Esterquat-Dextran Fabric Care Composition for Softer Fabrics
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Solution Overview
Problem
There is a need for fabric care formulations that offer a desirable balance of performance properties, including fabric softening, and an increased natural origin index compared to conventional formulations.
Innovation Solution
A fabric care formulation comprising water, an esterquat, and a deposition aid polymer, where the deposition aid polymer is a dextran polymer functionalized with quaternary ammonium moieties, synergistically enhancing fabric softening properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional fabric care formulations are used, then fabric softening properties are provided, but the natural origin index is reduced
Solution Approach 1:
The formulation combines esterquat (synthetic component) with dextran polymer (natural component derived from starch) to create a composite fabric care composition. This composite approach allows the product to achieve both high natural origin index (60-95% from dextran) and effective fabric softening properties through the synergistic action of cationic surfactant and deposition aid polymer.
Solution Approach 2:
The invention modifies the chemical structure of natural dextran polymer by quaternizing it to introduce cationic properties. This parameter change (adding quaternary ammonium groups) transforms the natural polymer into a deposition aid that can effectively soften fabrics while maintaining the high natural origin content of the base material.
2Reliability
If single component fabric softeners are used, then formulation simplicity is maintained, but performance balance is insufficient
Solution Approach 1:
The formulation merges two distinct functional components - esterquat (a cationic surfactant providing softening) and quaternized dextran polymer (a deposition aid polymer enhancing fabric care) - into a single synergistic composition. This combination achieves superior performance balance including fabric softening, static control, and deposit control, while the components are integrated into one unified formulation.
Solution Approach 2:
The dextran polymer component serves multiple functions simultaneously: it acts as a deposition aid to control fabric softener deposition, provides fabric softening through its cationic groups, and contributes to the overall fabric care performance. This multi-functionality reduces the need for separate additives while enhancing overall formulation 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 combination of esterquat and dextran polymer with quaternary ammonium moieties provides a favorable balance of performance properties, particularly fabric softening, in treated fabrics.
Implementation Method 1
a deposition aid polymer, wherein the deposition aid polymer is a dextran polymer functionalized with quaternary ammonium moieties
Implementation Method 2
the deposition aid polymer in combination with the esterquat synergistically enhance softness of a treated fabric
Data Source
AI summary
A fabric care formulation is provided including water; an esterquat and a deposition aid polymer, wherein the deposition aid polymer is a dextran polymer functionalized with quaternary ammonium moieties.