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US 6,395,690 B1Granted
Process for making mild moisturizing liquids containing large oil droplet
AssigneeUnilever Home & Personal Care USA, Division of Conopco, Inc.
InventorLiang Sheng Tsaur
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Abstract
The invention provides a process for making cleansing compositions having desirable moisturization properties by preparing structured liquid base, separately mixing oil and optional polymer to form mixture, mixing or injecting this mixture into the structured base and passing resulting composition through screen with openings larger than 30 micrometer.
Claims5
A process for making a personal cleansing composition having desirable moisturization properties wherein said process comprises:
- (1) preparing a structured liquid cleanser, containing 5 to 35% by wt. of a surfactant composition and having a viscosity higher than 200 stokes measured at 0.1 S−1 at 30° C.;
- (2) separately mixing oil and optionally polymer to form oil or oil/polymer mixture with viscosity higher than 3,000 centistokes at 30° C. at 1.0 S−1;
- (3) mixing or injecting 1 to 30% by wt. of oil or oil/polymer blend into 70 to 99% by wt. of said structured liquid cleanser to form oil or oil/polymer droplets having size larger than 100 micrometers;
- and
- (4) passing the composition of step 3 through a screen having opening larger than 30 micrometers to make the final products;
- wherein size of particle in step (3) is larger than size of opening of screen used in step (4), wherein said structure liquid can suspend 20 micron oil droplets without phase separation at room temperature for over 3 months.
3 more elements
Dependencies are inferred from the claim text.