Enhanced Rinse-off Conditioner Compositions with Improved Microcapsule Deposition
Legal Citation
Summary of the Inventive Concept
The present invention relates to enhanced rinse-off conditioner compositions comprising microcapsules with improved deposition efficiency on substrates, providing better conditioning and moisturizing benefits.
Background and Problem Solved
The original patent disclosed rinse-off conditioner compositions comprising microcapsules with an oil-based core and a polymeric shell coated with a cationic polymer. However, these compositions may suffer from limited deposition efficiency of microcapsules on substrates, leading to reduced conditioning and moisturizing benefits. The present inventive concept addresses this limitation by introducing novel microcapsule compositions and methods for improving deposition efficiency, thereby enhancing the overall performance of rinse-off conditioner compositions.
Detailed Description of the Inventive Concept
The enhanced rinse-off conditioner compositions of the present invention comprise core-shell microcapsules with a hydrophobic core and a polymeric shell coated with a cationic polymer, specifically a copolymer of polyquaternium-7 and polyquaternium-11. These microcapsules are combined with up to 3 wt % by weight of a non-ionic surfactant, which improves deposition efficiency on substrates such as hair, skin, or fabric. Additionally, the compositions may include a moisturizing agent selected from the group consisting of glycerin, panthenol, and argania spinosa kernel oil, which enhances the conditioning and moisturizing benefits. A method for improving deposition efficiency of microcapsules on a substrate is also disclosed, comprising preparing a rinse-off conditioner composition according to the present invention and applying it to the substrate.
Novelty and Inventive Step
The present inventive concept introduces novel microcapsule compositions with improved deposition efficiency, achieved through the use of a specific cationic polymer copolymer and a non-ionic surfactant. This combination is not disclosed in the original patent and provides a non-obvious solution to the problem of limited deposition efficiency.
Alternative Embodiments and Variations
Alternative embodiments of the inventive concept may include using different types of cationic polymers or surfactants, varying the concentration of microcapsules and additives, or incorporating additional ingredients such as UV-absorbing agents or fragrances. The inventive concept may also be adapted for use in different rinse-off conditioning applications, such as skin or fabric care.
Potential Commercial Applications and Market
The enhanced rinse-off conditioner compositions of the present invention have significant commercial potential in the personal care industry, particularly in the hair care and skin care segments. The improved deposition efficiency and conditioning benefits of these compositions make them attractive for use in a wide range of products, from shampoos and conditioners to body washes and lotions.
CPC Classifications
| Section | Class | Group |
|---|---|---|
| A | A61 | A61K8/416 |
| A | A61 | A61K8/11 |
| A | A61 | A61K8/31 |
| A | A61 | A61K8/342 |
| A | A61 | A61K8/361 |
| A | A61 | A61K8/737 |
| A | A61 | A61K8/88 |
| A | A61 | A61K8/898 |
| A | A61 | A61K8/922 |
| A | A61 | A61K8/927 |
| A | A61 | A61Q5/02 |
| A | A61 | A61Q5/12 |
| A | A61 | A61Q19/007 |
| A | A61 | A61K2800/33 |
| A | A61 | A61K2800/412 |
| A | A61 | A61K2800/5426 |
| A | A61 | A61K2800/624 |
Section 103 Obviousness Analysis (PHOSITA)
Field of Art
Cosmetic and personal care formulations, specifically rinse-off conditioning compositions with microcapsule technologies, involving polymer chemistry, surfactant science, and topical delivery systems
Person of Ordinary Skill (PHOSITA) Profile
A formulation chemist with expertise in cosmetic science, having advanced degrees in chemistry or chemical engineering, familiar with polymer modifications, surfactant interactions, and microcapsule encapsulation technologies
Obviousness Rationale
A person skilled in the art would recognize that the PTD's variations represent predictable extensions of the source patent's core microcapsule conditioning technology. The disclosed modifications involve routine optimization of known parameters such as polymer composition, surfactant interactions, and additional functional ingredients. These variations would be considered straightforward adaptations within the established technological framework of the original patent.
Obvious Combinations & Variations
Original Patent Information
| Patent Number | US 11,857,659 |
|---|---|
| Title | Rinse-off conditioner compositions comprising microcapsules |
| Assignee(s) | FIRMENICH SA |