Renewable Polyester Production from Natural Oils
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Solution Overview
Problem
Current polyester production from petroleum-derived monomers is energy-intensive, time-consuming, and depletes non-renewable resources, with limited options for polyesters exhibiting chemical and physical characteristics similar to commonly used polyesters from renewable sources.
Innovation Solution
Development of polyester polymers formed from monomers derived from natural oils, specifically through a reaction mixture comprising constitutional units with specific alkyl or oxyalkyl groups, allowing for the creation of highly branched, thermoplastic, and biodegradable polymers with improved properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polyesters are formed from petroleum-derived monomers through cracking and refining processes, then the polyesters can be produced with established industrial processes, but the processes become energy-intensive and time-intensive
Solution Approach 1:
The patent changes the fundamental parameter of feedstock source from petroleum to natural oils, and alters the chemical structure parameters by incorporating fatty acid chains with specific carbon lengths (C9-C22) and unsaturation levels. This enables production of polyesters with desirable properties while avoiding energy-intensive cracking and refining processes.
2Reliability
If polyesters are formed from petroleum-derived monomers through cracking and refining processes, then the polyesters can be produced with established industrial processes, but the processes become time-intensive
Solution Approach 1:
The patent changes the feedstock source from petroleum to natural oils and modifies the monomer structure to include fatty acid chains with specific properties. This enables more direct polymerization routes that reduce production time while maintaining process reliability through controlled polymerization conditions.
3Ease of manufacture
If polyesters are formed from petroleum-derived monomers, then the polyesters can be produced with current technology, but non-renewable sources of carbonaceous material are depleted
Solution Approach 1:
The patent uses natural oils as a universal feedstock that can produce multiple polyester variants by selecting different oil sources (vegetable oils, animal fats) and modifying polymerization conditions. This single feedstock replaces petroleum for producing diverse polyester materials with different properties.
Solution Approach 2:
The patent changes the carbon source parameter from non-renewable petroleum to renewable natural oils, while maintaining manufacturing feasibility through established polymerization techniques adapted to fatty acid-based monomers.
4Reliability
If PLA is used as a renewably derived polyester, then biodegradability is achieved, but resistance to degradation is lost and chemical and physical characteristics differ from commonly used polyesters
Solution Approach 1:
The patent applies local quality by controlling the degree of crystallinity, molecular weight, and fatty acid chain characteristics in specific regions of the polyester structure. This enables different segments of the polymer to exhibit different properties, balancing biodegradability with mechanical strength and chemical resistance.
Solution Approach 2:
The patent creates composite polyester structures by copolymerizing different fatty acid derivatives or blending with other biodegradable polymers, achieving a material that combines the biodegradability of PLA with the chemical and physical properties of conventional polyesters.
5Ease of manufacture
If natural oils are refined through metathesis to obtain compounds with carbon-chain lengths of about 9 to 15 carbon atoms, then compounds closer to desired chemical intermediates are obtained, but the refining process complexity increases
Solution Approach 1:
The patent changes the target carbon chain length parameter to match natural oil fatty acid chains (C9-C22), eliminating the need for complex metathesis processes to achieve desired chain lengths. Natural oils already provide fatty acids with suitable carbon chains for polyester synthesis.
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
This approach enables the production of polyesters with desirable chemical and physical characteristics while reducing reliance on petroleum-based materials, offering a more efficient and sustainable method for creating polymers with applications in various compositions, including coatings, personal care, and bioactive agent delivery.
Implementation Method 1
polyester polymers formed from monomers derived from natural oils, specifically through a reaction mixture comprising constitutional units
Data Source
Figure 1
AI summary
Polyester compositions are disclosed herein, as well as methods of making and using such polyesters. In some embodiments, the polyesters are formed from monomers derived from natural oils. In some embodiments, the polyesters are highly branched polymers, such as highly branched polymers that have low viscosity at higher molecular weights.