Betaine Ester Triggerable Composition for Controlled Release
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Functionally active chemicals in personal care and beauty products are unstable under environmental conditions, leading to short shelf lives, packaging challenges, and inefficient release mechanisms, which limits their adoption and efficacy.
Innovation Solution
A two-stage triggerable composition using betaine esters and stimuli-sensitive encapsulation polymers to stabilize and control the release of active chemicals, where betaine esters are converted into a nonvolatile form and released through hydrolysis upon exposure to an aqueous medium, triggered by environmental stimuli such as pH changes or enzymatic activity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If active chemicals are used in personal care products, then functional efficacy is improved, but stability under environmental conditions deteriorates
Solution Approach 1:
The active chemical is nested within a betaine ester molecule, which is subsequently encapsulated within a polymer matrix. This nested structure provides multiple layers of protection: the betaine ester protects the active from environmental degradation, while the polymer capsule provides additional stabilization during storage and transport, resolving the contradiction between maintaining functional efficacy and ensuring environmental stability.
Solution Approach 2:
The betaine ester acts as an intermediary between the active chemical and the external environment. It serves as a protected carrier that can be stored stably but releases the active when triggered by specific stimuli (pH change, enzymes, or aqueous exposure), thus maintaining both stability during storage and functional efficacy when needed.
2Reliability
If active chemicals are released immediately, then functional efficacy is improved, but shelf life deteriorates
Solution Approach 1:
The active chemical is converted into a betaine ester form in advance, which is inherently more stable and non-volatile. This preliminary transformation allows the product to be stored for extended periods without degradation, while the betaine ester remains primed to release the active chemical when exposed to triggering stimuli during use.
Solution Approach 2:
The invention changes the chemical parameter of the active from a volatile, unstable form to a non-volatile, stable betaine ester form. This parameter change enables long-term storage stability while preserving the ability to release the active chemical functionality when triggered by environmental conditions such as pH change, enzymatic activity, or aqueous exposure.
3Stability of the object's composition
If encapsulation is used to stabilize actives, then stability is improved, but controlled release capability deteriorates
Solution Approach 1:
The polymer capsule and betaine ester system transitions from a static, stable state during storage to a dynamic, responsive state when triggered. The capsule remains intact and protective under normal conditions, but undergoes structural changes when exposed to triggering stimuli (pH change, enzymes, or aqueous exposure), enabling controlled release of the active chemical at the desired time and location.
Solution Approach 2:
The system is designed to automatically respond to environmental triggers without external intervention. When the product encounters specific conditions (such as skin pH, enzymatic environments, or aqueous exposure), the betaine ester self-hydrolyzes and the polymer capsule self-dissolves or opens, releasing the active chemical in a controlled manner that serves the product's function autonomously.
4Ease of operation
If betaine esters are used for fragrance release, then controlled release is improved, but stability in acidic environments deteriorates
Solution Approach 1:
The polymer capsule provides beforehand protection for the betaine ester against acidic degradation. The capsule acts as a cushioning barrier that protects the betaine ester from premature hydrolysis in acidic environments during storage and application, while still allowing the betaine ester to perform its controlled release function when triggered by appropriate stimuli such as neutral pH, enzymatic activity, or aqueous exposure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composition provides long-term stability and controlled release of active chemicals, enhancing the shelf life and efficacy of products while minimizing side effects and packaging requirements.
Implementation Method 1
a betaine ester or betaine ester derivative of a functional active that releases the functional active through a hydrolysis reaction upon contact with an aqueous medium
Implementation Method 2
an encapsulation material for encapsulating the betaine ester or betaine ester derivative including a functional active, the encapsulation material triggerable to release the betaine ester or betaine ester derivative upon the occurrence of an environmental stimulus
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A triggerable composition for two-stage, controlled release of a functional active chemical includes an ecapsulation material for encapsulating a betaine ester or betaine ester derivative including a functional active. The encapsulation material is triggerable to release the betaine ester or betaine ester derivative at a first stage upon the occurrence with an environmental stimulus, such as a pH change, an enzymatic change, and a temperature change. The betaine ester or betaine ester derivative of a functional active with at least one hydroxyl group releases the functional active through a hydrolysis reaction upon contact with an aqueous medium.