Lip Gloss Composition Adhesion Spreadability Balance
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Solution Overview
Problem
Existing lip gloss compositions face challenges in achieving balanced adhesion, spreadability, durability, gloss, storage stability, and skin safety, with most formulations either being too sticky or lacking in adhesion and gloss.
Innovation Solution
A lip gloss composition comprising 20-60 parts of polyglyceryl-2 dimer dilinoleate isostearate and/or hydrogenated polyisobutene, 0.5-1.0 parts of polyamide resin, 1.75-7.0 parts of dextrin ester, 20-55 parts of hydroxy compounds, and 15-40 parts of liquid oil with specific viscosities, optimized to achieve a ratio of 3.5 to 7.0 for (C)/(B), ensuring appropriate adhesion, spreadability, and storage stability while being safe for the skin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If high viscosity and high adhesion hydroxyl compound is used, then adhesion is improved, but spreadability deteriorates
Solution Approach 1:
The patent optimizes the viscosity and adhesion properties by carefully selecting and adjusting the concentration of hydroxyl compounds (diisostearyl malate, polyglyceryl-2 diisostearate, polyglyceryl-2 triisostearate, dipentaerythrityl diisostearate, or dipentaerythrityl trisostearate) within specific ranges (20-55 parts by mass). This parameter optimization allows achieving balanced adhesion and spreadability by controlling the physical properties of the lip gloss composition.
Solution Approach 2:
The patent uses a composite formulation combining multiple ingredients including hydroxyl compounds, liquid oils (15-40 parts by mass), polyamide resins (0.5-1.0 part by mass), and dextrin esters (1.75-7.0 parts by mass). This composite approach allows the synergistic interaction of different materials to achieve both good adhesion and acceptable spreadability, where each component contributes specific properties that balance the overall performance.
2Strength
If polyamide resin amount is increased, then adhesion is improved, but storage stability deteriorates
Solution Approach 1:
The patent specifies a precise range for polyamide resin content (0.5-1.0 part by mass) and establishes a critical ratio relationship between dextrin ester (C) and polyamide resin (B), where (C)/(B) must be 3.5 to 7.0. This parameter control ensures that sufficient polyamide resin is present for adequate adhesion while preventing excessive amounts that would compromise storage stability.
Solution Approach 2:
The dextrin ester acts as an intermediary component that mediates between the polyamide resin and the hydroxyl compounds. By maintaining the specific (C)/(B) ratio of 3.5 to 7.0, the dextrin ester helps balance the adhesive properties of the polyamide resin with the overall composition stability, preventing premature polymerization or phase separation while ensuring adequate adhesion.
3Strength
If liquid oil viscosity is increased, then adhesion is improved, but spreadability deteriorates
Solution Approach 1:
The patent specifies a precise viscosity range for liquid oil (5-400 mPa·s at 25°C) and optimizes its content (15-40 parts by mass). This parameter optimization allows selecting liquid oils with appropriate viscosity to achieve good adhesion while maintaining acceptable spreadability. The specific viscosity range ensures the oil is not too thick to apply smoothly but still provides sufficient adhesion properties.
Data Source
AI summary
The present invention provides a lip gloss composition having appropriate adhesion, spreadability, durability, practical properties such as gloss on the applied surface, storage stability, and safety to skin.A lip gloss composition, comprising (A) 20 to 60 parts by mass of polyglyceryl-2 dimer dilinoleate isostearate and/or hydrogenated polyisobutene; (B) 0.5 to 1.0 part by mass of a polamide resin with an amide terminal group and/or a polyamide resin with an ester terminal group; (C) 1.75 to 7.0 parts by mass of a dextrin ester of an aliphatic: (D) 20 to 55 parts by mass of at least one hydroxy compound selected from the group consisting of diisostearyl malate, polyglyceryl-2 diisostearate polyglyceryl-2 triisostearate, dipentaerythrityl diisostearate and dipentaerylthrityl trisostearate; and (E) 15 to 40 parts by mass of a liquid oil having a viscosity of 5 to 400 mPa·s at 25 degrees C., wherein a total amount of (A) to (E) is 100 parts by mass and the ratio by mass (C)/(B) is 3.5 to 7.0.