Process of making a liquid cleaning composition

Patent metadata

Field	Value
Publication number	US-9758745-B2
Application number	US-201414461648-A
Country	US
Kind code	B2
Filing date	Aug 18, 2014
Priority date	Sep 9, 2013
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

In a process of making a liquid cleaning composition, adding a gel breaker upstream of an anionic surfactant addition in the recirculatory loop of a recirculatory batch processor mitigates the viscous hexagonal phase whilst providing maximum flexibility in formulating various ingredients in the composition.

First claim

What is claimed is:

1. A process of making a liquid cleaning composition, comprising the steps of:
a) providing a recirculatory batch processor,
wherein said recirculatory batch processor comprises: i) a batch container containing a liquid composition precursor; and ii) a recirculatory loop in fluid communication with said batch container, recirculating at least a portion of said liquid composition precursor;

b) dispensing a first anionic surfactant into said loop at a first loop location while at least a portion of said liquid composition precursor is recirculating,
wherein said first anionic surfactant is alkyl ethoxy sulfate (AES),
wherein said first anionic surfactant is contained in a first anionic surfactant composition before dispensing and present from about 60% to about 90% by weight of said first anionic surfactant composition; and

c) dispensing a gel breaker into said loop at a second loop location while at least a portion of said liquid composition precursor is recirculating, wherein said second loop location is upstream of said first loop location,
wherein said gel breaker is a second anionic surfactant, wherein said second anionic surfactant is linear alkylbenzene sulfonate (LAS) characterized by not exhibiting a hexagonal phase upon dilution, and is present in an amount from 50% to about 100% by weight of the LAS composition, wherein the dispensing said AES into said loop is at a first rate, and the dispensing said LAS into said loop is at a second rate, wherein the ratio of said first rate to said second rate is from 0.4:1 to about 8:1, and wherein the liquid cleaning composition is made having from about 5% to about 28% of said AES by weight of the liquid cleaning composition.

2. The process according to claim 1 , wherein said first anionic surfactant has a temperature of about 30° C. to about 50° C. before dispensing.

3. The process according to claim 1 , wherein a first mixer is positioned downstream of said first loop location but proximate thereto in said loop, wherein said first mixer is a dynamic mixer.

4. The process according to claim 3 , wherein said liquid composition precursor passes through said first mixer with residence time of from about 0.001 to about 100 seconds per recirculation pass, imparted with an energy density of from about 10 to about 100000 kJ/m 3 .

5. The process according to claim 4 , wherein said liquid composition precursor passes through said first mixer with residence time of from about 0.01 to about 30 seconds per recirculation pass, imparted with an energy density of from about 100 to about 10000 kJ/m 3 , and said liquid composition precursor in said batch container is imparted with an energy density of from about 10 to about 500 kJ/m 3 with residence time of from about 10 to about 30 minutes.

6. The process according to claim 1 , wherein said first anionic surfactant is dispensed into said loop via a concentric injection.

7. The process according to claim 1 , wherein the liquid composition is made having from about 5% to about 25% of said first anionic surfactant by weight of the liquid cleaning composition.

8. The process according to claim 1 , wherein said liquid composition precursor recirculating in said loop has a viscosity of about 0.01 to about 10 Pa-s at a shear rate of 10/sec and a temperature of 30° C.

9. The process according to claim 1 , further comprising step d): dispensing a third loop component into said loop at a third loop location, wherein said third loop component is selected from the group consisting of fatty acid, nonionic surfactant, cationic surfactant, perfume microcapsule, silicone, and a combination thereof, wherein said third loop location is downstream of said first loop location.

10. The process according to claim 1 , further comprising step e): adding a batch component into said batch container, wherein said batch component is selected from the group consisting of water, solvent, builder, chelant, preservative, cationic surfactant, nonionic surfactant, pH modifier, perfume oil, dye, enzyme, and a combination thereof.

Assignees

• Procter & Gamble

Inventors

• Gu Chong
• Guida Vincenzo
• Wise Geoffrey Marc
• Dai Wei
• Durham Bernie George
• Ng Boon Ho
• Hu Fang

Classifications

• C11D1/22

  derived from aromatic compounds · CPC title

• C11D1/37

  Mixtures of compounds all of which are anionic · CPC title

• C11D1/146 Primary

  Sulfuric acid esters · CPC title

• C11D11/0094

  Process for making liquid detergent compositions, e.g. slurries, pastes or gels · CPC title

• C11D1/29

  Sulfates of polyoxyalkylene ethers · CPC title