base mix in step (b) is added to provide a level of at least about 1.5 wt % of non-surfactant salt in the liquid detergent composition.

3. The process according to claim 1 , wherein the surfactant in the base mix of step (a) further comprises nonionic surfactant.

4. The process according to claim 1 , wherein the base mix comprises less than about 15% by volume of liquid crystalline phase.

5. The process according to claim 1 , further comprising:
c) adding an external structurant selected from the group consisting of: non-polymeric crystalline, hydroxyl functional structurants; microfibrillated cellulose; uncharged hydroxyethyl cellulose; uncharged hydrophobically modified hydroxyethyl cellulose; hydrophobically modified ethoxylated urethanes; hydrophobically modified non-ionic polyols; and mixtures thereof.

Assignees

• Procter & Gamble

Inventors

• Thooft Serge Omer Alfons Jean
• Uyttersprot Jan-Sebastiaan

Classifications

• C11D3/044

  Hydroxides or bases · CPC title

• C11D1/83

  Mixtures of non-ionic with anionic compounds · CPC title

• C11D3/382

  Vegetable products, e.g. soya meal, wood flour, sawdust · CPC title

• C11D1/02

  Anionic compounds {(C11D1/002, C11D1/004, C11D1/008 take precedence)} · CPC title

• C11D17/0026 Primary

  Structured liquid compositions, e.g. liquid crystalline phases or network containing non-Newtonian phase · CPC title