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公开(公告)号：US12132176B2
公开(公告)日：2024-10-29
申请号：US17500077
申请日：2021-10-13
Inventor： Lauren Elizabeth Marbella , Amrita Sarkar , Richard May
CPC classification number: H01M10/4242 , B29B17/02 , C08J11/28 , H01M4/623 , B29B2017/0244 , B29B2017/0289 , B29B2017/0293 , C08J2327/16
Abstract: Materials such as poly(vinylidene fluoride) (PVDF) and lithium cobalt (III) oxide (LCO) are recovered and recycled from cathode films isolated from end-of-life batteries, including lithium-ion batteries. Cathode films are immersed in solution including N,N-dimethylformamide (DMF), N-methyl-2-pyrrolidine (NMP), a tetrahydrofuran (THF):NMP mixture, or a THF:DMF mixture. The solution is able to dissolve PVDF, which can then be separated from LCO and a conductive substrate component of the cathode films via alumina column separation. A PVDF product can be precipitated and recovered, while the LCO and conductive substrate can be recovered directly from the alumina column separator. Both the PVDF and LCO are of suitable quality for use in new cathode films. Such recovery is shown to be achievable even at low solid to liquid ratio during the dissolution process. Thus, economically feasible solvent-based recycling of battery cathodes is enabled to prolong the service life of cathode materials and reduce polymeric waste.
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公开(公告)号：US20240309145A1
公开(公告)日：2024-09-19
申请号：US18575870
申请日：2022-06-28
Applicant: Evonik Operations GmbH
Inventor： Annegret Terheiden , Jens Hildebrand , Natalia Hinrichs-Tontrup , Daniela Hermann
CPC classification number: C08G18/4829 , C08G18/165 , C08G18/18 , C08G18/1825 , C08G18/244 , C08G18/7621 , C08J11/28 , C08L75/08 , C08G2110/0008 , C08G2110/005 , C08G2110/0058 , C08G2110/0066 , C08G2110/0083 , C08J2375/08 , C08L2201/08 , C08L2203/14
Abstract: A process for producing PU foams, preferably flexible PU foams, can be performed by reacting at least one polyol component, comprising a recycled polyol, with at least one isocyanate component in the presence of one or more catalysts that catalyse the isocyanate-polyol and/or isocyanate-water reactions and/or isocyanate trimerization. The recycled polyol is obtained by hydrolysis of a polyurethane, by contacting said polyurethane with water in the presence of a specific base-catalyst-combination.
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公开(公告)号：US20240228737A1
公开(公告)日：2024-07-11
申请号：US18559068
申请日：2022-05-10
Applicant: Research Triangle Institute
Inventor： Ofei D. MANTE , Dennis GILMORE
CPC classification number: C08J11/28 , C08J11/16 , C08J2377/00
Abstract: A process for depolymerizing a polymer comprises reacting the polymer with a nitrogen-containing compound in the presence of a catalyst whereby the polymer is depolymerized into one or more monomers. The catalyst comprises carbonate and an element in group 1 or group 2 of the periodic table. The nitrogen-containing compound comprises ammonia, an amine reagent, or a combination of ammonia and an amine reagent. The polymer comprises polyamide, polyester, polycarbonate, polyurethane, polybutylene terephthalate (PBT), polyethylene terephthalate (PET), lignocellulosic material, or combinations thereof.
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公开(公告)号：US20240132806A1
公开(公告)日：2024-04-25
申请号：US18037680
申请日：2022-09-13
Applicant: NISSAN CHEMICAL CORPORATION
Inventor： Masafumi YAGYU , Takahisa OKUNO , Tetsuya SHINJO
IPC: C11D3/32 , C08J11/28 , C09J7/38 , C09J183/04 , C11D3/20 , C11D3/30 , C11D3/43 , C11D11/00 , H01L21/02 , H01L21/304 , H01L21/683
CPC classification number: C11D3/32 , C08J11/28 , C09J7/38 , C09J183/04 , C11D3/2068 , C11D3/2093 , C11D3/30 , C11D3/43 , C11D11/0047 , H01L21/02057 , H01L21/304 , H01L21/6835 , C08J2383/04 , C09J2301/502 , C09J2483/00
Abstract: A method for cleaning a semiconductor substrate includes peeling and dissolving an adhesive layer formed on a semiconductor substrate using a peeling and dissolving composition, in which the peeling and dissolving composition contains: a component [I]: a quaternary ammonium salt; a component [II]: an amide-based solvent; and a component [III]: a solvent represented by the following Formula (L):
L1-L3-L2 (L)
where L1 and L2 each independently represents an alkyl group having 2 to 5 carbon atoms, and L3 represents O or S.-
公开(公告)号：US20240059858A1
公开(公告)日：2024-02-22
申请号：US17892573
申请日：2022-08-22
Applicant: Wisconsin Alumni Research Foundation
Inventor： George Huber , Zhuo Xu , Kevin Sanchez-Rivera , Ezra Bar-Ziv , Shreyas Kolapkar , Victor Ierulli
Abstract: A system to carry out solvent targeted recovery and precipitation (STRAP) to recover individual polymers from multilayer plastic films or mixed plastic wastes, comprising a down-sizing device to shred the plastic wastes into particles with a size and aspect ratio to be flowable; a feeder that conveys the plastic particles in a constant flow without bridging; a dissolution vessel to selectively dissolve an individual polymer component in a solvent; a high temperature filter to separate the dissolved polymer component from the undissolved plastics; a precipitator to precipitate the dissolved polymer component; a low temperature filter to separate the precipitated polymer component from the solvent; and a distillation unit to purify the recycled solvent. The unique design of the feeder and the dissolution vessels allows the system to run in a semi-continuous mode.
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Patent Agency Ranking
公开(公告)号：US20240043604A1
公开(公告)日：2024-02-08
申请号：US18266442
申请日：2021-11-18
Applicant: Huntsman International LLC
Inventor： Leema Joseph
CPC classification number: C08G18/4833 , C08J11/28 , C08J2375/08
Abstract: The present invention relates to a method for reducing the acid value in a provided polyol to obtain an upgraded stabilized polyol composition, said method comprising following process steps:
Solubilizing ammonia in a distillable alcohol having a boiling point lower than 200° C. with formation of an ammoniated distillable alcohol;
Providing a polyol having a predefined acid value;
Chemically reacting the ammoniated distillable alcohol with the provided polyol;
Removing the distillable alcohol by distillation at a temperature comprised between 120 and 220° C.; and
Obtaining an upgraded stabilized polyol composition having an acid value lower than the predefined acid value of said provided polyol.-
公开(公告)号：US20230174737A1
公开(公告)日：2023-06-08
申请号：US17951149
申请日：2022-09-23
Applicant: Yuh-Jye UANG , Shu-Hue SHAO , FENGDA COMPOSITE MATERIALS CO., LTD.
Inventor： Yuh-Jye UANG
IPC: C08J11/22 , C08J11/28 , C09J129/14 , C09J175/04
CPC classification number: C08J11/22 , C08J11/28 , C09J129/14 , C09J175/04 , C08J2329/14
Abstract: Provided are a reprocessed material of recycled polyvinyl butyral and the method for producing the same. The method comprises steps (A) and (B); step (A): heating a first mixture comprising recycled polyvinyl butyral and an antiblocking agent; and step (B): adding a free radical initiator into the first mixture to undergo a reaction to obtain the reprocessed material of recycled polyvinyl butyral; wherein the free radical initiator comprises an azo compound, an organic peroxide or a combination thereof; the reprocessed material of recycled polyvinyl butyral has a MI of greater than 7 g/10 min at 190° C. and under 2.16 kg of load. The reprocessed material of recycled polyvinyl butyral has excellent reprocessability, so it is applicable to make a hot adhesive and a composite material film.
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公开(公告)号：US20180355142A1
公开(公告)日：2018-12-13
申请号：US16004169
申请日：2018-06-08
Applicant: WASHINGTON STATE UNIVERSITY
Inventor： Jinwen Zhang , Tuan Liu , Junna Xin
CPC classification number: C08J11/26 , C08J11/16 , C08J11/28 , C08J2363/00
Abstract: The subject matter disclosed herein is generally directed to methods of recycling epoxy polymers using organic salts as catalysts in an aqueous solution. Epoxy polymers and their composites are widely used in many fields such as coatings, adhesives, wind blades, automobiles, aeronautic vehicles, and sporting goods. However, the management of thermoset composite wastes is becoming a public concern as the out of service thermoset products build up. With the increasing awareness of environmental protection and the depleting of landfill sites, it is of great importance to develop an economically viable and environmentally-friendly recycling technology of thermoset materials that is suitable to industrial scale-up production. As such, there is a clear and present need for a novel solution that is environmentally friendly and scalable in the market.
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公开(公告)号：US20180037710A1
公开(公告)日：2018-02-08
申请号：US15539539
申请日：2015-12-23
Applicant: Ioniqa Technologies B.V.
Inventor： Tonnis Hooghoudt , Vincent Pilippi , Marcel Vilaplana Artigas
CPC classification number: C08J11/28 , C08J11/04 , C08J11/16 , C08J11/24 , C08J2367/02 , Y02W30/705 , Y02W30/706
Abstract: The present invention is in the field of a method of degrading a polymer into oligomers and/or monomers in a solvent, using a catalyst, and a functionalized magnetic particle comprising a catalyst being capable of degrading the polymer into oligomers and/or monomers. The present method and particle provide a high selectivity and a high conversion ratio.
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10.发明授权公开(公告)号：US09605127B2
公开(公告)日：2017-03-28
申请号：US14441335
申请日：2012-11-14
Applicant: PRYSMIAN S.P.A.
Inventor： Franco Galletti , Vito Scrima
CPC classification number: C08J11/28 , C08J11/06 , C08J2315/00 , C08J2323/08 , C08J2323/16 , C08K5/005 , C08K5/14 , C08L2207/20 , H01B3/441 , H01B7/0045 , H01B7/17 , Y02W30/701
Abstract: A process for recovering wastes of a polymeric composition including at least one peroxide-curable polymer and at least one peroxidic crosslinking agent, which includes compounding the wastes with at least one antioxidant agent suitable for sulfur-vulcanized elastomeric compositions, at a temperature lower than the decomposition temperature of the at least one peroxide crosslinking agent. The compounding of the polymeric wastes with the antioxidant agent is carried out at a temperature lower than the decomposition temperature of the peroxide crosslinking agent, so as to avoid any premature activation of the crosslinking agent. The process is particularly suitable for compositions based on elastomeric polyolefins, more preferably for elastomeric ethylene copolymers such as ethylene-propylene copolymers (EPR) and ethylene-propylene-diene terpolymers (EPDM), which can be processed at relatively low temperatures, much lower than the decomposition temperatures of the most common peroxide crosslinking agents.
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