公开(公告)号：US20240003922A1

公开(公告)日：2024-01-04

申请号：US18199656

申请日：2023-05-19

Applicant: XEROX CORPORATION

Inventor： Gabriel Iftime ,  Fatemeh Ostadhossein ,  Sean Emerson Doris ,  Stephen Matthew Meckler ,  Mahati Chintapalli

IPC: G01N33/94 ,  G01N33/52

CPC classification number: G01N33/948 ,  G01N33/521

Abstract: A polymeric gel incorporating a diazonium salt for detection of THC. The diazonium salt may be covalently attached to the polymer, or non-covalently distributed throughout the polymer. The polymeric gel may be formulated as a spot on a test strip to be used for drug testing. The drug may include THC. Methods of preparing a polymerizable diazonium salt precursor, called an amino aryloxyl monomer, as well as methods of preparing a polymeric gel incorporating a diazonium salt.

公开(公告)号：US10717824B2

公开(公告)日：2020-07-21

申请号：US16232688

申请日：2018-12-26

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED ,  XEROX CORPORATION

Inventor： Mahati Chintapalli ,  Barkev Keoshkerian ,  Gabriel Iftime ,  Quentin Van Overmeere

IPC: C08J9/28 ,  C08G77/442 ,  C01B33/158 ,  C08F2/48 ,  C08L33/08 ,  C08J11/22 ,  C08J3/24 ,  C08K5/37 ,  C08L33/10 ,  C08F2/38 ,  C08J3/075 ,  C08F220/14 ,  C08F220/18 ,  C08F212/36 ,  C08F222/10

Abstract: A method of producing a polymer aerogel can include dissolving gel precursors consisting of radical polymerizable monomers and crosslinkers, radical initiators, and a chain transfer agent (CTA) in a reaction solvent, wherein the monomers and cross-linkers produce stiff homopolymers; placing the gel precursors into a substrate; polymerizing the gel on the substrate; optionally removing the wet gel from the mold; optionally performing at least one solvent exchange on the gel; and removing the reaction solvent.

公开(公告)号：US20190135984A1

公开(公告)日：2019-05-09

申请号：US16232688

申请日：2018-12-26

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED ,  XEROX CORPORATION

Inventor： Mahati Chintapalli ,  Barkev Keoshkerian ,  Gabriel Iftime ,  Quentin Van Overmeere

IPC: C08G77/442 ,  C08L33/10 ,  C08K5/37 ,  C08J3/24 ,  C01B33/158 ,  C08J9/28 ,  C08L33/08 ,  C08F2/48 ,  C08J11/22

Abstract: A method of producing a polymer aerogel can include dissolving gel precursors consisting of radical polymerizable monomers and crosslinkers, radical initiators, and a chain transfer agent (CTA) in a reaction solvent, wherein the monomers and cross-linkers produce stiff homopolymers; placing the gel precursors into a substrate; polymerizing the gel on the substrate; optionally removing the wet gel from the mold; optionally performing at least one solvent exchange on the gel; and removing the reaction solvent.

公开(公告)号：US20190106543A1

公开(公告)日：2019-04-11

申请号：US15728385

申请日：2017-10-09

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED ,  XEROX CORPORATION

Inventor： Mahati Chintapalli ,  Barkev Keoshkerian ,  Gabriel Iftime ,  Quentin Van Overmeere

IPC: C08G77/442 ,  C01B33/158 ,  C08F2/48 ,  C08L33/08 ,  C08L33/10 ,  C08J11/22 ,  C08J3/24 ,  C08K5/37 ,  C08J9/28

Abstract: A method of producing a transparent polymer aerogel can include dissolving gel precursors consisting of radical polymerizable monomers and crosslinkers, radical initiators, and a chain transfer agent (CTA) in a reaction solvent, placing the gel precursors into a substrate, polymerizing the gel on the substrate, optionally removing the wet gel from the mold, optionally performing at least one solvent exchange on the gel, and drying the solvent-exchanged gel.

公开(公告)号：US11760824B2

公开(公告)日：2023-09-19

申请号：US17069611

申请日：2020-10-13

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED ,  XEROX CORPORATION

Inventor： Mahati Chintapalli ,  Barkev Keoshkerian ,  Alec Ho ,  Gabriel Iftime ,  Quentin Van Overmeere ,  Eli Bulger

IPC: C08F293/00 ,  C08J9/00 ,  B01J13/00 ,  C08J3/24

CPC classification number: C08F293/005 ,  B01J13/0065 ,  B01J13/0091 ,  C08J3/24 ,  C08F2438/02

Abstract: A dried polymer aerogel has a Brunauer-Emmett Teller (BET) surface area over 100 m2/g, porosity of greater than 10%, visible transparency greater than 20%, color rendering index of over 20%, and average pore size of less than 100 nm.

公开(公告)号：US11067514B2

公开(公告)日：2021-07-20

申请号：US15849096

申请日：2017-12-20

Applicant: PALO ALTO RESEARCH CENTER INCORPORATED ,  XEROX CORPORATION

Inventor： Gabriel Iftime ,  Jessica Louis Baker Rivest ,  George A. Gibson ,  Eric Cocker ,  Mahati Chintapalli ,  Quentin Van Overmeere

IPC: G01N31/22 ,  G01N21/78 ,  B82Y30/00 ,  G01N21/77

Abstract: A sensor has a transparent polymer aerogel, and sensing materials dispersed into the transparent, polymer aerogel, where the sensing materials change color in response to environmental conditions. A method of forming a sensor includes providing a substrate, forming a polymer aerogel layer on the substrate, and infusing the polymer aerogel layer with sensing molecules.