公开(公告)号：US20220118464A1

公开(公告)日：2022-04-21

申请号：US17427254

申请日：2020-01-31

申请人： SOLVAY SPECIALTY POLYMERS USA, LLC

发明人： Matthew BOOHER ,  Joel POLLINO ,  Keshav S. GAUTAM

IPC分类号： B03D1/016 ,  B03D1/004 ,  C08J11/08 ,  B03D1/10 ,  B29B17/02 ,  B29K71/00 ,  B29K77/00 ,  B29K81/00

摘要： The invention pertains to a process for separating mixtures of solids based on their densities. The present invention also relates to the use of a separating liquid (L) for separating plastic solids from metal-containing solids based on their densities, wherein the separating liquid (L) has a density d3 such that 1.5

公开(公告)号：US20220073696A1

公开(公告)日：2022-03-10

申请号：US17353395

申请日：2021-06-21

申请人： POLYSTYVERT INC.

发明人： Roland CÔTÉ

IPC分类号： C08J11/08 ,  B29B17/02 ,  C08F112/08 ,  C08L25/06

摘要： There are provided recycled polystyrene polymers having a melt flow index of less than about 25 g/10 min. There are provided processes for recycling polystyrene waste. The processes can comprise dissolving said polystyrene waste in p-cymene under conditions to obtain a polystyrene/p-cymene mixture, adding the polystyrene/p-cymene mixture to a hydrocarbon polystyrene non-solvent under conditions to obtain precipitated polystyrene and washing the precipitated polystyrene with additional portions of hydrocarbon polystyrene non-solvent under conditions to obtain twice-washed polystyrene. The twice-washed polystyrene can optionally be dried and formed into polystyrene pellets. There is also provided recycled polystyrene obtained from such processes for recycling polystyrene waste.

公开(公告)号：US20220002472A1

公开(公告)日：2022-01-06

申请号：US17294244

申请日：2019-11-20

申请人： The Regents of the University of California

发明人： Mahdi M. Abu-Omar ,  Shou Zhao

IPC分类号： C08G59/32 ,  C08J11/08 ,  C08G59/28

摘要： A thermoset precursor composition includes a backbone comprising an imine bond bonding at least one of: 1) aromatic compounds together, or 2) bonding an aromatic compound to an aliphatic chain, and at least one of: an epoxy group terminating the backbone or an aldehyde group terminating the backbone. The thermoset precursor can have at least two epoxy groups, one epoxy group and one aldehyde group, or two aldehyde groups.

公开(公告)号：US20210388171A1

公开(公告)日：2021-12-16

申请号：US17307898

申请日：2021-05-04

申请人： Board of Regents, the University of Texas System

发明人： Karen LOZANO ,  Luis SOSA ,  Adonica DE LOS SANTOS ,  Salomon LUNA ,  Jared SOLIS

IPC分类号： C08J11/08 ,  B09B3/00 ,  B01D11/02 ,  B02C18/08

摘要： System and methods for recycling a material comprising a polymer in an expanded state is disclosed. The system can include a shredder, a heating chamber operatively connected to the shredder, a condenser operatively connected to the heating chamber, a solvent tank operatively connected to the condenser, and a circulation unit operatively connected to the solvent tank and the heating chamber.

公开(公告)号：US11142626B2

公开(公告)日：2021-10-12

申请号：US16660189

申请日：2019-10-22

申请人： Vartega Inc.

发明人： Andrew T. Maxey

IPC分类号： C08J11/08 ,  B29B17/02 ,  B29B17/04 ,  B29K307/04 ,  B29K105/08

摘要： Processing fiber-reinforced composite to recover reinforcing fibers includes first treating the composite with a normally-liquid first solvent for material of the matrix followed by second treating of solid residue including reinforcing fibers from the first treating with a normally-gaseous material contacted with the solid residue under conditions of temperature and pressure at which the normally-gaseous material is in a liquid or supercritical fluid form. Treating a crude product including released reinforcing fibers and residual material of the matrix and/or fiber sizing includes first converting a normally-gaseous substance from a fluid form to a solid form and thereafter second converting the solid form to a gaseous form, to assist dislodgment of such residual material.

公开(公告)号：US11034817B2

公开(公告)日：2021-06-15

申请号：US15747736

申请日：2016-07-27

申请人： EVRNU, SPC

发明人： Stacy Flynn ,  Christopher Stanev

IPC分类号： C08J11/10 ,  C08J11/08 ,  D01F11/08 ,  D01F11/02 ,  D21C5/00 ,  D21C3/20 ,  C08J11/16 ,  D21C3/22 ,  D21C9/00 ,  D21C1/02 ,  D21C9/10 ,  C08J11/18 ,  D21B1/02 ,  B29C48/285 ,  D01F6/62 ,  D01F2/04 ,  D01F2/00

摘要： Methods and systems of the present invention use mixed textile feedstock, which may include post-consumer waste garments, scrap fabric and/or other textile materials as a raw feed material to produce isolated cellulose and other isolated molecules having desirable properties that can be used and be used in the textile and apparel industries, and in other industries. A multi-stage process is provided, in which mixed textile feed material is subjected to one or more pretreatment stages, followed by at least two pulping treatments for isolating cellulose molecules and other molecular constituents, such as polyester. The isolated cellulose and polyester molecules may be used in a variety of downstream applications. In one application, isolated cellulose and polyester molecules are extruded to provide regenerated cellulose fibers and regenerated polyester fibers having desirable (and selectable) properties that are usable in various industrial applications, including textile production.

公开(公告)号：US11028248B2

公开(公告)日：2021-06-08

申请号：US16462170

申请日：2017-11-09

申请人： ALPLA WERKE ALWIN LEHNER GMBH & CO. KG

发明人： Robert Siegl ,  Andreas Weber

IPC分类号： C08J11/08 ,  B29B17/02 ,  B29K105/26 ,  A61L11/00 ,  A61L2/00

摘要： The invention relates to a recycling process for contaminated polyolefins, in particular HDPE, wherein the contaminated polyolefin is swelled using a solvent such that contaminants in the polyolefin dissolve in the solvent, and the solvent as well as the contaminants dissolved from the solvent are removed from the polyolefin.

公开(公告)号：US20210130568A1

公开(公告)日：2021-05-06

申请号：US16474849

申请日：2017-12-12

申请人： SABIC GLOBAL TECHNOLOGIES B.V.

发明人： Diego Mauricio Castaneda Zuniga ,  Jerome Vachon ,  Jan Nicolaas Eddy Duchateau ,  Peter Neuteboom ,  Zeljko Knez

IPC分类号： C08J11/08 ,  B29B17/02

摘要： The present invention relates to a process for recycling polyolefin, comprising the steps of: 1) feeding a solid post-consumer polyolefin composition comprising polyolefin and contaminants and a flow of an extraction fluid to an extractor having a pressure of 100-1000 bar and a temperature of 20-80° C. to obtain a solid extracted composition, 2) melting the solid extracted composition to obtain a melted composition, 3) providing particles from the melted composition by: 3a) mixing a flow of a supercritical fluid in the melted composition in a pressure vessel to obtain a solution saturated with the supercritical fluid and 3b) passing the solution from the pressure vessel through a throttling device to a spraying tower to expand the solution to obtain polyolefin particles in the spraying tower.

公开(公告)号：US10954418B2

公开(公告)日：2021-03-23

申请号：US15100371

申请日：2014-11-25

申请人： 3M INNOVATIVE PROPERTIES COMPANY

发明人： Audrey A. Sherman ,  Margot A. Branigan ,  Craig E. Hamer ,  Ross E. Behling ,  Thomas E. Augustine ,  Karl E. Benson

IPC分类号： C09J133/14 ,  C09J133/06 ,  C09J4/06 ,  C08F220/18 ,  C23C14/02 ,  C08J11/08 ,  C08L33/02 ,  C09J7/38

摘要： Optically clear adhesive compositions contain an elastomeric polymer and a low molecular weight polymeric additive. The elastomeric polymer and the low molecular weight polymeric additive form an acid-base interaction. The refractive index of the adhesive composition is higher than the refractive index of the elastomeric polymer. The adhesive composition may also contain additional domains of liquids, polymers, additives or particles that have a higher refractive index than the elastomeric polymer.

公开(公告)号：US10774193B2

公开(公告)日：2020-09-15

申请号：US16368893

申请日：2019-03-29

申请人： Nano and Advanced Materials Institute Limited

发明人： Kai Li ,  Tik Ho Lau ,  Ho Yin Fong

IPC分类号： C08J11/08

摘要： The present invention relates to a method of continuously recycling thermoset plastic waste. The method includes crushing the thermoset plastic waste into pieces with a diameter size suitable for being fed into an extruder. The method also includes purifying the thermoset plastic waste by cleaning the thermoset plastic waste using a cleaning agent to remove contaminants from the thermoset plastic waste. The method also includes extruding the thermoset plastic waste by using supercritical solvent.