Unsaturated Bissilyl Compound Polymer Modification
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Solution Overview
Problem
Existing polymer modifiers with a short distance between functional groups and unsaturated bonds fail to fully enhance polymer properties, limiting their effectiveness in modifying polymers for improved performance.
Innovation Solution
Development of unsaturated bond-containing bissilyl compounds with an adequate distance between the unsaturated bond and functional group, which are synthesized by reacting unsaturated bond-containing halosilane compounds with amine compounds, allowing for significant improvements in polymer properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If polymer modifiers with short distance between functional group and unsaturated bond are used, then the modification process is simple, but the polymer properties cannot be sufficiently improved
Solution Approach 1:
The patent changes the key parameter of the modifier structure by increasing the distance between the functional group and the unsaturated bond through the introduction of a siloxane linkage. This structural parameter change allows the functional group to be positioned further from the polymer chain while maintaining modification effectiveness, thereby resolving the contradiction between simple modification process and sufficient property improvement.
2Ease of operation
If functional group is located close to polymer chain, then modification is easier to achieve, but the intended modification purpose cannot be fully attained
Solution Approach 1:
The siloxane linkage serves as an intermediary structure between the functional group and the polymer chain. This intermediary allows the functional group to be positioned at an optimal distance from the polymer chain, facilitating both the modification process and the fulfillment of modification purposes such as improving melt tension, fluidity, rigidity, and impact resistance.
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 unsaturated bond-containing bissilyl compounds effectively modify polymers, leading to enhanced properties such as improved melt tension, fluidity, rigidity, and impact resistance, making them suitable for diverse applications.
Implementation Method 1
modification of polymers using compounds having a desired functional group and an unsaturated bond as a modifier
Implementation Method 2
compounds having a desired functional group and an unsaturated bond as a modifier
Implementation Method 3
unsaturated bond-containing bissilyl compound
Data Source
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AI summary
An unsaturated bond-containing bissilyl compound having formula (1) is provided wherein R1-R3 each are hydrogen or a C1-C20 monovalent hydrocarbon group, R4, R5, R7, R8 and R9 each are a C1-C20 monovalent hydrocarbon group, R6 is a C1-C20 divalent hydrocarbon group, and n is 0, 1 or 2. The bissilyl compound is a novel modifier and is effective for modifying polymers to improve their properties.