Polymeric Dispersant for High-Surfactant Detergent Phase Stability
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Solution Overview
Problem
Existing detergent compositions with high surfactant levels lack an effective dispersant polymer that enhances their performance, particularly in laundry detergents.
Innovation Solution
A polymeric dispersant comprising specific weight percentages of polymerized residues from monomers A, B, and C, with a defined molecular weight range, is formulated using a method involving polymerization in a solvent mixture of organic polyol and water, which improves detergent composition performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high surfactant levels are used in detergent compositions, then cleaning performance is improved, but phase stability deteriorates
Solution Approach 1:
The polymeric dispersant acts as an intermediary substance between surfactants and fabric surfaces. It mediates the interaction by providing specific functional groups that enhance surfactant effectiveness while maintaining formulation stability, thus resolving the contradiction between improved cleaning performance and phase stability
Solution Approach 2:
The invention changes the molecular weight parameter of the dispersant polymer to a specific range (10,000-100,000 g/mol) and adjusts the compositional parameters (ratios of hydrophilic to hydrophobic monomers) to optimize both cleaning performance and phase stability in high-surfactant formulations
2Device complexity
If traditional polymers are used as dispersants, then formulation simplicity is maintained, but performance on fabrics is insufficient
Solution Approach 1:
The dispersant polymer is designed as a composite material containing specific functional groups (carboxylic acid, hydroxyl, and amine groups) in defined ratios. This composite structure provides enhanced fabric performance while maintaining formulation simplicity through a single polymer component that delivers multiple functions
3Productivity
If dispersant polymer is added to enhance performance, then cleaning effectiveness is improved, but formulation complexity increases
Solution Approach 1:
The polymeric dispersant is designed with multi-functionality, providing dispersant, fabric softening, and formulation stabilizing properties through a single polymer component. This universality improves cleaning effectiveness while minimizing formulation complexity by eliminating the need for multiple separate additives
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 polymeric dispersant significantly enhances the whiteness index of fabrics and maintains phase stability in high-surfactant detergent formulations, demonstrating superior performance compared to traditional polymers.
Implementation Method 1
A method for making the polymeric dispersant is also disclosed comprising combining a monomer of structure (A) and monomer of structure (B) in a solvent mixture composed of a mixture of an organic polyol and water
Data Source
AI summary
A polymeric dispersant comprising: (a) from 50 to 95 wt% polymerized residues of monomer (A): (A) wherein R1 is hydrogen, methyl, ethyl or COOX; R2 is hydrogen, methyl or ethyl; R3 is hydrogen, methyl or ethyl; and X is hydrogen, sodium, potassium, ammonium or a combination thereof; (b) from 1 to 20 wt% polymerized residues of monomer (B): (B) wherein R4, R5, and R6 are independently hydrogen, methyl or ethyl; R7 is C8-C30 alkyl or C8-C30 aralkyl; and (c) from 3 to 30 wt% polymerized residues of monomer (C): (C) wherein R8, R9, and R10 are independently hydrogen, methyl or ethyl; R11 and R12 are independently hydrogen, C1-C8 alkyl or hydroxymethyl; and n is an integer from 1 to 3.