Inverse Latex Detergent with EDDS Sequestrant and AMPS Polymer
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Solution Overview
Problem
The challenge is to develop a detergent composition that complies with changing European regulations, particularly in the use of sequestrants for self-invertible inverse latices in detergent and cleaning formulations, while ensuring effective thickening and stability properties.
Innovation Solution
A detergent composition using a self-invertible inverse latex with a crosslinked anionic polyelectrolyte comprising monomer units from 2-methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid, acrylamide derivatives, and ethylenediaminedisuccinic acid in trisodium salt form, along with a specific emulsifying surfactant system, to maintain consistent thickening performance and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a self-invertible inverse latex with conventional sequestrants is used, then thickening performance is achieved, but compliance with new European regulations is not met
Solution Approach 1:
The invention changes the chemical parameter of the sequestrant from conventional options (like EDTA or DTPA) to ethylenediaminedisuccinic acid (EDDS), which complies with new European regulations. This parameter change maintains the thickening performance while achieving regulatory compliance, as EDDS provides similar metal complexing properties without the environmental concerns of conventional sequestrants.
2Reliability
If a new sequestrant (EDDS) is introduced to comply with regulations, then regulatory compliance is achieved, but consistent thickening performance may be compromised
Solution Approach 1:
The invention uses a composite polymer system comprising a crosslinked anionic polyelectrolyte with specific monomer units (2-methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid, acrylamide, and polyethylenic crosslinking monomer) combined with EDDS sequestrant. This composite formulation ensures consistent thickening performance by leveraging the synergistic interaction between the crosslinked polymer network and the EDDS sequestrant, maintaining viscosity stability despite the regulatory-driven sequestrant change.
3Productivity
If a crosslinked anionic polyelectrolyte with specific monomer units is used, then thickening performance is improved, but formulation complexity increases
Solution Approach 1:
The invention segments the polymer structure into distinct functional monomer units: 2-methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid for charge density, acrylamide for backbone structure, and polyethylenic crosslinking monomer for network formation. This segmentation allows each component to contribute specifically to thickening performance while enabling controlled synthesis and easier formulation development despite the crosslinked architecture.
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 composition achieves consistent thickening properties and stability, maintaining performance in the presence of electrolytes and over time, while adhering to regulatory changes, ensuring effective cleaning across various surfaces.
Implementation Method 1
These polymers, once introduced into polar phases, have the property of spreading out under the effect of electrostatic repulsions due to the presence of the (negative and/or positive) charges on the linear or branched, noncrosslinked or crosslinked polymer backbone.
Implementation Method 2
The liquid form, known under the name 'self-invertible inverse latex ', or the concentrated liquid form, is a composition that is in the form of a water-in-oil emulsion and comprises: an aqueous phase, a fatty phase comprising at least one oil, at least one emulsifying surfactant (S1) of water-in-oil type
Implementation Method 3
at least one emulsifying surfactant (S1) of water-in-oil type
Implementation Method 4
b) ethylenediaminedisuccinic acid in trisodium salt form
Data Source
AI summary
Detergent composition (F) for domestic or industrial use including, as thickener, a self-invertible inverse latex including an aqueous phase including: a) a crosslinked anionic polyelectrolyte (P) consisting of: at least one monomer unit derived from 2-methyl-2-[(1 -oxo-2-propenyl)amino]-1-propanesulfonic acid in free acid form or partially or totally salified form; —at least one monomer unit derived from at least one monomer chosen from the elements of the group consisting of acrylamide, N,N-dimethylacrylamide, ethacrylamide, N-isopropylacrylamide, N-tert-butylacrylamide; and at least one monomer unit derived from a polyethylenic crosslinking monomer (AR), b) ethylenediaminedisuccinic acid in trisodium salt form.