Branched Organosilicon Compounds for Controlled Functional Copolymer Design
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Solution Overview
Problem
There is a need for improved branched organosilicon compounds and copolymers with enhanced properties and methods for their synthesis, as well as compositions incorporating these compounds, to address the limitations of existing silicone materials.
Innovation Solution
A branched organosilicon compound with a specific general formula is synthesized by reacting an organosilicon compound and a functional compound, optionally with a catalyst, to form a copolymer through a reaction process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional linear or simple branched silicones are used, then the basic silicone properties are achieved, but the molecular weight distribution is broad and functional versatility is limited
Solution Approach 1:
The patent segments the silicone molecular structure into distinct modular units (core siloxane, branching units, terminal functional groups) that can be independently controlled. This segmentation allows precise control over molecular weight distribution while maintaining functional versatility, as each segment can be optimized separately through controlled hydrolysis and condensation reactions of specific silane precursors.
Solution Approach 2:
The patent applies local quality by creating regions of different functionality within the silicone molecule. The core region provides structural stability, intermediate regions provide controlled branching, and terminal regions provide specific chemical functionality. This local differentiation enables broad adaptability while maintaining precise molecular architecture control through selective functional group placement.
2Adaptability or versatility
If dendritic polymers with highly branched structures are synthesized, then functional versatility is improved, but the synthesis complexity and manufacturing difficulty increase
Solution Approach 1:
The patent employs preliminary action by pre-synthesizing controlled dendritic silane oligomers with defined molecular weights and functionalities before final polymerization. This preliminary structuring simplifies the overall manufacturing process, as the complex branched architecture is established in controlled stages rather than attempting to form it directly in one step, reducing synthesis complexity while maintaining functional versatility.
Solution Approach 2:
The patent uses silane hydrolysis and condensation reactions as intermediary steps to build the dendritic structure gradually. These intermediary reactions allow controlled formation of Si-O-Si bonds that create the branched architecture in a stepwise manner, making the synthesis process more manageable and less complex while achieving the desired highly functional dendritic polymer structure.
3Ease of manufacture
If broad molecular weight distribution is present in silicone polymers, then ease of manufacture is maintained, but the performance consistency and reliability are reduced
Solution Approach 1:
The patent applies parameter changes by systematically controlling reaction conditions (water content, temperature, catalyst concentration, reaction time) during silane hydrolysis and condensation to narrow the molecular weight distribution. These parameter optimizations maintain manufacturing feasibility while significantly improving performance consistency and reliability of the final silicone polymer products.
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 resulting branched organosilicon compound and copolymer exhibit enhanced properties and versatility, enabling a wide range of applications and improved performance in various compositions.
Implementation Method 1
reacting (A) an organosilicon compound and (B) a functional compound, optionally in the presence of (C) a catalyst, to give the branched organosilicon compound
Implementation Method 2
The copolymer comprises the reaction product of the branched organosilicon compound and a second compound reactive with the branched organosilicon compound
Data Source
AI summary
A branched organosilicon compound (“compound”) is provided having the general formula: (R1)3Si—X—NR2R3, where X is a divalent linking group; R2 is H or R; R3 comprises an acryloxy moiety; each R1 is selected from R and —OSi(R4)3, with the proviso that at least one R1 is —OSi(R4)3; where each R4 is selected from R, —OSi(R5)3, and —[OSiR2]mOSiR3; where each R5 is selected from R, —OSi(R6)3, and —[OSiR2]mOSiR3; and where each R6 is selected from R and —[OSiR2]mOSiR3, with the proviso that at least one of R4, R5 and R6 is —[OSiR2]mOSiR3; 0≤m≤100; and each R is a substituted or unsubstituted hydrocarbyl group. Also provided is a method of preparing the compound, a copolymer comprising the reaction product of the compound and a second compound reactive with the compound, a method of forming the copolymer, and a composition including at least one of the compound and the copolymer.