Liquid Adhesive Concentrate Stabilization via Salt Additives
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Solution Overview
Problem
Existing wallpaper adhesives based on powdered polysaccharides face issues such as compositional irregularities, dust formation, and reduced adhesive strength due to instability and phase separation in liquid adhesive concentrates, which affect storage stability and application ease.
Innovation Solution
A liquid adhesive concentrate is formulated with an aqueous solution of alkali metal salts of inorganic oxyacids, nonionic polysaccharides, and copolymers, specifically containing sodium sulfate, to enhance storage stability, adhesive strength, and pourability, while maintaining a neutral pH.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If powdered polysaccharides are used as adhesive base, then the adhesive can be stored stably, but it requires complete dissolution with considerable physical effort and time, and produces dust formation
Solution Approach 1:
The patent changes the physical state parameter from powdered to liquid concentrate form, and modifies the chemical composition by adding specific salts (sodium chloride, calcium chloride, magnesium chloride) to control dissolution and stability characteristics, thereby achieving both storage stability and ease of mixing
Solution Approach 2:
The patent introduces salt additives as intermediary substances that mediate between the polysaccharide and water, facilitating complete dissolution without requiring considerable physical effort while maintaining storage stability
2Ease of operation
If liquid adhesive concentrates with dispersed polysaccharides are used, then mixing is easier, but storage stability is low and phase separation occurs easily
Solution Approach 1:
The patent modifies the chemical composition parameters by incorporating specific concentrations of salts (sodium chloride 5-20%, calcium chloride 1-10%, magnesium chloride 1-10%) that alter the solution properties to prevent phase separation while maintaining ease of mixing
Solution Approach 2:
The patent creates a composite adhesive concentrate system combining polysaccharides with multiple salt components and water, where the synergistic interaction between components provides both ease of mixing and storage stability
3Strength
If high concentration of polysaccharides is used in aqueous solution, then adhesive strength increases, but the solution becomes difficult to handle and pourable
Solution Approach 1:
The patent adjusts the concentration parameters of polysaccharides (5-30%) and optimizes the salt-to-water ratio to maintain appropriate viscosity and pourability while ensuring sufficient adhesive strength after dilution
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 solution provides a stable, easy-to-mix adhesive concentrate with high adhesive strength after dilution, preventing thickening and maintaining good flowability, thus addressing the limitations of previous technologies.
Implementation Method 1
a liquid adhesive concentrate which contains water, at least one nonionic polysaccharide, at least one copolymer and a salt stabiliser in order to improve the storage stability and adhesive strength
Implementation Method 2
The adhesive strength, especially the wet adhesive strength, of this system is not sufficiently pronounced
Data Source
AI summary
The invention relates to a liquid adhesive concentrate to improve storage stability and applicability. The objective is met by providing a liquid adhesive concentrate containing water, at least one non-ionic polysaccharide, at least one copolymer, and at least one alkali metal salt of a bivalent to tetravalent inorganic oxygen acid. The present invention further relates to a method for producing such an adhesive concentrate; an adhesive produced by diluting a liquid adhesive concentrate of the invention, or an adhesive concentrate produced according to a method of the invention, with water, and the application of a liquid adhesive concentrate of the invention, or an adhesive concentrate produced according to a method of the invention, for producing adhesives, wallpaper paste, thickening agents, or color batches.