Crosslinked Dextran Hair Conditioner for Silicone-Free Conditioning
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Solution Overview
Problem
There is a need for silicone-free hair conditioning agents that provide effective conditioning benefits and have a higher natural origin index, while addressing concerns about the persistence and potential toxicity of silicone-based conditioning agents in conventional hair conditioners.
Innovation Solution
A hair conditioner formulation using a dextran polymer crosslinked with a dextran crosslinking agent, which contains less than 0.01 wt% of dermatologically acceptable oil and less than 0.1 wt% of silicon-containing molecules, to enhance deposition of conditioning agents on mammalian hair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If silicone-based conditioning agents are used, then effective conditioning benefits are provided, but environmental persistence and potential toxicity increase
Solution Approach 1:
The patent changes the chemical composition parameters by replacing silicone-based conditioning agents with dextran polymer crosslinked with a dextran crosslinking agent. This substitution maintains conditioning effectiveness while eliminating the environmental persistence and toxicity associated with silicones, directly resolving the technical contradiction between reliability and harmful factors.
Solution Approach 2:
The patent employs a composite material system consisting of dextran polymer crosslinked with a dextran crosslinking agent of formula (I). This composite structure provides conditioning benefits comparable to silicones while being environmentally friendly, as the dextran-based composite replaces the harmful silicone materials without sacrificing performance.
2Quantity of substance
If silicone-free alternatives are developed, then natural origin index increases, but conditioning performance may be compromised
Solution Approach 1:
The patent modifies the chemical parameters by using dextran polymer and a specific crosslinking agent structure (formula I) to achieve both high natural origin index and effective conditioning performance. The crosslinking structure enhances the polymer's conditioning capability while maintaining its natural origin characteristics, thus resolving the contradiction between quantity of substance and reliability.
3Object-affected harmful factors
If dextran polymer crosslinked with dextran crosslinking agent is used, then silicone-free conditioning is achieved, but formulation complexity increases
Solution Approach 1:
The patent extracts and eliminates silicone components from the formulation, replacing them with a dextran-based system. While this increases formulation complexity by introducing new components, it successfully removes the harmful silicone substances, resolving the contradiction between reducing harmful factors and managing formulation complexity.
Data Source
AI summary
A hair conditioner formulation is provided, comprising: a dermatologically acceptable vehicle; and a conditioning polymer, wherein the conditioning polymer is a dextran polymer crosslinked with a dextran crosslinking agent of formula (I) wherein X is a halogen; wherein each R1 is independently selected from a substituted or unsubstituted C1-6 alkyl group; wherein each R2 is independently selected from the group consisting of a C1-6 alkanediyl group; wherein Y is a divalent bridging group.