Claims
- 1. A process for making a stable shear-thinning, transparent or translucent liquid laundry detergent composition, the composition comprising:(a) about 0.01 to 5% by wt. of a polymer gum or polymer gums capable of forming stable, non-continuous networks selected from the group of gums consisting of agar, gelatin, rhamsan, gellan and furcellaran wherein said stable, non-continuous network can suspend particles having a size of 300 to 5000 microns; (b) 15 to 85% by wt. of a surfactant; (c) an alkalinity buffer; wherein by shear thinning is meant being able to support particles 300 to 5000 microns in size while having a pour viscosity of about 50 to about 3000 cps measured at 21S−1 at about room temperature; wherein by stable is meant particles do not phase separate for at least 2 weeks when measured at room temperature; wherein said process comprises: (i) mixing about 0.01 to 5% by wt. of a gum premix of said gum polymer or polymers with balance water at a temperature of about room temperature to about 200° F. for at least 30 minutes or until gum is swollen to form a polymer gum premix having concentration about 0.001 to 5% by wt. composition; (ii) promoting formation of gum bits from said premix by agitating the premix and additionally selecting a method selected from the group consisting of addition of counterion, use of temperature differential and mixtures thereof; and (iii) separately preparing a liquid detergent base comprising the surfactant which is subsequently combined with the gum bits formed in step (ii) to form a final detergent composition comprising suspending gum bits.
- 2. A process according to claim 1, wherein the composition has a pour viscosity, measured by shear rate of 21S−1 at room temperature of 100 to 2000 cps.
- 3. A process according to claim 1, wherein at a wavelength of 410-800 nanometers said composition has 50% transmittance of light using a 1 centimeter cuvette wherein said composition is measured free of any dyes.
- 4. A process according to claim 1, wherein the surfactant amount is 20% to 85% by wt.
- 5. A process according to claim 1, wherein the surfactant amount is 21% to 80% by wt.
- 6. A composition according to claim 1, wherein polymer is geletin.
- 7. A process according to claim 1, comprising 0.1 to 10% by wt. particles having size of 300 to 5000 microns.
- 8. A process according to claim 1, wherein the surfactant comprises 5% to 50% by wt. nonionic surfactant.
- 9. A process according to claim 8, wherein the surfactant comprises 10 to 40% by wt. nonionic surfactant.
- 10. A composition according to claim 1, wherein pour viscosity is 150 to 1500 cps at 21S−1.
- 11. A process for making a stable shear-thinning, transparent or translucent liquid laundry detergent composition, the composition comprising:(a) about 0.01 to 5% by wt. of a polymer gum or polymer gums capable of forming stable, non-continuous networks selected from the group of gums consisting of agar, gelatin, rhamsan, gellan and furcellaran wherein said stable, non-continuous network can suspend particles having a size of 300 to 5000 microns; (b) 15 to 85% by wt. of a surfactant; (c) an alkalinity buffer; wherein by shear thinning is meant being able to support particles 300 to 5000 microns in size while having a pour viscosity of about 50 to about 3000 cps measured at 21S−1 at about room temperature; wherein by stable is meant particles do not phase separate for at least 2 weeks when measured at room temperature; wherein said process comprises: (i) mixing about 0.01 to 5% by wt. of a gum premix of said gum polymer or polymers with balance water at a temperature of about room temperature to about 200° F. for at least 30 minutes or until gum is swollen to form a polymer gum premix having concentration about 0.001 to 5% by wt. composition; (ii) contacting a fully formed liquid detergent base or detergent base components comprising the surfactant with gum premix of (i) to form a final detergent composition comprising surfactant polymer bits formed in-situ.
Parent Case Info
This is a continuation of Ser. No. 09/213,047 filed Dec. 16, 1998 now U.S. Pat. No. 6,258,771.
US Referenced Citations (35)
Foreign Referenced Citations (11)
Number |
Date |
Country |
100 125 |
Feb 1984 |
EP |
170 927 |
Feb 1986 |
EP |
258 068 |
Mar 1988 |
EP |
401 413 |
Nov 1933 |
GB |
461 221 |
Feb 1937 |
GB |
1 303 810 |
Jan 1973 |
GB |
1 429 143 |
Mar 1976 |
GB |
1 470 250 |
Apr 1977 |
GB |
154269 |
Jan 1970 |
NL |
9531528 |
Nov 1995 |
WO |
9726315 |
Jul 1997 |
WO |
Non-Patent Literature Citations (1)
Entry |
PCT International Search Report in a PCT application PCT/EP 99/09033. |
Continuations (1)
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Number |
Date |
Country |
Parent |
09/213047 |
Dec 1998 |
US |
Child |
09/723360 |
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US |