Superabsorbent Polymer Texture Composition
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Solution Overview
Problem
Conventional texture compositions using cellulosic thickeners suffer from air entrainment, runniness, and high costs, making them unsuitable for achieving desired aesthetic appearances on substrates like wallboard and ceilings.
Innovation Solution
A texture composition comprising non-setting minerals like calcium carbonate and superabsorbent polymers that absorb at least 50 times their mass, eliminating the need for setting-type cementitious materials and cellulosic thickeners, thereby reducing air entrainment and improving workability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cellulosic thickeners are used in texture compositions, then the composition can be formulated, but air entrainment occurs leading to pinholes and runniness compromising workability
Solution Approach 1:
The patent removes cellulosic thickeners from the texture composition formulation and replaces them with a combination of water-soluble polymers and surfactants. This extraction of the problematic thickening agent eliminates air entrainment and pinhole formation while maintaining the composition's formulability through alternative thickening and stabilization mechanisms.
Solution Approach 2:
The patent changes the chemical parameters of the formulation by substituting cellulosic thickeners with water-soluble polymers and adjusting surfactant concentrations. These parameter changes modify the rheological properties and air-entraining characteristics of the composition, eliminating pinholes while preserving workability.
2Object-affected harmful factors
If cellulosic thickeners are used to thicken the composition, then viscosity is increased, but the formulation becomes runny upon application
Solution Approach 1:
The patent introduces surfactants as intermediary substances that mediate between the water-soluble polymers and the aqueous phase. These surfactants create stable micellar structures that provide consistent viscosity and prevent runniness during application, while the water-soluble polymers provide the primary thickening effect without the drawbacks of cellulosic alternatives.
Solution Approach 2:
The patent creates a composite thickening system combining water-soluble polymers and surfactants. This composite approach leverages the viscosity-providing capabilities of polymers while using surfactants to stabilize the rheological properties during application, preventing the runniness that occurs with cellulosic thickeners.
3Ease of manufacture
If cellulosic thickeners are used in texture compositions, then the composition can be formulated, but the cost increases considerably
Solution Approach 1:
The patent replaces expensive cellulosic thickeners with more economical water-soluble polymers and surfactants. These alternative ingredients provide the necessary formulation capabilities at lower cost, making the texture composition more economically viable while maintaining performance requirements.
Solution Approach 2:
The patent changes the economic parameters of the formulation by substituting high-cost cellulosic thickeners with lower-cost water-soluble polymers and surfactants. This parameter change in ingredient selection maintains the formulation's technical capabilities while significantly reducing manufacturing costs.
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 improved water retention, reduced pinholes, and enhanced application consistency, allowing for smooth, rough, or three-dimensional finishes without the drawbacks of cellulosic thickeners, such as runniness and high costs.
Implementation Method 1
superabsorbent polymer that can absorb at least about 50 times its mass
Implementation Method 2
superabsorbent polymer...improve water retention
Data Source
AI summary
Disclosed is a composition (e.g., a texture composition) comprising, consisting of, or consisting essentially of calcium carbonate and superabsorbent polymer that can absorb at least about 50 times its mass and having a particle size of about 250 microns or less, wherein the composition is substantially free of a setting-type cementitious material. In some embodiments, cellulosic thickener content is reduced or eliminated from the texture composition. Also disclosed is a method of finishing a substrate comprising applying to the surface a wet composition comprising, consisting of, or consisting essentially of calcium carbonate and superabsorbent polymer that can absorb at least about 50 times its mass and having a particle size of about 250 microns or less, wherein the composition is substantially free of a setting-type cementitious material, and drying the composition on the substrate.