Silicone-Pullulan Lip Compositions for Long Wear and Transfer Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Cosmetic compositions, particularly pigmented products like foundations and lipsticks, lack long-wear, transfer-resistance, and application properties, often requiring constant reapplication and maintenance.
Innovation Solution
A composition comprising a copolymer with silicone resin and fluid silicone segments, a hydrophobically-modified pullulan compound, and a T-modified silicone resin, in specific weight ratios, to form a film that enhances long-wear and transfer-resistance properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If silicon resins such as MQ resins are used to provide good long wear properties and transfer-resistance, then long-wear and transfer-resistance are improved, but application properties and feel upon application deteriorate (feels rough)
Solution Approach 1:
The patent uses a composite film-forming system comprising three components: (A) copolymer containing silicone resin segment and fluid silicone segment, (B) hydrophobically-modified pullulan compound, and (C) T-modified silicone resin. This composite approach combines the long-wear benefits of silicone resins with the smooth application properties of copolymers and modified pullulan, resolving the contradiction between durability and ease of application.
Solution Approach 2:
Different components of the film-forming system provide different local functions: component (A) provides flexibility and smooth application, component (B) enhances water-resistance and film integrity, and component (C) provides transfer-resistance. The synergistic combination allows each component to address specific aspects of the contradiction without compromising overall performance.
2Reliability
If silicon resins are used to achieve good long wear properties, then transfer-resistance is improved, but application properties deteriorate (requires separate topcoat composition)
Solution Approach 1:
The patent merges multiple functions into a single composition by incorporating three film-forming components that collectively provide long-wear, transfer-resistance, and good application properties. This eliminates the need for separate topcoat compositions, reducing overall system complexity while maintaining reliable transfer-resistance.
Solution Approach 2:
The composite film-forming system performs multiple functions simultaneously: component (A) ensures smooth application and flexibility, component (B) provides water-resistance and film stability, and component (C) delivers transfer-resistance. This multi-functional approach allows a single composition to replace multiple separate products.
3Duration of action of stationary object
If conventional compositions are used to provide long-wear properties, then transfer-resistance is improved, but comfort properties deteriorate
Solution Approach 1:
The patent modifies the chemical structure and properties of the film-forming components to achieve optimal balance. Specifically, T-modification of silicone resin and hydrophobic modification of pullulan alter the physical and chemical parameters to provide both long-wear durability and comfortable feel, resolving the contradiction between duration and comfort.
Data Source
AI summary
Compositions including (A) at least one copolymer containing a silicone resin segment and at least one fluid silicone segment, (B) at least one hydrophobically-modified pullulan compound and (C) at least one T-modified silicone resin, are provided. Methods of making up the lips are also provided.