公开(公告)号：US20220361486A1

公开(公告)日：2022-11-17

申请号：US17852307

申请日：2022-06-28

Applicant: HRL Laboratories, LLC

Inventor： Adam GROSS ,  Andrew NOWAK ,  Michael VENTULETH ,  Stella FORS ,  Jason GRAETZ ,  Ashley DUSTIN ,  John VAJO

IPC: A01N25/10 ,  C09D5/14 ,  A01N33/12

Abstract: Antimicrobial coatings that are transparent and not easily stained are disclosed. Some variations provide a transparent antimicrobial structure comprising: a discrete solid structural phase comprising a solid structural polymer with a glass-transition temperature from 25° C. to 300° C.; a continuous transport phase interspersed within the discrete solid structural phase, wherein the continuous transport phase comprises a solid transport material; and an antimicrobial agent contained within the continuous transport phase, wherein the antimicrobial agent is dissolved in a fluid and/or in a solid solution with the continuous transport phase. The discrete solid structural phase and the continuous transport phase are separated by an average phase-separation length selected from 100 nanometers to 500 microns. This invention resolves the trade-off between antifouling and fluorinated material content. This invention also resolves the trade-off between transport of absorbed molecules and transparency. The result is an improved antimicrobial structure that is both antifouling and transparent.

公开(公告)号：US20240301290A1

公开(公告)日：2024-09-12

申请号：US18664420

申请日：2024-05-15

Applicant: HRL Laboratories, LLC

Inventor： Ashley DUSTIN ,  Adam GROSS ,  Andrew NOWAK ,  Adam SORENSEN

IPC: C09K19/38 ,  C08G63/185 ,  C08G63/85 ,  C09K19/02 ,  C09K19/04

CPC classification number: C09K19/3809 ,  C08G63/185 ,  C08G63/85 ,  C09K19/02 ,  C08G2250/00 ,  C09K2019/0448

Abstract: Some variations provide an oligomer composition comprising: polarizable first thermotropic liquid-crystal oligomer molecules (preferably urethanes or ureas) containing first triggerable reactive end groups, wherein the first triggerable reactive end groups are selected from the group consisting of hydroxyl, isocyanate, blocked isocyanate, acrylate, epoxide, amine, vinyl, ester, thiol, conjugated diene, substituted alkene, furan, maleimide, anthracene, and combinations thereof, and wherein the polarizable first thermotropic liquid-crystal oligomer molecules are characterized by a weight-average molecular weight from about 200 g/mol to about 10,000 g/mol; optionally, a plurality of polarizable second thermotropic liquid-crystal oligomer molecules containing second triggerable reactive end groups, wherein the second triggerable reactive end groups are capable of reacting with the first triggerable reactive end groups; and optionally, a reactive coupling agent capable of reacting with the first triggerable reactive end groups. Methods are described for converting the oligomer composition into an anisotropic thermally conductive polymer. Many commercial uses are disclosed.

公开(公告)号：US20230090180A1

公开(公告)日：2023-03-23

申请号：US17989199

申请日：2022-11-17

Applicant: HRL Laboratories, LLC

Inventor： Michael VENTULETH ,  Andrew NOWAK ,  Adam GROSS

IPC: C09D171/02 ,  C08G65/00 ,  C08L101/02 ,  C09D201/02 ,  C08G65/22 ,  C08G81/00

Abstract: Disclosed herein is a shelf-stable, two-part formula for making an antimicrobial biphasic polymer. Some variations provide a two-part formula for fabricating a biphasic polymer, wherein the two-part formula consists essentially of (A) a first liquid volume, wherein the first liquid volume comprises: a structural phase containing a solid structural polymer; a transport phase containing a solid transport polymer; a chain extender; a curing catalyst; a first solvent; and (B) a second liquid volume that is volumetrically isolated from the first liquid volume, wherein the second liquid volume comprises: a crosslinker that is capable of crosslinking the solid structural polymer with the solid transport polymer; and a second solvent. An antimicrobial agent (e.g., quaternary ammoniums salts) may be contained in the first liquid volume or in the second liquid volume. Methods of making and using the antimicrobial biphasic polymer are described.

公开(公告)号：US20230332047A1

公开(公告)日：2023-10-19

申请号：US18142090

申请日：2023-05-02

Applicant: HRL Laboratories, LLC

Inventor： Adam GROSS ,  Ashley DUSTIN ,  Adam SORENSEN

IPC: C09K19/38

CPC classification number: C09K19/3809 ,  C09K2019/0448

Abstract: Some variations provide an anisotropic thermally conductive polymer composition comprising a plurality of polarizable, thermotropic main-chain liquid-crystal polymer molecules with crystalline domains. The liquid-crystal polymer molecules are in a nematic phase or a smectic phase, and at least 80% of the crystalline domains are aligned along a crystal axis. A method of making an anisotropic thermally conductive polymer composition comprises: synthesizing or obtaining a polymer containing polarizable domains; heating the polymer to form a polymer melt; cooling the polymer melt to form a thermotropic liquid-crystal polymer; exposing the thermotropic liquid-crystal polymer to an electrical field, thereby aligning the polarizable domains along a crystal axis; and recovering the thermotropic liquid-crystal polymer as an anisotropic thermally conductive polymer composition. The polymer composition may be formed into an object characterized by thermal conductivity along the minimum dimension that is at least three times greater than thermal conductivity along the maximum dimension.

公开(公告)号：US20230282398A1

公开(公告)日：2023-09-07

申请号：US18114199

申请日：2023-02-24

Applicant: HRL Laboratories, LLC

Inventor： Brennan YAHATA ,  Adam GROSS ,  Christopher HENRY ,  Darby LAPLANT ,  Amber SUCICH ,  Raymond NGUYEN ,  Christine KIM

IPC: H01F1/055

CPC classification number: H01F1/0551 ,  B82Y25/00

Abstract: The disclosed technology provides a nanofunctionalized magnetic material feedstock comprising: from 50 wt % to 99.5 wt % of magnetic microparticles having an average microparticle effective diameter from 1 micron to 500 microns; from 0.4 wt % to 40 wt % of one or more rare earth elements; and from 0.1 wt % to 10 wt % of metal-containing inoculant nanoparticles, wherein at least 1 wt % of the inoculant nanoparticles are chemically and/or physically disposed on surfaces of the magnetic microparticles. The nanofunctionalized magnetic material feedstock is processed using high-throughput laser-based additive manufacturing to optimize the architecture of NdFeB or other magnets, generating site-specific, demagnetization-resistant microstructures. This disclosure teaches a rapid, single-step laser-based process to tailor the easy axis alignment, grain size, and microstructure of a permanent magnet at corners and edges to resist demagnetization.

公开(公告)号：US20220251449A1

公开(公告)日：2022-08-11

申请号：US17542488

申请日：2021-12-05

Applicant: HRL Laboratories, LLC

Inventor： Adam GROSS ,  Ashley DUSTIN ,  Adam SORENSEN

IPC: C09K19/38

Abstract: Some variations provide an anisotropic thermally conductive polymer composition comprising a plurality of polarizable, thermotropic main-chain liquid-crystal polymer molecules with crystalline domains. The liquid-crystal polymer molecules are in a nematic phase or a smectic phase, and at least 80% of the crystalline domains are aligned along a crystal axis. A method of making an anisotropic thermally conductive polymer composition comprises: synthesizing or obtaining a polymer containing polarizable domains; heating the polymer to form a polymer melt; cooling the polymer melt to form a thermotropic liquid-crystal polymer; exposing the thermotropic liquid-crystal polymer to an electrical field, thereby aligning the polarizable domains along a crystal axis; and recovering the thermotropic liquid-crystal polymer as an anisotropic thermally conductive polymer composition. The polymer composition may be formed into an object characterized by thermal conductivity along the minimum dimension that is at least three times greater than thermal conductivity along the maximum dimension.

公开(公告)号：US20240400824A1

公开(公告)日：2024-12-05

申请号：US18799575

申请日：2024-08-09

Applicant: HRL Laboratories, LLC

Inventor： Kevin DRUMMEY ,  Ashley DUSTIN ,  Andrew NOWAK ,  Adam GROSS ,  Shanying CUI

IPC: C08L77/06 ,  C08G69/28

Abstract: Some variations provide a polyoxalamide polymer comprising: one or more first segments containing at least one repeat unit that includes (i) a branched, aliphatic hydrocarbon species and (ii) first amide groups at internal ends of the repeat unit, wherein the first amide groups are part of oxalamide groups; one or more polymer end groups containing second amide groups that are each covalently bonded directly to one of the first amide groups, wherein the second amide groups are also part of the oxalamide groups, and wherein the oxalamide groups contain —N—C(═O)—C(═O)—N— sequences; and a reacted form of one or more multifunctional amine chain extenders or crosslinkers with an amine functionality of 3 or greater. The polyoxalamide polymer may be present in a lens, a window, a coating, or a film, for example. The polyoxalamide polymer may have UV transparency, visual transparency, NIR transparency, MWIR transparency, and/or LWIR transparency.

公开(公告)号：US20230282397A1

公开(公告)日：2023-09-07

申请号：US18114202

申请日：2023-02-24

Applicant: HRL Laboratories, LLC

Inventor： Brennan YAHATA ,  Adam GROSS ,  Christopher HENRY ,  Darby LAPLANT ,  Amber SUCICH ,  Raymond NGUYEN ,  Christine KIM

IPC: H01F1/053 ,  H01F1/00 ,  H01F7/02

CPC classification number: H01F1/0536 ,  H01F1/0045 ,  H01F7/021 ,  H01F7/0221 ,  H01F41/0253

Abstract: The disclosed technology provides a cladded permanent magnet comprising: a core magnet region containing a core magnetic material; and a magnet cladding containing a shell magnetic material comprising (i) a magnetic compound that is chemically the same as the core magnetic material, (ii) one or more rare earth elements, and (iii) metal-containing inoculant nanoparticles, wherein the magnet cladding is disposed on the core magnet region, wherein the magnet cladding has at least 10% higher ambient-temperature magnetic coercivity compared to the core magnet region. The cladded permanent magnet is made via high-throughput laser-based additive manufacturing to optimize the architecture of NdFeB or other magnets, generating site-specific, demagnetization-resistant microstructures. This disclosure teaches a rapid, single-step laser-based process to tailor the easy axis alignment, grain size, and microstructure of a permanent magnet at corners and edges to resist demagnetization.

公开(公告)号：US20230137249A1

公开(公告)日：2023-05-04

申请号：US18090442

申请日：2022-12-28

Applicant: HRL Laboratories, LLC

Inventor： Ashley DUSTIN ,  Adam GROSS ,  Andrew NOWAK ,  Adam SORENSEN

IPC: C09K19/38 ,  C08G63/185 ,  C08G63/85 ,  C09K19/02

Abstract: Some variations provide an oligomer composition comprising: polarizable first thermotropic liquid-crystal oligomer molecules (preferably urethanes or ureas) containing first triggerable reactive end groups, wherein the first triggerable reactive end groups are selected from the group consisting of hydroxyl, isocyanate, blocked isocyanate, acrylate, epoxide, amine, vinyl, ester, thiol, conjugated diene, substituted alkene, furan, maleimide, anthracene, and combinations thereof, and wherein the polarizable first thermotropic liquid-crystal oligomer molecules are characterized by a weight-average molecular weight from about 200 g/mol to about 10,000 g/mol; optionally, a plurality of polarizable second thermotropic liquid-crystal oligomer molecules containing second triggerable reactive end groups, wherein the second triggerable reactive end groups are capable of reacting with the first triggerable reactive end groups; and optionally, a reactive coupling agent capable of reacting with the first triggerable reactive end groups. Methods are described for converting the oligomer composition into an anisotropic thermally conductive polymer. Many commercial uses are disclosed.

公开(公告)号：US20230097289A1

公开(公告)日：2023-03-30

申请号：US18074988

申请日：2022-12-05

Applicant: HRL Laboratories, LLC

Inventor： John VAJO ,  Adam GROSS ,  Jason GRAETZ

IPC: C09D171/02 ,  C08G65/00 ,  C08L101/02 ,  C09D201/02 ,  C08G65/22 ,  C08G81/00

Abstract: Some variations provide a sensing system configured to measure the concentration of an antimicrobial agent in a polymer, comprising: a polymer containing (i) a discrete solid structural phase comprising a solid structural polymer and (ii) a continuous transport phase comprising a solid transport polymer and capable of containing the antimicrobial agent; and an antimicrobial-agent sensor that chemically senses the antimicrobial agent. The antimicrobial-agent sensor is disposed on a surface of, and in mass transport with, the polymer. The antimicrobial-agent sensor contains a responsive material disposed on or within a carrier material. The responsive material is chemically reactive with the antimicrobial agent and exhibits an observable and quantifiable property change upon chemically reacting with the antimicrobial agent. The observable and quantifiable property change may involve chromaticity, optical transparency, ionic conductivity, or electronic conductivity, for example. Some variations provide methods of making and/or using the sensing system.