High Molecular Weight Esters for Long-Wear Lipstick
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Solution Overview
Problem
Cosmetic formulators have not achieved a gold standard for long-wearing lipsticks that balance comfort, gloss, and transfer resistance, as existing formulations often require a trade-off between these properties.
Innovation Solution
Development of ester compounds with a molecular weight of at least 1,500 daltons, formed from poly-carboxylic acids, mono-alcohols, and poly-alcohols, which provide long wear and transfer resistance while maintaining comfort and slip in personal care products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If long wearing properties are achieved in color cosmetic compositions, then transfer resistance and wear duration are improved, but comfort and shine are sacrificed
Solution Approach 1:
The patent changes the molecular weight parameter of ester compounds to at least 1,500 daltons, which fundamentally alters the performance characteristics of the cosmetic formulation. This parameter change enables the ester to provide long-wear properties while maintaining comfort and slip, resolving the traditional trade-off between wear duration and ease of operation.
Solution Approach 2:
The patent uses composite ester compounds formed from the reaction of poly-carboxylic acids with poly-alcohols and mono-alcohols. This composite structure combines the benefits of different molecular components to achieve both long-wear durability and comfort, allowing the cosmetic formulation to exhibit both improved wear resistance and maintained ease of operation.
2Reliability
If long wearing properties are achieved in color cosmetic compositions, then transfer resistance is improved, but gloss and aesthetic finish are sacrificed
Solution Approach 1:
By changing the molecular weight parameter of the ester compound to at least 1,500 daltons, the patent achieves a formulation that simultaneously provides transfer resistance and maintains gloss. This parameter change allows the cosmetic to form a durable film that still reflects light appropriately for aesthetic finish.
Solution Approach 2:
The composite ester structure formed from poly-carboxylic acids and poly-alcohols creates a material that provides both transfer resistance and gloss. The specific molecular architecture of this composite enables the formulation to maintain aesthetic finish while achieving improved reliability in terms of transfer resistance.
3Duration of action of stationary object
If existing formulations prioritize transfer resistance, then long wear is improved, but slip and comfortable feel are sacrificed
Solution Approach 1:
The patent applies a specific parameter change to the ester molecular weight (at least 1,500 daltons) that enables the formulation to provide both long-wear durability and slip. This molecular weight threshold creates a balance where the ester remains sufficiently mobile to provide slip during application while forming a durable long-wear film.
Data Source
AI summary
The present invention relates to cosmetic and/or personal care formulations and/or compounds. In one embodiment, the present invention relates to ester compounds that can be used in various personal care formulations and/or compounds. In another embodiment, the present invention relates to branced ester compounds having a molecular weight of at least about 1,500 daltons that can be used in various personal care formulations and/or compounds.