Rinse Aid Terpolymer Defoaming and Sheet Formation
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Solution Overview
Problem
Current rinse aid compositions face challenges in effectively reducing spotting on dishware during the warewashing process, particularly with high foaming surfactants, and there is a need for environmentally friendly alternatives that are suitable for food service industries.
Innovation Solution
A solid or liquid rinse aid composition comprising a defoamer, a sheeting agent, and a terpolymer of maleic, vinyl acetate, and ethyl acrylate, which are GRAS (Generally Recognized as Safe) and biodegradable, providing improved rinsing properties and being substantially free of sulfates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high foaming surfactants are used in rinse aids, then sheet formation is promoted, but foaming interferes with warewashing machine operation
Solution Approach 1:
A defoamer component acts as an intermediary substance that selectively suppresses foam generation while preserving the sheet formation capability of high foaming surfactants. The defoamer is incorporated into the rinse aid composition at specific concentrations to destabilize foam structures without interfering with the surfactant's ability to form continuous sheets on dishware surfaces.
Solution Approach 2:
The cloud point of the surfactant is adjusted to be at or above the rinse water temperature, which enables the surfactant to remain soluble during rinsing but precipitate and form sheets on the warm dishware surface. This parameter change allows high foaming surfactants to be used effectively without causing spotting.
2Object-generated harmful factors
If defoamers are added to suppress foam, then foaming is reduced, but chemical complexity increases
Solution Approach 1:
Simple, readily available defoaming agents are used instead of complex specialized compounds. The defoamer component comprises common substances that can be easily sourced and incorporated, reducing overall formulation complexity while maintaining effective foam suppression.
3Reliability
If conventional rinse aids are used to reduce spotting, then rinsing performance is improved, but environmental friendliness is compromised
Solution Approach 1:
The molecular structure of the surfactant is modified to incorporate biodegradable components while maintaining the cloud point and sheet formation properties. The surfactant is designed to break down into harmless substances after use, eliminating persistent environmental contaminants while preserving rinsing effectiveness.
Solution Approach 2:
The rinse aid comprises a composite formulation combining biodegradable surfactants with eco-friendly defoamers and sheeting agents. Each component is selected for its environmental compatibility, creating a synergistic mixture that achieves superior rinsing performance without harmful environmental effects.
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 effectively reduces spotting and foaming, offering improved rinsing performance while being environmentally friendly and safe for use in food service settings, thus addressing the limitations of existing rinse aids.
Implementation Method 1
the defoaming agents can include surfactants with a cloud point at or below the temperature of the rinse water, and would thereby precipitate out and modify the air/liquid interface and destabilize the presence of foam
Implementation Method 2
the surfactant in the rinse agent is absorbed on the surface at temperatures at or above its cloud point, and thereby reduces the solid-liquid interfacial energy and contact angle. This leads to the formation of a continuous sheet which drains evenly from the surface
Implementation Method 3
rinse aid compositions comprising a defoamer, sheeting agent, and a terpolymer of maleic, vinyl acetate, and ethyl acrylate
Data Source
AI summary
Rinse aid compositions, methods of use, and methods of making said composition are disclosed. The rinse aid compositions can be solid or liquid. The rinse aid compositions comprise a defoamer, a sheeting agent, and a terpolyer of of maleic, vinyl acetate, and ethyl acrylate. Preferred sheeting agents include one or more alcohol ethyoxylates. Preferred defoamer components include a polymer compound including one or more ethylene oxide groups. The solid rinse aid compositions are preferably substantially free of sulfate and sulfate-containing compounds.