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Benefit agent containing delivery particle

a technology of delivery particles and benefit agents, which is applied in the directions of transportation and packaging, detergent compounding agents, waxes, etc., can solve the problems of difficult to improve the delivery efficiency of benefit agents, high cost and/or general less effective use of benefit agents in high-level consumer products

Inactive Publication Date: 2008-12-11
THE PROCTER & GAMBLE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Benefit agents, such as perfumes, silicones, waxes, flavors, vitamins and fabric softening agents, are expensive and / or generally less effective when employed at high levels in consumer products, for example, personal care compositions, cleaning compositions, and fabric care compositions.
Unfortunately, it is difficult to improve the delivery efficiencies of benefit agents as such agents may be lost do to the agents' physical or chemical characteristics, or such agents may be incompatible with other compositional components or the situs that is treated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

84wt % Core / 16wt % Wall Melamine Formaldehyde (MF) Capsule

[0241]25 grams of butyl acrylate-acrylic acid copolymer emulsifier (Colloid C351, 25% solids, pka 4.5-4.7, (Kemira Chemicals, Inc. Kennesaw, Ga. U.S.A.) is dissolved and mixed in 200 grams deionized water. The pH of the solution is adjusted to pH of 4.0 with sodium hydroxide solution. 8 grams of partially methylated methylol melamine resin (Cymel 385, 80% solids, (Cytec Industries West Paterson, N.J., U.S.A.)) is added to the emulsifier solution. 200 grams of perfume oil is added to the previous mixture under mechanical agitation and the temperature is raised to 50° C. After mixing at higher speed until a stable emulsion is obtained, the second solution and 4 grams of sodium sulfate salt are added to the emulsion. This second solution contains 10 grams of butyl acrylate-acrylic acid copolymer emulsifier (Colloid C351, 25% solids, pka 4.5-4.7, Kemira), 120 grams of distilled water, sodium hydroxide solution to adjust pH to 4.8...

example 2

80wt % Core / 20 wt % Wall Melamine Formaldehyde Capsule

[0242]18 grams of a blend of 50% butyl acrylate-acrylic acid copolymer emulsifier (Colloid C351, 25% solids, pka 4.5-4.7, Kemira) and 50% polyacrylic acid (35% solids, pKa 1.5-2.5, Aldrich) is dissolved and mixed in 200 grams deionized water. The pH of the solution is adjusted to pH of 3.5 with sodium hydroxide solution. 6.5 grams of partially methylated methylol melamine resin (Cymel 385, 80% solids Cytec) is added to the emulsifier solution. 200 grams of perfume oil is added to the previous mixture under mechanical agitation and the temperature is raised to 60° C. After mixing at higher speed until a stable emulsion is obtained, the second solution and 3.5 grams of sodium sulfate salt are poured into the emulsion. This second solution contains 10 grams of butyl acrylate-acrylic acid copolymer emulsifier (Colloid C351, 25% solids, pka 4.5-4.7, Kemira), 120 grams of distilled water, sodium hydroxide solution to adjust pH to 4.6, ...

example 3

80 wt % Core / 20 wt % Melamine Formaldehyde Wall Capsule

[0243]36 grams of butyl acrylate-acrylic acid copolymer emulsifier (Colloid C351, 25% solids, pKa 4.5-4.7, Kemira) is dissolved and mixed in 200 grams deionized water. The pH of the solution is adjusted to pH of 5.0 with sodium hydroxide solution. 12 grams of partially methylated methylol melamine resin (Cymel 385, 80% solids, Cytec) is added to the emulsifier solution. 200 grams of perfume oil is added to the previous mixture under mechanical agitation and the temperature is raised to 65° C. After mixing at higher speed until a stable emulsion is obtained, the second solution and 5 grams of sodium sulfate salt are added to the emulsion. This second solution contains 12 grams of butyl acrylate-acrylic acid copolymer emulsifier (Colloid C351, 25% solids, pKa 4.5-4.7, Kemira), 120 grams of distilled water, sodium hydroxide solution to adjust pH to 5, 33 grams of partially methylated methylol melamine resin (Cymel 385, 80% solids, ...

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Abstract

The present invention relates to benefit agent containing delivery particles, compositions comprising said particles, and processes for making and using the aforementioned particles and compositions. When employed in compositions, for example, cleaning or fabric care compositions, such particles increase the efficiency of benefit agent delivery, there by allowing reduced amounts of benefit agents to be employed. In addition to allowing the amount of benefit agent to be reduced, such particles allow a broad range of benefit agents to be employed.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS[0001]This application claims priority under 35 U.S.C. §119(e) to U.S. Provisional Application Ser. No. 60 / 934,071 filed Jun. 11, 2007.FIELD OF INVENTION[0002]The present application relates to benefit agent containing delivery particles, compositions comprising such particles, and processes for making and using such particles and compositions.BACKGROUND OF THE INVENTION[0003]Benefit agents, such as perfumes, silicones, waxes, flavors, vitamins and fabric softening agents, are expensive and / or generally less effective when employed at high levels in consumer products, for example, personal care compositions, cleaning compositions, and fabric care compositions. As a result, there is a desire to maximize the effectiveness of such benefit agents. One method of achieving such objective is to improve the delivery efficiencies of such benefit agents. Unfortunately, it is difficult to improve the delivery efficiencies of benefit agents as such agents...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C11D17/00C11D3/50
CPCA61K8/11A61K2800/412A61Q19/10D06M23/12C11D3/505C11D17/0039D06M13/005B01J13/02A61P29/00Y10T428/2987
Inventor SMETS, JOHANDIHORA, JITEN ODHAVJIPINTENS, ANGUINEBRETIERE, SANDRA JACQUELINEDRUCKREY, ADAM KEITHSANDS, PEGGY DOROTHY
Owner THE PROCTER & GAMBLE COMPANY
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