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公开(公告)号：US11629364B2
公开(公告)日：2023-04-18
申请号：US17894924
申请日：2022-08-24
申请人： OPTIMVIA, LLC
摘要： The present invention includes methods for preparing anticoagulant polysaccharides using several non-naturally occurring, engineered sulfotransferase enzymes that are designed to react with aryl sulfate compounds instead of the natural substrate, PAPS, to facilitate sulfo group transfer to polysaccharide sulfo group acceptors. Suitable aryl sulfate compounds include, but are not limited to, p-nitrophenyl sulfate or 4-nitrocatechol sulfate. Anticoagulant polysaccharides produced by methods of the present invention comprise N-, 3-O-, 6-O-sulfated glucosamine residues and 2-O sulfated hexuronic acid residues, have comparable anticoagulant activity compared to commercially-available anticoagulant polysaccharides, and can be utilized to form truncated anticoagulant polysaccharides having a reduced molecular weight.
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公开(公告)号：US11608422B2
公开(公告)日：2023-03-21
申请号：US17196885
申请日：2021-03-09
摘要： A white polyester film and a method for manufacturing the same are provided. The white polyester film includes a physically recycled polyester resin and a chemically recycled polyester resin. The physically recycled polyester resin is formed by a plurality of physically recycled polyester chips. The chemically recycled polyester resin is formed by a plurality of chemically recycled polyester chips and mixed with the physically recycled polyester resin. The plurality of chemically recycled polyester chips further include chemically recycled electrostatic pinning polyester chips. The chemically recycled electrostatic pinning polyester chips contain electrostatic pinning additives, and the electrostatic pinning additives are metal salts. Expressed in percent by weight based on a total weight of the polyester film, a content of the electrostatic pinning additives in the polyester film is between 0.005% and 0.1% by weight. The polyester film further includes a white additive.
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公开(公告)号：US20230050126A1
公开(公告)日：2023-02-16
申请号：US17845636
申请日：2022-06-21
发明人： HARILAOS MAVRIDIS , MICK C. HUNDLEY , SAMEER D. MEHTA , MARCO CONSALVI , GERHARDUS MEIER , LINDSAY CORCORAN
摘要： Methods for processing polyolefin recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. polyolefin recyclate feedstocks can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed polyolefin recyclates. Processed polyolefin recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both polyolefin recyclate and/or pre-consumer polyolefins.
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公开(公告)号：US20230034354A1
公开(公告)日：2023-02-02
申请号：US17786588
申请日：2020-12-18
申请人： CARBIOS
发明人： MICHEL CHATEAU
摘要： The present invention relates to a foamed plastic composition comprising at least one polymer and at least one active agent, wherein said foamed plastic composition is at least partially coated with the active agent.
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公开(公告)号：US20230024305A1
公开(公告)日：2023-01-26
申请号：US17954092
申请日：2022-09-27
IPC分类号： C08J11/10
摘要： To provide a polyester recycling system including: a functional layer removing means of removing a functional layer from a laminated polyester film including a polyester film having on a surface thereof the functional layer as a recovered waste material, with a cleaning agent dissolving the polyester film; a recovery means of recovering the polyester film, from which the functional layer has been removed; and a production means of producing a recycled polyester product with the recovered polyester film as a raw material.
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公开(公告)号：US20220315726A1
公开(公告)日：2022-10-06
申请号：US17838191
申请日：2022-06-11
发明人： Domenic Di Mondo , Irina Fenton
IPC分类号： C08J11/10 , C08F110/06
摘要： Polymers are created via the depolymerization of a polypropylene feedstock. The polymers can be modified/grafted with maleic anhydride. In some embodiments the polypropylene feedstock contains recycled or discarded polypropylene. In some embodiments, the polymers contain olefins within the polymer backbone, and/or a suspension of iron, titanium, and/or zinc.
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公开(公告)号：US20220315725A1
公开(公告)日：2022-10-06
申请号：US17626343
申请日：2020-09-25
发明人： Florinda Martena
摘要： The invention provides an apparatus for de-vulcanisation of rubber from a rubber component, preferably a rubber tire. The apparatus comprises a cleaning device configured to clean and/or sanitize the rubber and a mixing device having at least one rotor configured to de-vulcanise the cleaned and/or sanitized rubber.
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公开(公告)号：US20220282232A1
公开(公告)日：2022-09-08
申请号：US17625782
申请日：2020-07-10
申请人： CARBIOS
发明人： VINCENT TOURNIER
摘要： The present invention relates to novel esterases, more particularly to esterase variants having improved activity and/or improved themostability compared to the esterase of SEQ ID NO: 1 and the uses thereof for degrading polyester containing material, such as plastic products. The esterases of the invention are particularly suited to degrade polyethylene terephthalate, and material containing polyethylene terephthalate.
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公开(公告)号：US20220243032A1
公开(公告)日：2022-08-04
申请号：US17408507
申请日：2021-08-23
摘要： A polyester film and a method for producing the same are provided. The polyester film includes a physically recycled polyester resin and a chemically recycled polyester resin. The physically recycled polyester resin is formed of physically recycled polyester chips, and the physically recycled polyester chips have a first intrinsic viscosity. The chemically recycled polyester resin is formed of chemically recycled polyester chips, and the chemically recycled polyester chips have a second intrinsic viscosity. The second intrinsic viscosity is less than the first intrinsic viscosity. The physically recycled polyester chips and the chemically recycled polyester chips are mixed with each other and melt extruded according to a predetermined intrinsic viscosity, so that the polyester film has the predetermined intrinsic viscosity.
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公开(公告)号：US20220243029A1
公开(公告)日：2022-08-04
申请号：US17400146
申请日：2021-08-12
摘要： A black polyester film and a method for manufacturing the same are provided. The method for manufacturing the black polyester film includes: providing a recycled polyester material; physically regenerating a part of the recycled polyester material to form physically regenerated polyester chips having a first intrinsic viscosity; chemically regenerating another part of the recycled polyester material to form chemically regenerated polyester chips having a second intrinsic viscosity lower than the first intrinsic viscosity; mixing black regenerated polyester chips, the physically regenerated polyester chips, and the chemically regenerated polyester chips according to a predetermined intrinsic viscosity so as to form a polyester chip raw material; melting and then extruding the polyester chips raw material to form the black polyester film having the predetermined intrinsic viscosity.
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