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Structured aqueous detergent compositions containing salting-out electrolytes and surfactants and methods of forming them

  • US 5,021,195 A
  • Filed: 02/08/1989
  • Issued: 06/04/1991
  • Est. Priority Date: 02/10/1988
  • Status: Expired due to Term
First Claim
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1. A structured aqueous detergent composition containing detergent-active material in the form of at least one detergent-active component and at least one electrolyte and having the following phases:

  • (a) an isotropic aqueous solution forming a continuous phase;

    (b) distributed and suspended in said solution (a) discrete units of one or more non-network-forming phases, each selected from the following;

    (i) solid particles containing detergent-active material,(ii) lyotropic liquid crystals containing detergent-active material; and

    (iii) non-encapsulated liquid droplets containing detergent-active material,(c) one or more suspending phases which cause the composition to be structured so as to suspend the non-network-forming phase (b);

    said non-network-forming phase (b) having a higher concentration by weight of detergent-active material than said aqueous solution (a);

    said composition having a viscosity of less than 2.5 Pas and a shear rate of 21S-1 and, if phase (b)(i) or (b)(ii) is present, the composition giving substantially no clear layer formation upon centrifuging at 800 G at 25°

    C. for 17 hours.

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