Detergent liquid processing

• US 5,002,688 A
• Filed: 03/30/1990
• Issued: 03/26/1991
• Est. Priority Date: 05/11/1987
• Status: Expired due to Fees

• Current Assignee: Lever Brothers Company, Division Of Conopco, Inc.
• Original Assignee: Lever Brothers Company, Division Of Conopco, Inc.
• Inventors: Green, Robin J., Van De Pas, Johannes C.
• Primary Examiner(s): Lieberman, Paul
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US07/506,488
• Time in Patent Office: 361 Days
• Field of Search: 252/8.6, 252/8.7, 252/131, 252/160, 252/135, 252/173, 252/174.25
• US Class Current: 510/328
• CPC Class Codes: C11D 3/1266 in liquid compositions

Abstract

Aqueous liquid detergent compositions containing fabric softening clay material are prepared without an unacceptable viscosity rise occurring either before, during or after incorporation of the clay, by the steps of:

(i) admixture with an aqueous base, of detergent active material and electrolyte, in quantities sufficient to form a low-viscosity system, comprising an active structured lamellar phase dispersed in an aqueous phase; and

(ii) subsequently admixing therewith, the fabric softening clay material;

some electrolyte also being pre-mixed dry with the clay.

Claims

1. A process for preparing an aqueous liquid detergent composition, comprising the steps of:

(i) admixing with an aqueous base, of detergent active material and electrolyte, in quantities sufficient to form a low-viscosity system, comprising an active structured lamellar phase dispersed in an aqueous phase; and

(ii) subsequently admixing therewith, a fabric softening clay material;

wherein from 0.5 to 20l% by weight of the total electrolyte in the final composition is pre-mixed dry with the clay material.

2. A process according to claim 1, wherein the clay is a low-swelling clay having a swellability in an 8% sodium tripolyphosphate solution of less than 25%.

3. A process according to claim 1, wherein the electrolyte in the final composition comprises a builder salt.

4. A process according to claim 1 wherein the electrolyte in the final composition comprises a non-peptising/non-building electrolyte.