Alicyclic Silane Composition for Polymer-Inorganic Dispersion
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Solution Overview
Problem
Conventional silane compounds with reactive functional groups exhibit low affinity and reactivity with organic polymer materials, leading to poor dispersion and mixing, and insufficient performance as coupling agents or adhesion aids.
Innovation Solution
A silane compound with an alicyclic hydrocarbon moiety containing an olefin structure and a silyl group is blended to enhance affinity and reactivity, improving dispersibility and adhesion between organic and inorganic materials, and enhancing viscoelastic properties of cross-linked products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a silane compound with high polarity reactive functional group is used, then reactivity with inorganic material is improved, but affinity with organic polymer material is low leading to poor dispersion and mixing
Solution Approach 1:
The silane compound combines two different functional groups with distinct properties: a polar reactive functional group (for inorganic material reactivity) and a non-polar hydrocarbon group (for organic polymer affinity). This composite molecular structure resolves the contradiction by integrating both required functionalities into a single compound, achieving both high reactivity with inorganic materials and good affinity with organic polymers.
Solution Approach 2:
Different parts of the silane compound molecule have different polarities tailored for different functions: the reactive functional group (e.g., alkoxy, carboxy, amino, mercapto) provides high polarity for inorganic material interaction, while the hydrocarbon group provides low polarity for organic polymer interaction. This local differentiation of properties within the molecule resolves the contradiction between reactivity and affinity.
2Stability of the object's composition
If a silane compound with low polarity reactive functional group is used, then affinity with organic polymer material is improved, but reactivity with inorganic material is low resulting in insufficient performance
Solution Approach 1:
The silane compound integrates two different functional groups with distinct properties: a polar reactive functional group (for inorganic material reactivity) and a non-polar hydrocarbon group (for organic polymer affinity). This composite molecular structure resolves the contradiction by integrating both required functionalities into a single compound, achieving both good affinity with organic polymers and high reactivity with inorganic materials.
Solution Approach 2:
Different parts of the silane compound molecule have different polarities tailored for different functions: the reactive functional group (e.g., alkoxy, carboxy, amino, mercapto) provides high polarity for inorganic material interaction, while the hydrocarbon group provides low polarity for organic polymer interaction. This local differentiation of properties within the molecule resolves the contradiction between affinity and reactivity.
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 silane compound improves viscoelastic properties, tensile properties, and scorch resistance of cross-linked products, while enhancing adhesive properties.
Implementation Method 1
a silane compound having a reactive functional group and a hydrolyzable group has been used as a constituent of a silane coupling agent in a rubber composition in order to improve dispersibility of an organic polymer material such as rubber and an inorganic material such as silica or glass
Implementation Method 2
such a silane compound has a substituent such as an alkoxysilyl group as a hydrolyzable group having high reactivity with an inorganic material such as silica
Data Source
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AI summary
[Problem to be Solved] To provide a silane compound for obtaining a cross-linked product which hardly generates poor dispersion or adhesion between an organic polymer material and an inorganic material and exhibits excellent viscoelastic properties or adhesive properties, or a composition comprising the silane compound. [Means for solving the problem] A silane compound represented by formula (1): wherein R1, R2, and R3 each independently represents a hydrocarbon group optionally containing an oxygen atom or a nitrogen atom, or a hydrogen atom; L represents a hydrocarbon group optionally containing at least one heteroatom selected from the group consisting of nitrogen, oxygen, and sulfur; a is an integer of 0 or 1; b is an integer of 0 or 1; c is each independently an integer of 0 or 1; d is each independently an integer of 0 or 1; e is an integer from 0 to 5; R4, R5, R6, and R7 represent a hydrogen atom, a methyl group, or an alkyl group having 2 to 10 carbons, or one of R4 or R5 and R6 or R7 may form a cross-linked structure represented by -(CH2)f-, and f is an integer from 1 to 5; R8, R9, R10 and R11 represent a hydrogen atom, a methyl group or an alkyl group having 2 to 10 carbons, or one of R8 or R9 and R10 or R11 may form a cross-linked structure represented by -(CH2)g-, g is an integer from 1 to 5, R16 is a hydrogen atom, a methyl group or an alkyl group having 2 to 8 carbons and R17 is a hydrogen atom, a methyl group or an alkyl group having 2 to 10 carbons, where R12 and R13 bond to each other to form a double bond and R14, R15, and R18 are a hydrogen atom, a methyl group or an alkyl group having 2 to 10 carbons, or R14 and R15 bond to each other to form a double bond and R12, R13, and R18 are a hydrogen atom, a methyl group or an alkyl group having 2 to 10 carbons; or R16 and R17 may bond to each other to form a 4 to 9 membered alicyclic hydrocarbon, where R14 and R15 bond to each other to form a double bond and R12, R13, and R18 are a hydrogen atom, a methyl group or an alkyl group having 2 to 10 carbons.