Calixarene Compound Adhesion and Hardness
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Solution Overview
Problem
Calixarene compounds exhibit excellent heat resistance and robustness but are highly crystalline, brittle, and have low adhesion to substrates, limiting their utility in applications such as paints and resist materials.
Innovation Solution
A calixarene compound with a novel structure containing at least one —CH2OH group or phenolic hydroxy group and one carbon-carbon unsaturated bond, which forms a cured product with enhanced heat resistance, hardness, and adhesion to substrates, suitable for various applications including paints, printing inks, adhesives, and interlayer insulating films.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If calixarene compounds are used for their heat resistance and robustness, then heat resistance and hardness are improved, but adhesion to substrate deteriorates
Solution Approach 1:
The patent modifies the chemical structure parameters of calixarene compounds by introducing specific functional groups (carboxyl groups at predetermined positions) to change the surface properties and chemical reactivity, thereby improving adhesion while preserving heat resistance
Solution Approach 2:
The patent creates a composite structure by combining calixarene core structure with specific functional groups (carboxyl groups and their derivatives), forming a hybrid material that exhibits both the inherent heat resistance of calixarene and the adhesion properties of the functional groups
2Strength
If calixarene compounds are used for their robustness, then hardness is improved, but brittleness increases
Solution Approach 1:
The patent changes the molecular flexibility parameters by introducing flexible linkers and functional groups that can rotate and adapt to stress, reducing brittleness while maintaining the hard calixarene core structure
Solution Approach 2:
The patent introduces dynamic elements into the rigid calixarene structure through flexible chains and rotatable bonds, allowing the material to deform elastically under stress rather than fracturing, thus reducing brittleness while preserving hardness
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 novel calixarene compound achieves improved properties in heat resistance, hardness, and substrate adhesion, making it suitable for diverse applications while maintaining the benefits of calixarene compounds.
Implementation Method 1
A calixarene compound containing, per molecule, at least one —CH2OH group or phenolic hydroxy group and at least one carbon-carbon unsaturated bond can form a cured product
Data Source
AI summary
A calixarene compound represented by formula (1) below is provided. The calixarene compound contains, per molecule, at least one —CH2OH group or phenolic hydroxy group and at least one carbon-carbon unsaturated bond. R1's are a structural moiety (A), which has a —CH2OH group; a structural moiety (B), which has a carbon-carbon unsaturated bond; a structural moiety (C), which has a —CH2OH group and a carbon-carbon unsaturated bond; a monovalent organic group (D), which is different from (A), (B), and (C); or a hydrogen atom (E). R2's are (A), (B), (C), (D), or (E) provided that not all R2's are (E). R3's are one of a hydrogen atom, an aliphatic hydrocarbon group, and an aryl group, n is 2 to 10. * is a point of attachment to an aromatic ring. A curable composition including the calixarene compound is provided. A cured product of the curable composition is provided