Tertiary Amine Dextran Polymer Silicone Deposition
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Solution Overview
Problem
Conventional hair cleansing formulations face inefficiencies in depositing silicones onto hair, leading to high active ingredient requirements that negatively impact foam/lather feel and cost, while also removing desirable hair oils, causing dryness and damage.
Innovation Solution
A hair cleansing formulation incorporating a tertiary amine functionalized dextran polymer as a deposition aid, enhancing the deposition of silicones onto mammalian hair, thereby improving the efficiency of silicone delivery and maintaining hair moisture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional deposition aids (e.g., polyquaternium-10, guar hydroxypropyltriammonium chloride) are used to enhance silicone deposition, then some deposition effect is achieved, but high active ingredient levels are required which detrimentally affect foam/lather feel and cost
Solution Approach 1:
The patent changes the chemical parameters of the deposition aid by using a cationic polymer with specific molecular weight (5,000-200,000) and specific functional groups (amino, hydroxyl, carboxyl, or a combination thereof). This optimization allows effective silicone deposition at lower active ingredient levels, thereby preserving foam/lather quality while maintaining deposition efficiency.
Solution Approach 2:
The patent employs a composite approach by combining the cationic polymer deposition aid with silicone compounds in a balanced formulation. The polymer serves as a carrier that enhances silicone deposition without requiring excessive silicone concentrations, thus maintaining the desirable foam/lather properties of the cleansing formulation.
2Productivity
If cleansing formulations remove oils from hair to facilitate dirt and germ removal, then cleaning effectiveness is improved, but hair becomes vulnerable to dryness and damage
Solution Approach 1:
The cationic polymer acts as an intermediary substance that facilitates the deposition of conditioning agents (silicone) onto hair during the cleansing process. This mediator enables the formulation to provide both cleaning and conditioning benefits simultaneously, protecting hair from dryness and damage while maintaining effective dirt and germ removal.
Solution Approach 2:
The patent modifies the chemical composition parameters of the cleansing formulation by incorporating specific cationic polymers with functional groups that promote silicone deposition. This parameter change allows the formulation to deliver conditioning benefits without compromising the cleaning effectiveness, thus preventing hair dryness and damage.
3Reliability
If high levels of active ingredient (silicone) are incorporated into the formulation to ensure adequate deposition, then deposition effectiveness is improved, but cost and foam/lather feel deteriorate
Solution Approach 1:
The patent optimizes the concentration parameters of the active ingredient by using a highly effective cationic polymer deposition aid. This allows achieving adequate silicone deposition at lower silicone concentrations, thereby reducing formulation cost while maintaining deposition effectiveness and preserving foam/lather feel.
Solution Approach 2:
The cationic polymer serves as an efficient intermediary that enhances silicone deposition at low concentrations. This mediator enables the formulation to achieve effective deposition without requiring high levels of expensive silicone active ingredients, thus reducing cost while maintaining deposition effectiveness.
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 formulation effectively enhances silicone deposition on hair, reducing the need for high active ingredient levels, maintaining hair moisture, and improving the consumer feel of the product without compromising foam/lather quality.
Implementation Method 1
a deposition aid polymer, wherein the deposition aid polymer is a tertiary amine functionalized dextran polymer... wherein the deposition aid polymer enhances deposition of the dermatologically acceptable silicone from the hair cleansing formulation onto mammalian hair
Data Source
AI summary
A hair cleansing formulation is provided, comprising: a dermatologically acceptable vehicle; a dermatologically acceptable hair care cleansing surfactant; a dermatologically acceptable silicone; and a deposition aid polymer, wherein the deposition aid polymer is a tertiary amine functionalized dextran polymer, comprising a branched chain dextran polymer functionalized with tertiary amine groups; wherein the deposition aid polymer enhances deposition of the dermatologically acceptable silicone from the hair cleansing formulation onto mammalian hair.