Hybrid Organomineral Coating for Ion Migration Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for coating the internal surfaces of containers, such as glass and plastic bottles, fail to provide a neutral, durable, and biocompatible barrier layer that prevents ion migration and chemical interactions, especially for products like vaccines and cosmetics, due to issues like residual acid contamination, insufficient barrier effectiveness, and mechanical resistance limitations.
Innovation Solution
A process forming an organo-mineral hybrid coating layer using a solution containing alkoxysilanes, organofunctional molecular precursors, and citric acid, which undergoes hydrolysis and condensation to create a thick, impermeable, and radiation-resistant barrier layer that adheres well to various container materials without subsequent heating or chemical treatments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional glass or plastic containers are used without coating, then manufacturing is simple and cost-effective, but ion migration and chemical interactions with container contents occur
Solution Approach 1:
The patent applies composite materials by creating a hybrid organo-mineral coating layer that combines organic components (alkoxysilanes, organofunctional molecular precursors) with inorganic components (citric acid, silica network). This composite structure provides both barrier functionality to prevent ion migration and adhesion to container surfaces, resolving the contradiction between simplicity and protection.
Solution Approach 2:
The patent uses parameter changes by controlling the hydrolysis and condensation reaction conditions (pH, temperature, moisture content) to transform the coating solution into a solid gel layer. This parameter transformation enables the coating to form a dense barrier structure that prevents ion migration while maintaining processability during application.
2Object-affected harmful factors
If existing Sol-gel coating methods are used, then a barrier layer is formed, but residual acid contamination and insufficient barrier effectiveness occur
Solution Approach 1:
The patent converts the potentially harmful strong acids traditionally used in Sol-gel processes into beneficial citric acid, which is biocompatible and leaves no harmful residues. Citric acid serves as both the catalyst for hydrolysis and condensation and as a source of calcium ions that strengthen the coating network, transforming a harmful factor into a beneficial one.
Solution Approach 2:
The patent changes the pH parameter from highly acidic conditions in conventional methods to a milder acidic environment using citric acid (pH 3-6). This parameter change ensures complete reaction of acid groups, eliminates residual harmful acid, and maintains barrier effectiveness through proper gelation and network formation.
3Object-affected harmful factors
If thick coating layers are applied to ensure barrier properties, then ion migration is prevented, but mechanical resistance and adhesion to container surface decrease
Solution Approach 1:
The patent optimizes the concentration parameters of the coating solution (precursor ratios, solvent content, catalyst amount) to achieve maximum barrier effectiveness at minimal thickness. By controlling the hydrolysis and condensation reaction parameters, the coating forms a dense, cross-linked network that provides excellent ion migration prevention without requiring excessive thickness that would compromise mechanical strength.
Solution Approach 2:
The hybrid organo-mineral composite structure provides both barrier functionality and mechanical strength. The organic components ensure adhesion to the container surface and flexibility, while the inorganic silica network provides barrier properties and structural strength, allowing thin coating layers to maintain both protection and mechanical integrity.
4Object-affected harmful factors
If room temperature application is used for coating, then energy consumption is reduced and process simplicity increases, but coating thickness and barrier effectiveness are insufficient
Solution Approach 1:
The patent modifies the chemical composition parameters of the coating solution (adding citric acid catalyst, optimizing precursor ratios, adjusting solvent content) to enable gelation and solidification at room temperature or with minimal heating. This parameter optimization allows the formation of a thick, effective barrier layer without requiring high-energy drying processes, as the gelation reaction itself drives solvent removal and network formation.
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 significantly enhances hydrolytic, mechanical, and chemical resistance of the coating layer, ensuring minimal ion release and improved shelf life for products, while allowing functionalization without compromising barrier properties, and can be applied at room temperature for industrial-scale production.
Implementation Method 1
A process forming an organo-mineral hybrid coating layer using a solution containing alkoxysilanes, organofunctional molecular precursors, and citric acid, which undergoes hydrolysis and condensation
Implementation Method 2
A process forming an organo-mineral hybrid coating layer using a solution containing alkoxysilanes, organofunctional molecular precursors, and citric acid, which undergoes hydrolysis and condensation
Implementation Method 3
a solution is formed containing at least one solvent, water, at least one first complexing molecular precursor from the family of alkoxysilanes, at least one second organofunctional molecular precursor and/or silicone, and citric acid as catalyst
Data Source
Figure 1~3
AI summary
The invention relates to a method for producing a hybrid organo-mineral layer (12) for coating the inner surface (13) of a receptacle as well as to said receptacle for holding products that are biocompatible for humans and/or animals. According to the invention, a solution is formed that contains at least one solvent, water, at least one complexing molecular alkoxysilane precursor, at least one organo-functional molecular precursor and/or silicone, and a catalytic acid, the complexed solution, which is undergoing hydrolysis and condensation, is applied to at least one portion of the inner surface of the receptacle, the applied solution is dried at a specific temperature, and the receptacle is conveyed away and stored.