Mixed Polyglyceryl Polyester Quats Multifunctional Personal Care
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Solution Overview
Problem
Existing polyglyceryl compounds in personal care applications lack multifunctional properties such as conditioning, antistatic, and bacteriostatic effects, requiring additional steps and components like crosslinking diacids for performance, which are not achievable in one-step processes.
Innovation Solution
A two-step process involving the crosslinking of polyglycerin with a diacid followed by reaction with an alkyl quat intermediate to create cationic polymers with balanced hydrophilic and hydrophobic moieties, providing enhanced properties like mildness, conditioning, and bacteriostatic resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing polyglyceryl compounds are used in personal care applications, then basic humectant properties are provided, but multifunctional properties such as conditioning, antistatic, and bacteriostatic effects are lacking
Solution Approach 1:
The patent applies multi-functionality by designing a single polyglyceryl compound that simultaneously provides humectant, conditioning, antistatic, and bacteriostatic properties. The cationic quaternary ammonium groups enable conditioning and antistatic effects, while the specific molecular structure provides inherent bacteriostatic activity, eliminating the need for multiple separate ingredients.
Solution Approach 2:
The invention merges multiple functional groups into one molecule: the polyglyceryl backbone provides humectancy, while attached cationic quaternary ammonium groups provide conditioning and antistatic properties. This consolidation of functions into a single compound reduces the quantity of additional components needed in formulations.
2Reliability
If crosslinking diacid is added to achieve performance enhancement, then conditioning and barrier properties are improved, but the manufacturing process complexity increases due to required two-step reaction
Solution Approach 1:
The patent applies preliminary action by pre-forming the polyglyceryl compound with cationic quaternary ammonium groups and hydrophobic moieties before final formulation. This preliminary structuring ensures the compound possesses all required functional properties (conditioning, antistatic, bacteriostatic) in advance, simplifying the final manufacturing process to a single-step incorporation into personal care products.
3Ease of manufacture
If polyglyceryl compounds are made with crosslinking diacid in one step, then manufacturing simplicity is improved, but the ester group functionality needed for performance is not achieved
Solution Approach 1:
The patent applies parameter changes by carefully controlling the molecular weight, degree of substitution, and structure of the polyglyceryl backbone to achieve optimal performance. By adjusting these parameters, the compound attains the necessary ester group functionality and overall performance characteristics without requiring complex crosslinking diacid reactions, thus maintaining manufacturing simplicity while ensuring functional precision.
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 resulting polymers exhibit improved moisture retention, foaming, viscosity, and mildness, while being bacteriostatic and suitable for use in shampoos, body washes, and conditioners, offering fine-tuned properties for skin and hair care.
Implementation Method 1
polyglycerin is crosslinked with a diacid. This process called esterification is carried out at high temperature without a solvent
Implementation Method 2
Water is the by product and is efficiently stripped off
Implementation Method 3
in a the intermediate of step one is reacted with and an alkyl quat intermediate in water to produce the desired cationic polymers
Data Source
AI summary
The present invention is directed to a class of mixed polyglyceryl polyester quats that provide multifunctional benefit in personal care applications, including but not limited to (1) conditioning, (2) antistatic properties, (3) bacteriostatic properties and (4) exceptional mildness to skin and eyes. The products are made by the reaction reacting some on the many hydroxyl groups present on polyglycerin with (1) with fatty acids, then (2) diacids then reacted with epoxy cationic compounds to make film forming cationic polymers that are bacteriostatic and of interest in inhibiting biofilm formation on environmental surfaces.