Cyclic Ether Solvate for Low-Hygroscopicity Diol Purification
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Solution Overview
Problem
Existing resin cured products used as optical members in imaging modules face challenges with chromatic aberration and high hygroscopicity, which affect purity and reaction rates, leading to decreased quality and increased impurities.
Innovation Solution
A solvate of a diol compound with a heteroatom-containing skeleton, formed using a cyclic ether solvent, is developed to reduce hygroscopicity and improve purity, allowing for high-quality resin monomers with reduced chromatic aberration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a non-solvated crystalline form of diol compound is used, then high purity can be achieved, but hygroscopicity increases and absorbs moisture from atmosphere
Solution Approach 1:
The patent creates a composite material by forming a solvate between the diol compound and a specific solvent (cyclic carbonate or carbonyl compound). This composite structure incorporates solvent molecules within the crystal lattice, fundamentally changing the material's properties. The solvate form maintains the high purity of the crystalline structure while the incorporated solvent molecules occupy sites that would otherwise bind water, thereby reducing hygroscopicity.
Solution Approach 2:
The patent changes the physical and chemical parameters of the diol compound by transforming it from a non-solvated crystalline form to a solvate form. This parameter change involves altering the molecular arrangement and intermolecular forces through solvent incorporation, which modifies the surface properties and moisture absorption characteristics while maintaining chemical purity.
2Speed
If a large amount of reactive substrate is used to increase reaction rate, then esterification reaction speed improves, but amount of impurities increases and quality decreases
Solution Approach 1:
The patent changes the physical state and reactivity parameters of the diol compound by converting it to a solvate form. This parameter change modifies the compound's crystalline structure and surface energy, leading to improved solubility and reaction kinetics. The solvate form enables faster esterification reactions at lower substrate concentrations, thereby increasing reaction rate without generating excessive impurities.
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 solvate achieves high purity and low hygroscopicity, enhancing the quality of resin cured products for optical members by suppressing coloration and improving transmittance.
Implementation Method 1
A solvate of a diol compound with a heteroatom-containing skeleton, formed using a cyclic ether solvent
Implementation Method 2
the high hygroscopicity of the diol compound inhibits the esterification reaction... low hygroscopicity is required for the diol compound
Data Source
AI summary
Provided is a solvate of a compound (A) represented by the following formula and a method of manufacturing the solvate. A solvent forming the solvate includes a cyclic ether compound (B) having a carbon atom, an oxygen atom, and a hydrogen atom, which is 0.05 to 2.0 moles per mole of the compound (A).X and Y represent an oxygen atom, a sulfur atom, a nitrogen atom, or a carbon atom,at least one of X or Y represents a nitrogen atom,Z represents an atom group that forms a 5- to 7-membered aromatic ring with —X—C═C—Y—,L1 and L2 represent an alkylene group having 2 to 4 carbon atoms, R3 to R6 represent a substituent,q, r, v, and w represent specific integers,in a case where v represents an integer of 2 to 4, a plurality of R5's are not linked to each other to form a ring.