Silicone Monomer Composition for Solubility Without Loss of Transparency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing silicone monomers lack effective means to significantly enhance their solubility in various solvents and other raw materials, limiting the oxygen permeability and transparency of medical devices produced from them.
Innovation Solution
A silicone monomer mixture comprising compounds of specific general formulas (I) and (II) in defined proportions, without a hydroxyl group, to achieve high solubility and transparency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If silicone monomer with hydroxyl group is used to increase solubility, then solubility in various solvents is improved, but oxygen permeability and transparency of medical devices deteriorate
Solution Approach 1:
The patent changes the chemical structure parameters of the silicone monomer by introducing a specific cyclic structure with formula (I) containing silicon-oxygen-silicon bonds and methyl groups, replacing the conventional hydroxyl group approach. This structural parameter change achieves high solubility without compromising oxygen permeability and transparency, as the cyclic structure maintains the necessary optical and respiratory properties while providing enhanced solvent compatibility.
Solution Approach 2:
The patent creates a composite molecular structure combining silicon atoms, oxygen atoms, and methyl groups in a specific cyclic arrangement (formula I). This composite structure integrates the solubility-enhancing capability with the oxygen permeability and transparency requirements, achieving a multi-functional monomer that simultaneously provides good solubility in various solvents and maintains high oxygen permeability and transparency in the final medical device.
2Reliability
If silicone monomer purity is increased to improve oxygen permeability and transparency, then manufacturing complexity and purification steps increase
Solution Approach 1:
The patent extracts and eliminates the need for complex purification steps by designing a monomer structure (formula I) that inherently provides the required purity level. The specific cyclic structure with silicon, oxygen, and methyl groups in defined proportions achieves high oxygen permeability and transparency without requiring additional purification processes, thereby simplifying the manufacturing workflow while maintaining product quality.
3Ease of manufacture
If conventional silicone monomer structure is used, then manufacturing process is simple, but solubility in various solvents and raw materials is insufficient
Solution Approach 1:
The patent modifies the molecular structure parameters by introducing the cyclic structure of formula (I) with specific silicon-oxygen-silicon bonding and methyl group arrangements. This parameter change enhances solubility in various solvents and raw materials while maintaining manufacturing simplicity, as the structural modification is achieved during the monomer synthesis stage without adding complex processing steps.
Data Source
AI summary
An object of the present invention is to provide a silicone monomer mixture having extremely good solubility in various solvents and other raw materials, and can realize a medical device having extremely high oxygen permeability and transparency. The present invention provides a silicone monomer mixture including a compound having a specific structure (I) and a compound having another specific structure (II), wherein in the mixture, the percentage of the compound of the specific structure (I) is 90.0 to 99.5%, the percentage of the compound having the other specific structure (II) relative to the total amount of the compound having the specific structure (I) and the compound having the other specific structure (II) is 0.01 to 3.0%.