Sulfur-Phosphorus Polymers from Beta-Lactones
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Solution Overview
Problem
Current methods for producing sulfur- and phosphorus-containing polymers often rely on non-renewable sources and lack efficient alternative synthesis routes, limiting the use of bio-based materials in industrial applications.
Innovation Solution
The development of methods to produce sulfur- and phosphorus-containing polymers from beta-lactones using dithionite compounds, hydrogen sulfide or thiol compounds, and phosphanediamine/phosphanetriamine compounds, which allow for the creation of polymers with repeating sulfonyl-dialkanoic acid or alkanoate moieties through condensation polymerization, utilizing bio-based ethylene oxide and carbon monoxide as renewable feedstocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional methods are used to synthesize sulfur- and phosphorus-containing polymers, then the polymers can be produced with established reliability, but the methods rely on non-renewable sources and lack sustainability
Solution Approach 1:
The patent changes the chemical parameters of the synthesis process by using beta-lactones as starting materials instead of conventional non-renewable feedstocks. This parameter change enables the production of polymers from renewable sources while maintaining manufacturing reliability through established chemical reaction mechanisms.
Solution Approach 2:
The patent introduces beta-lactones as intermediary compounds that can be derived from renewable sources. These beta-lactones serve as mediators to create sulfur- and phosphorus-containing polymers, bridging the gap between renewable feedstocks and the desired polymer products.
2Adaptability or versatility
If alternative bio-based methods are developed, then sustainability is improved, but the synthesis efficiency and industrial applicability may be reduced
Solution Approach 1:
The patent segments the synthesis process into distinct steps: first converting renewable feedstocks to beta-lactones, then polymerizing these beta-lactones to form the final sulfur- or phosphorus-containing polymers. This segmentation allows for optimized conditions at each stage, improving overall synthesis efficiency while maintaining bio-based sustainability.
Solution Approach 2:
The patent optimizes synthesis efficiency by changing key parameters such as temperature, pressure, and catalyst selection in the polymerization step. These parameter adjustments ensure that the bio-based method achieves industrial-scale productivity comparable to conventional methods.
3Adaptability or versatility
If new synthesis routes are implemented, then renewable source utilization is improved, but the process complexity and manufacturing difficulty increase
Solution Approach 1:
The patent uses beta-lactones as intermediary compounds that simplify the overall process. By converting renewable feedstocks into these well-understood chemical intermediates first, the patent reduces the complexity of directly synthesizing the final polymers from raw renewable materials.
Solution Approach 2:
The patent extracts and isolates the beta-lactone intermediate from the renewable feedstock conversion process, allowing it to be handled and polymerized using established industrial techniques. This extraction step separates the renewable source utilization aspect from the polymerization process, reducing overall process complexity.
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
These methods enable the production of polymers with high biocontent, enhancing the sustainability of sulfur- and phosphorus-containing polymers by utilizing renewable sources and improving the synthesis efficiency, making them suitable for various industrial applications such as textiles, automotive components, and coatings.
Implementation Method 1
combining a beta-lactone with a dithionite compound to produce a sulfonyl-dialkanoic acid
Implementation Method 2
combining the sulfonyl-dialkanoic acid with a diol compound to produce the polymer by condensation polymerization
Implementation Method 3
combining a beta-lactone with (i) hydrogen sulfide or a salt thereof, or (ii) a thiol compound to produce a sulfur-containing alkanoic acid
Implementation Method 4
polymerizing the sulfur-containing alkanoic acid to produce the sulfur-containing polymer
Implementation Method 5
combining a beta-lactone with a diol compound to produce an alkanoate compound having two terminal hydroxy groups
Implementation Method 6
combining the alkanoate compound with a phosphanediamine or phosphanetriamine compound to produce the phosphorus-containing polyester
Data Source
AI summary
Provided are methods of producing sulfur- and phosphorus-containing polymers from beta-lactones. The sulfur- and phosphorus-containing polymers include bio-based sulfur- and phosphorus-containing polymers that may be obtained from renewable sources.