公开(公告)号：US11674012B2

公开(公告)日：2023-06-13

申请号：US17364984

申请日：2021-07-01

Applicant: The Procter & Gamble Company

Inventor： Dimitris Ioannis Collias ,  Amy Eichstadt Waun ,  James Carmony ,  John Moncrief Layman

IPC: C08J11/08

CPC classification number: C08J11/08 ,  C08J2323/06

Abstract: A method for purifying a contaminated reclaimed polyethylene is provided. The method comprises obtaining the contaminated reclaimed polyethylene, extracting it with a solvent to produce an extracted contaminated reclaimed polyethylene, and then dissolving it in the solvent to produce a first suspension comprising dissolved polyethylene and suspended contaminants. The first suspension is settled to produce a second suspension comprising dissolved polyethylene and suspended remaining contaminants, and the second suspension is purified by contacting it with solid media to produce a third suspension comprising purer polyethylene. Finally, the purer polyethylene is separated from the third suspension and it has virgin-like optical properties.

公开(公告)号：US11649336B2

公开(公告)日：2023-05-16

申请号：US17341476

申请日：2021-06-08

Applicant: The Procter & Gamble Company

Inventor： Dimitris Ioannis Collias ,  John Andrew McDaniel ,  Gary Wayne Gilbertson ,  Martin Ian James ,  Arsen Arsenov Simonyan ,  Jose Carlos Garcia-Garcia

IPC: C08J11/16 ,  C08J11/10

CPC classification number: C08J11/105 ,  C08J11/16 ,  C08J2333/08

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.

公开(公告)号：US11628379B2

公开(公告)日：2023-04-18

申请号：US17229903

申请日：2021-04-14

Applicant: The Procter & Gamble Company

Inventor： Norman Scott Broyles ,  Dimitris Ioannis Collias ,  Anthony Frederick Cappel

IPC: B08B3/04 ,  B01D11/02 ,  C08J11/08 ,  B29B17/00 ,  C08J7/02 ,  B29B17/02 ,  B29K105/26

Abstract: The present invention generally relates to a method of reducing contamination from plastics. The resulting purer plastic can be used in demanding applications.

公开(公告)号：US20220356322A1

公开(公告)日：2022-11-10

申请号：US17669443

申请日：2022-02-11

Applicant: The Procter & Gamble Company

Inventor： Dimitris Ioannis Collias ,  Amy Eichstadt Waun ,  John Moncrief Layman

IPC: C08J11/08 ,  B01D11/02 ,  B01D11/04 ,  B01D15/08 ,  B01D29/31

Abstract: A method of separating and purifying a mixed stream of contaminated reclaimed polyethylene and contaminated reclaimed polypropylene is provided. The method comprises the steps of extraction, dissolution, settling, purification, and solvent separation to produce separate streams of purified recycled polyethylene and purified recycled polypropylene. Both separate streams are produced in the same production plant operating in swing mode, and have virgin-like optical properties.

公开(公告)号：US20220117800A1

公开(公告)日：2022-04-21

申请号：US17498780

申请日：2021-10-12

Applicant: The Procter & Gamble Company

Inventor： Dimitris Ioannis Collias ,  Martin Ian James ,  Arsen Arsenov Simonyan

IPC: A61F13/15 ,  A61F13/551 ,  A61F13/84 ,  A61F13/53

Abstract: An AHP is disclosed having a topsheet, a backsheet joined with the topsheet, an absorbent core, disposed between the topsheet and the backsheet, and a poly(acrylic acid)-based superabsorbent polymer (SAP), partly derived from recycled resources. The SAP exhibits defined Saline Flow Conductivity and Absorption Against Pressure values. Methods for making the aforementioned AHP are also disclosed.

公开(公告)号：US11154839B2

公开(公告)日：2021-10-26

申请号：US16548873

申请日：2019-08-23

Applicant: The Procter & Gamble Company

Inventor： Dimitris Ioannis Collias ,  John Andrew McDaniel ,  Gary Wayne Gilbertson ,  Martin Ian James ,  Arsen Arsenov Simonyan

IPC: B01J20/34 ,  B01J20/26 ,  C08L33/02 ,  C08J11/16

Abstract: Poly(acrylic acid)-based superabsorbent polymer (SAP) in a feed stream is converted with UV irradiation into poly(acrylic acid) (PAA) in a flow system. The UV total energy used to convert SAP into PAA is less than about 50 MJ/kg SAP.

公开(公告)号：US20210324171A1

公开(公告)日：2021-10-21

申请号：US17229903

申请日：2021-04-14

Applicant: The Procter & Gamble Company

Inventor： Norman Scott Broyles ,  Dimitris Ioannis Collias ,  Anthony Frederick Cappel

IPC: C08J11/08

Abstract: The present invention generally relates to a method of reducing contamination from plastics. The resulting purer plastic can be used in demanding applications.

公开(公告)号：US11001693B2

公开(公告)日：2021-05-11

申请号：US16556270

申请日：2019-08-30

Applicant: The Procter & Gamble Company

Inventor： John Moncrief Layman ,  Dimitris Ioannis Collias ,  Hans Schonemann ,  Kara Williams

IPC: C08J11/08 ,  C08J11/06

Abstract: A method for separating and purifying polymers of a reclaimed product (rP) is disclosed. The rP is contacted at an elevated temperature and pressure, with an extraction solvent to produce an extracted rP (erP). A solvent, at conditions sufficient to solubilize the first polymer, contacts the erP to produce a solution, which is purified at an elevated temperature and pressure by contacting it with a solid medium to produce a purified solution of the first polymer. The purified polymer is then separated from the purified solution, and the method steps are repeated until all polymers are separated and purified.

公开(公告)号：US10941269B2

公开(公告)日：2021-03-09

申请号：US16423226

申请日：2019-05-28

Applicant: The Procter & Gamble Company

Inventor： John Moncrief Layman ,  Dimitris Ioannis Collias ,  Hans Schonemann ,  Kara Williams

IPC: C08J11/08 ,  B01D11/02 ,  B01D21/00 ,  B01J3/04

Abstract: A method for purifying a reclaimed polyethylene is disclosed. In one embodiment, the method involves obtaining reclaimed polyethylene, contacting the reclaimed polyethylene with a first fluid solvent to produce an extracted reclaimed polyethylene; then dissolving the extracted reclaimed polyethylene in a solvent to produce a first solution comprising polyethylene. The first solution is settled and then filtered. A purer polyethylene is separated from the resulting solution.

公开(公告)号：US20210054248A1

公开(公告)日：2021-02-25

申请号：US17001345

申请日：2020-08-24

Applicant: The Regents of the University of Michigan ,  The Procter & Gamble Company

Inventor： Dimitris Ioannis Collias ,  Paul Zimmerman ,  Paul Takunda Chazovachii ,  Michael Robo ,  Anne McNeil ,  Neil Marsh ,  Martin Ian James

IPC: C09J133/08 ,  C08J11/16

Abstract: Methods for upcycling crosslinked sodium polyacrylate to pressure sensitive adhesives via (a) mechanochemical chain-shortening and esterification or (b) esterifying with high conversion with a Fischer esterification process are disclosed. Also disclosed is a pressure sensitive adhesive prepared by the disclosed methods and articles comprising the pressure sensitive adhesive, including, but not limited to, pressure sensitive tape, a bandage, a label, note pads, a decal, a stamp, an envelope, a sticker, packaging, automobile trim, and a film.