Abstract: The present invention provides methods for reducing extractables from plastic articles made from recycled plastic. The method includes the steps of: (a) providing a plastic article in a chamber; and (b) providing a fluorination gas in the chamber, thereby exposing the plastic article to the fluorination gas. The method results in the reduction of the extractables from the plastic article.
Abstract: Disclosed is a preparation method of polybutylene adipate terephthalate (PBAT)-polylactic acid (PLA) blend films modified by an epoxidized cardanol-based chain extender, belonging to the technical field of biodegradable film processing. The modified PBAT-PLA blend films include raw materials in parts by weight of 80-85 parts of PBAT, 15-20 parts of PLA, and 0.5-1.5 parts of the epoxidized chain extender, where the epoxidized chain extender is an epoxidized cardanol-based chain extender. The preparation method includes the following steps: mixing PBAT, PLA and the epoxidized chain extender, and performing melting, extruding and granulating to obtain a blends masterbatch, then extrusion blowing the blends masterbatch into a film to obtain the PBAT-PLA blend film modified by the epoxidized cardanol-based chain extender.
Type:
Grant
Filed:
May 19, 2023
Date of Patent:
October 10, 2023
Assignee:
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
Inventors:
Caili Zhang, Yunxuan Weng, Yang Yang, Xiaoqian Diao, Xinyu Song
Abstract: The present invention relates to a kind of organic metal-free catalysts containing both electrophilic and nucleophilic dual-functions, preparation methods of making the same, and uses thereof. The organic metal-free catalysts in the present invention have the chemical structure shown in formula (I): Compared with the metal-free organic polymerization catalytic systems that have been reported before, the organic metal-free catalysts in this invention have the combined advantages of simple preparation, high reactivity, easy operation, low cost, wide applicability, easy for industrial production.
Abstract: Provided is a method of producing a film by cryogenically grinding polypropiolactone to form a powder, and extruding the powder to form the film. Provided herein are also polypropiolactone films having certain biocontent and compostability, as well as certain mechanical and physical properties. Such films may also be suitable for use as packaging materials.
Abstract: Disclosed are co-continuous immiscible polymer blends of a polysulfone and a polyaryletherketone optionally reinforced with carbon fiber. A method of preparing such a co-continuous immiscible polymer blend of a polysulfone and a polyaryletherketone reinforced with a carbon fiber is also disclosed.
Type:
Grant
Filed:
May 6, 2020
Date of Patent:
September 26, 2023
Assignee:
RUTGERS, THE STATE UNIVERSITY OF NEW JERSEY
Inventors:
Jennifer K. Lynch-Branzoi, Thomas J. Nosker, Justin W. Hendrix, Arya S. Tewatia
Abstract: Methods of depolymerizing polyolefin-based material into useful petrochemical products using supported metal oxides and heat are described. The supported metal oxides improve the depolymerization reaction by decreasing the half time for the depolymerization, which results in a higher depolymerization rate and a shorter residence time in the depolymerization unit, allowing for a predictable depolymerization reaction, and decreasing the branching or aromatic formations in the product.
Type:
Grant
Filed:
October 29, 2021
Date of Patent:
September 26, 2023
Assignee:
Basell Poliolefine Italia S.r.l.
Inventors:
Sandor Nagy, Daniel F. White, Christopher D. Smith, Xueyong Yang, David L. Ramage
Abstract: A coating created entirely from plant-derived ingredients is disclosed. Illustrative embodiments of the coating may be particularly well suited for use on leather-like materials created from epoxidized natural rubber-based formulations. Illustrative embodiments of the coating created may be comprised of substantially the reaction product between epoxidized vegetable oil and a polyfunctional naturally occurring acid (such as citric acid). Illustrative embodiments this reaction product may be used to produce porosity-free castable resins and vulcanize rubber formulations based on epoxidized natural rubber. Materials made from disclosed materials may be advantageously used as leather substitutes.
Type:
Grant
Filed:
January 21, 2021
Date of Patent:
September 19, 2023
Assignee:
Natural Fiber Welding, Inc.
Inventors:
Aaron Kenneth Amstutz, Luke Michael Haverhals, Albert C Pierz, Ian T Pierz, Nima Ezatollah Amini, Skylar Clement
Abstract: A dynamic process for upcycling polymers. Polymers from a diverse post-consumer waste stream are gathered in a mixture. The mixture is extruded and combined with a liquid additive containing a particular PE wax at the verge of polymerization. The liquid additive is repolymerized into LDPE to form pellets. The pellets are delivered into a reactor and submerged in a suitable solvent to dissolve the LDPE. Causing a gradual and orderly separation of the remaining polymers from one another, resulting in a layered substrate. The suitable solvent, enzymes or depolymerizing compatible chemical is delivered into the reactor through independent pipes attached to tanks containing the suitable depolymerizing agent. The process repeats depolymerizing the layered substrate layer by layer with additional suitable solvents/enzymes or depolymerizing agents for each of the polymers resulting in the dissolving of the remaining polymers in an orderly manner producing a layered wax-like material for upcycling.
Abstract: A thermoset material containing ?-hydroxyesters wherein said thermoset material is subject to a mechano-chemical process to regenerate an epoxide and a carboxylic acid functionality. A curative for epoxidized plant-based oils and epoxidized natural rubber is created from the reaction between a naturally occurring polyfunctional acid and an epoxidized plant-based oil is disclosed. The curative may be used to produce porosity-free castable resins and vulcanize rubber formulations based on epoxidized natural rubber. Materials made from disclosed materials may be advantageously used as leather substitutes.
Type:
Grant
Filed:
January 5, 2021
Date of Patent:
September 19, 2023
Assignee:
Natural Fiber Welding, Inc.
Inventors:
Aaron Kenneth Amstutz, Luke Michael Haverhals, Isaiah Amstutz, Skylar Clement, Peter Francis Walker
Abstract: Supported onium salts used as initiators for the synthesis of polycarbonates by copolymerization of carbon dioxide with epoxides are described. Embodiments of the present disclosure describe initiators comprising an insoluble portion including an onium cation attached to an insoluble support; and an anion, wherein the anion is a counter-ion to the onium cation. Embodiments further describe methods of making polycarbonates using the initiator, methods of making initiators, and the like.
Type:
Grant
Filed:
May 17, 2019
Date of Patent:
September 12, 2023
Assignee:
KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
Abstract: Poly(acrylic acid)-based superabsorbent polymer (SAP) in a feed stream is converted into poly(acrylic acid) (PAA) in an extensional flow device. The total energy used to degrade the SAP into PAA is less than about 50 MJ/kg SAP.
Type:
Grant
Filed:
June 8, 2021
Date of Patent:
September 5, 2023
Assignee:
The Procter & Gamble Company
Inventors:
Dimitris Ioannis Collias, John Andrew McDaniel, Gary Wayne Gilbertson, Martin Ian James, Arsen Arsenov Simonyan
Abstract: A resin composition and method for installing a pipe liner that allows the liner to be fully wet out with a resin and activator and stored for a period of up to six months prior to installation and curing. A method of lining a pipe with a delayed curing resin composition is also provided that includes fully wetting out a liner with a blended two part epoxy composition such that the liner can be transported in a wet out fashion, placed in a pipe to be lined and repositioned as needed without concern for the resin composition to begin curing.
Abstract: Provided is a resin composition containing: a thermoplastic resin having a polar group; and a heterocyclic compound containing two or more heteroatoms, wherein the resin composition exhibits a different behavior in elastic strength with a glass transition temperature as a boundary.
Abstract: Provided is a compound represented by General Formula (1) in General Formula (1), Ar1 and Ar2 independently represent a group selected from the following Formulae,
Type:
Grant
Filed:
July 27, 2021
Date of Patent:
September 5, 2023
Assignee:
MITSUI CHEMICALS, INC.
Inventors:
Shintaro Maekawa, Yoshiyuki Totani, Kosuke Mano
Abstract: The invention relates to medical aids, in particular compression products, such as compression stockings or bandages. More specifically, the invention relates to compression products comprising fibre forming polyurethane polymers showing a delayed continuous relaxation behaviour. The invention furthermore relates to polyurethane polymers containing N-diol and corresponding quaternised polyurethane polymers, to a process of producing the polyurethane polymers, to blends with elastane, as well as to uses.
Type:
Grant
Filed:
August 8, 2018
Date of Patent:
September 5, 2023
Assignee:
MEDI GMBH & CO. KG
Inventors:
Christa Huger, Angelika Scherm, Seema Agarwal, Andreas Greiner, Pin Hu
Abstract: A polyester carbonate resin is provided and includes a constituent unit represented by the following general formula (1), a constituent unit represented by the following general formula (2), and a constituent unit represented by the following general formula (3): wherein R represents hydrogen or an alkyl group containing 1 to 4 carbon atoms, wherein Q represents the following: wherein n and m each independently represent an integer of 0 to 5, and
Abstract: Provided is a polycarbonate resin composition, including: an aromatic polycarbonate resin (A); an alicyclic epoxy compound (B); a predetermined antioxidant (C); and a predetermined phosphorus compound (D), wherein, with respect to 100 parts by mass of the component (A), a content of the component (B) is 0.01 part by mass or more and 0.1 part by mass or less, a content of the component (C) is 0.01 part by mass or more and 0.1 part by mass or less, and a content of the component (D) is 0.01 part by mass or more and 0.05 part by mass or less.
Abstract: A depolymerizer is formed by grafting thiol groups on parts of the double bonds of a polymer of linear conjugated diene monomer. The linear conjugated diene monomer can be 1,3-butadiene, isoprene, 1,3-pentadiene, 2,3-dimethyl-1,3-butadiene, 2-methyl-1,3-pentadiene, 2,3-dimethyl-1,3-pentadiene, 2-phenyl-1,3-butadiene, or 4,5-diethyl-1,3-octadiene. The depolymerizer has a weight average molecular weight of 1000 to 400000.
Type:
Grant
Filed:
December 28, 2020
Date of Patent:
August 1, 2023
Assignee:
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventors:
Yi-Ting Wei, Jyh-Horng Wu, Yao-Zu Wu, Ming-Tsong Leu
Abstract: A multicomponent adhesive composition comprises a composition A and a composition B. Composition A comprises at least one silyl polymer comprising at least one hydrolyzable alkoxysilane group and at least one tackifying resin. Composition B comprises at least one catalyst and at least one compound C chosen from a compound C1 with a number-average molecular mass ranging from 300 g/mol to 500 000 g/mol; and a compound C2 with a vapor pressure at 20° C. of greater than or equal to 0.08 kPa; and mixtures thereof. The composition A:composition B mass ratio ranges from 99.98:0.02 to 60:40. The total content of catalyst ranges from 0.01% to 10% relative to the total weight of said adhesive composition.
Type:
Grant
Filed:
December 13, 2018
Date of Patent:
July 25, 2023
Assignee:
BOSTIK SA
Inventors:
Olivier Laferte, Claire Garnier, Régis Guillotte, Jean-Marie Bordat
Abstract: The present disclosure relates to combinations, build materials, and kits containing vinyl sulfonyl agents for thiol-ene polymerization. The present disclosure also relates to uses of the combinations, materials, and kits, e.g., in 3D printing.