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Recyclable Biopolymers from Chemical Ring-Opening Polymerization of Five-Membered Heterocyclic Monomers by Basic Catalysts
Recyclable Biopolymers from Chemical Ring-Opening Polymerization of Five-Membered Heterocyclic Monomers by Basic CatalystsAt a Glance: The invention is the first effective organopolymerization of the biorenewable “non-polymerizable” gamma-butyrolactone (γ-BL) to high-molecular-weight metal-free recyclable polyester.The chemical synthesis...
Published: 4/4/2019
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Inventor(s): Eugene Chen, Miao Hong
Keywords(s):
Category(s): Chemicals & Materials, Energy & Natural Resources
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Chemical Synthesis of Poly(3-hydroxybutyrate) from Bio-Sourced Cyclic Diolides
At a Glance: The invention is a new chemical synthesis route to poly(3-hydroxybutyrate) from bio-sourced cyclic diolides Advantages include high isotacticity and molecular weight Commercial applications include biomaterials, biomedical applications, biodegradable polyester and biodegradable thermoplasticsBackground: Poly(hydroxyalkanoate)s (PHAs), naturally...
Published: 4/4/2019
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Inventor(s): Eugene Chen, Xiaoyan Tang
Keywords(s):
Category(s): Chemicals & Materials
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Recyclable and Robust Polyesters and Stereocomplexes Based on Ring-Fused γ-Butyrolactones
Plastics which can be Chemically Recycled Completely and Infinitely Inventors: Eugene Chen and Jian Bo-ZhuPatent status: Provisional Patent filed, pending conversionSummaryPetroleum-derived plastics are major pollutants and diminish our natural resources, while biomass-derived, industrially-compostable plastics are unable to be effectively recycled....
Published: 4/4/2019
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Inventor(s): Eugene Chen, Jian-Bo Zhu
Keywords(s):
Category(s): Chemicals & Materials
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Fully Recyclable, Unsaturated Polyesters from Biomass via High Yield, Catalytic Polymerization Reaction
A new polymerization method that produces polyesters from bioderivable starting materials. The polyesters are unsaturated and may easily be further functionalized post-polymerization through cross-linking or other reactions with the unreacted vinyl group. Possible applications in biomedical, biodegradable polyesters, and thermally recyclable plastics...
Published: 11/8/2018
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Inventor(s): Eugene Chen, Xiaoyan Tang, Miao Hong
Keywords(s):
Category(s): Chemicals & Materials, Energy & Natural Resources
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Metal-free Catalytic Reactions to Improve Industrial Production of Isotactic PolyLactide (PLA)
Two novel reactions that, when paired, yield an effective, metal-free, one-pot process to produce isotactic poly(L-lactide) from the meso-lactide waste product of conventional poly(lactide), or PLA, production. May be utilized to either improve i-PLLA yield or to produce value-added side product (racemic mixture of L- and D- lactide).At a Glance: The...
Published: 4/4/2019
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Inventor(s): Eugene Chen, Jian-Bo Zhu
Keywords(s):
Category(s): Chemicals & Materials, Energy & Natural Resources
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Recyclable, Biodegradable Biopolymers from gamma-Butyrolactone via High Yield, Catalytic Polymerization Reaction
Recyclable Biopolymers from Chemical Ring-Opening Polymerization At a Glance:The invention comprises ring-opening polymerization methods and recyclable biorenewable polyesters The chemical synthesis of poly(γ-butyrolactone) (PγBL), a highly useful biomaterial, offers a significant economic advantage because it is inexpensive to create Commercial...
Published: 4/4/2019
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Inventor(s): Eugene Chen, Miao Hong
Keywords(s):
Category(s): Chemicals & Materials, Energy & Natural Resources
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Catalytic Conversion of Biomass-derived Feedstock (HMF) into Value Added Chemicals and Biofuels
A catalytic reaction system by which the biomass-derived feedstock chemical HMF can be upgraded into a higher carbon content intermediate compound. Further processing steps can convert the intermediate into jet and diesel fuels or into value added specialty compounds.At a GlanceCatalytic reaction system that upgrades 6-carbon compounds from biomass...
Published: 11/8/2018
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Inventor(s): Eugene Chen, Dajiang Liu
Keywords(s):
Category(s): Energy & Natural Resources, Chemicals & Materials
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High-Speed, Stereoselective Polymerization for Renewable, Bio-derived Plastics
A rapid, selective catalytic system to produce vinyl plastics from renewable biomass. The resulting polymers offer cost and performance advantages over petroleum-based polyacrylics such as pMMA and are ideally suited for a wide variety of applications, including optical fibers and heat/solvent resistant plastics.At a GlanceRapid, selective catalytic...
Published: 11/8/2018
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Inventor(s): Eugene Chen, Yangjian Hu
Keywords(s):
Category(s): Chemicals & Materials, Energy & Natural Resources
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