Spectacle Lens Mold Release Composition for Clean Polymerization
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Solution Overview
Problem
Existing mold release agents for producing plastic spectacle lenses are inadequate in terms of effectiveness and efficiency, leading to challenges in releasing the lenses from molds after polymerization.
Innovation Solution
A compound represented by Formula (1) is used as a mold release agent, combined with an isocyanate composition and an active hydrogen compound to form a polymerizable composition, which is then polymerized at controlled temperatures to produce a resin and spectacle lenses with improved mold release properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mold release agent is added to the polymerizable composition to enable lens release from the mold, then the ease of operation is improved, but the manufacturing precision deteriorates due to potential interference with polymerization or lens quality
Solution Approach 1:
The patent introduces a mold release agent as an intermediary substance that mediates between the polymerizable composition and the mold surface. The release agent forms a temporary barrier layer that prevents adhesion during polymerization but allows easy release afterward, without interfering with the polymerization reaction or lens quality. This is achieved by selecting compounds that are chemically inert to the polymerization process while providing sufficient release capability.
2Ease of operation
If existing mold release agents are used, then the mold release function is provided, but the productivity deteriorates due to inadequate release effectiveness requiring additional processing time or steps
Solution Approach 1:
The patent optimizes the molecular structure parameters of the mold release agent to enhance release effectiveness. By modifying parameters such as hydrophobicity, molecular weight, and functional group composition, the release agent achieves superior release performance that eliminates the need for additional processing steps, thereby improving production efficiency while maintaining ease of operation.
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 compound and isocyanate composition provide excellent mold release properties, enabling efficient production of spectacle lenses with enhanced processability and impact resistance.
Implementation Method 1
an isocyanate composition, a polymerizable composition, a resin, an optical material, a spectacle lens, method for producing resin, and method for producing spectacle lens
Implementation Method 2
filling a polymerizable composition into a mold and thermally polymerizing it
Data Source
Figure 1
AI summary
One embodiment of the present disclosure relates to a compound represented by Formula (1), a mold release agent containing the compound, an isocyanate composition, a polymerizable composition, a resin, an optical material, a spectacle lens, a method of producing a resin, and a method of producing a spectacle lens