Vinylpyrrolidone-Vinyl Acate Copolymer Perfume Persistence
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Solution Overview
Problem
Perfume compositions face challenges in maintaining the persistence and fidelity of their olfactory notes over time without altering their color, transparency, or leaving sticky residues, especially when applied to skin or hair, due to the limitations of existing additives that can affect stability and sprayability.
Innovation Solution
Incorporating a copolymer of vinylpyrrolidone and vinyl acetate, which enhances the persistence of the olfactory notes while maintaining the original scent and ensuring the composition remains sprayable and non-sticky, thereby prolonging the perception of the perfume without compromising its olfactory identity or physical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If fixatives or evaporation modifiers are incorporated to increase persistence of olfactory notes, then the duration of perfume perception is improved, but the organoleptic properties are modified and transparency is reduced
Solution Approach 1:
The patent changes the chemical parameters by using a specific copolymer composition (vinylpyrrolidone-vinyl acetate) with controlled molecular weight and specific ratio, achieving persistence enhancement while maintaining transparency through precise parameter control
Solution Approach 2:
The patent employs a composite polymer material combining vinylpyrrolidone and vinyl acetate in specific ratios to achieve synergistic effects that provide both persistence and transparency, resolving the contradiction through material composition optimization
2Duration of action of stationary object
If fixatives are incorporated to prolong odor perception, then the persistence is improved, but sticky residues are left on skin
Solution Approach 1:
The patent modifies the physical parameters of the fixative by selecting a copolymer with specific molecular weight range and composition ratio, achieving persistence enhancement while maintaining skin-friendly non-sticky properties through parameter optimization
3Duration of action of stationary object
If additives are incorporated to enhance persistence, then the duration of perfume note is improved, but sprayability is reduced
Solution Approach 1:
The patent optimizes the molecular weight and composition parameters of the copolymer to achieve the right balance between persistence enhancement and sprayability maintenance, using parameter control to resolve the contradiction
4Duration of action of stationary object
If compounds are incorporated to delay evaporation and increase persistence, then the duration of odor perception is improved, but the original scent is modified
Solution Approach 1:
The patent uses a copolymer with specific composition ratio and molecular characteristics that provide persistence enhancement while maintaining olfactory fidelity through careful parameter selection and control
Data Source
AI summary
The present invention relates to a perfuming eau de toilette or eau de parfum composition comprising a high proportion of alcohol, for direct application on the skin or hair by spraying. More specifically, it relates to a sprayable perfume composition having excellent properties such as persistence of the olfactory note once applied on the skin. The composition is transparent and contains ethanol, 0 to 30% by weight of water, 3 to 40% by weight of a perfume concentrate and a copolymer of vinylpyrrolidone and vinyl acetate.