HIGH EMOLLIENT LAMELLAR COMPOSITIONS RESISTANT TO VISCOSITY AND PHASE STRUCTURE DETERIORATION AFTER LOW TEMP STORAGE AND/OR FREEZE-THAW CYCLE

• US 20100292117A1
• Filed: 05/13/2009
• Published: 11/18/2010
• Est. Priority Date: 05/13/2009
• Status: Active Grant

• Current Assignee: Conopco (Unilever PLC)
• Original Assignee: Conopco (Unilever PLC)
• Inventors: Patel, Rajesh, Combs, Kathleen, Subramanian, Vivek
• Granted Patent: US 7,879,781 B2
• Time in Patent Office: Days
• US Class Current: 510/130
• CPC Class Codes: A61K 8/0295 Liquid crystals
• CPC Class Codes: A61K 8/31 Hydrocarbons
• CPC Class Codes: A61K 8/342 Alcohols having more than seven atoms in an unbroken chain
• CPC Class Codes: A61K 8/361 Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof
• CPC Class Codes: A61K 8/375 the alcohol moiety containing more than one hydroxy group
• CPC Class Codes: A61K 8/922 of vegetable origin
• CPC Class Codes: A61Q 19/10 Washing or bathing preparations

Abstract

The invention comprises a liquid lamellar composition comprising surfactant, a specific lamellar structuring system, emollient, and specific structurant.

Claims

1. Liquid lamellar composition comprising:

a) 5% to 70% by wt. surfactant;

b) 1.0 to 7% by wt. of lamellar structuring system comprising;

(i) 24% by wt. lauric acid; and

(ii) 0.1-3% by wt. lauryl alcohol

c) 1545% by wt. emollient oil; and

d) 0.25-0.7% by wt. trihydroxystearin as emollient oil structurant;

wherein composition has initial viscosity of >

80,000 cps to 150,000 cps;

wherein composition has viscosity, after freeze thaw testing of ≧

80,000 to 150,000 cps; and

wherein the composition is phase stable after exposure at 50°

C. for ten 10 days.

2. A composition according to claim 1 comprising 2.5 to 5% lamellar structuring system.

3. A composition according to claim 1 comprising 2 to 2.5% lauric acid and 0.1-3% lauryl alcohol.

4. A composition according to claim 1 wherein initial viscosity is 90,000 to 140,000 cps.

5. A composition according to claim 1 wherein charge from control viscosity (measured by 1-day viscosity test) to excess after freeze-thaw viscosity bar is <

50%.