Methacrylic Ester Compositions for Impurity Suppression During Storage
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Solution Overview
Problem
Ester compound-containing compositions comprising (meth)acrylic acid esters deteriorate in quality over time due to the generation of impurities such as dimers and pyruvic acid esters during storage.
Innovation Solution
Incorporating specific components like compounds represented by Formulas (a1) to (a10) into the ester compound-containing composition, with the ester compound (I) comprising 95.00% to 99.99% by mass, suppresses the formation of impurities by trapping radicals and anions, thereby enhancing storage stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the ester compound-containing composition is stored for a certain period after production, then the composition can be used in various applications, but the quality of the composition deteriorates due to generation of impurities such as dimers and pyruvic acid esters
Solution Approach 1:
The patent applies preliminary action by adding a polymerization inhibitor to the ester compound-containing composition before storage. This inhibitor proactively prevents the formation of impurities such as dimers and pyruvic acid esters during the storage period, thereby maintaining quality stability throughout the composition's shelf life. The inhibitor is introduced in advance to counteract potential degradation mechanisms before they can occur.
2Reliability
If a polymerization inhibitor is added to suppress polymerization and improve storage stability, then the composition maintains quality during storage, but the composition becomes unsuitable for polymerization reactions requiring high monomer concentration
Solution Approach 1:
The patent applies parameter changes by carefully controlling the concentration of the polymerization inhibitor within a specific range (0.01% to 0.5% by mass). This parameter optimization allows the inhibitor to effectively prevent unwanted polymerization during storage while maintaining sufficient monomer concentration and reactivity for successful polymerization reactions when needed. The specific concentration range balances storage stability with subsequent polymerization efficiency.
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 effectively prevents the generation of dimers and pyruvic acid esters, ensuring the ester compound-containing composition maintains excellent storage stability and quality.
Implementation Method 1
suppresses the formation of impurities by trapping radicals and anions
Implementation Method 2
suppresses the formation of impurities by trapping radicals and anions
Data Source
AI summary
A methacrylic acid-containing composition comprises the following ester compound (I) and the following component (A), in which the contained amount of the ester compound (I) is 95.00% to 99.99% by mass with respect to the total mass:Ester compound (I): one or more compounds selected from the group consisting of an ester compound (1), an ester compound (2), a compound (3), an ester compound (4), and an ester compound (5);Component (A): one or more components selected from the group consisting of a component A1, a component A2, a component A6, a component A7, a component A8, a component A9, and a component A10.