公开(公告)号：US20250118882A1

公开(公告)日：2025-04-10

申请号：US18850179

申请日：2023-04-18

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Timothy J. Hebrink ,  Pontus S.B. Broddner ,  John P. Baetzold ,  Derek J. Dehn ,  Charles A. Hill

IPC: H01Q1/02 ,  B32B3/30 ,  B32B15/09 ,  B32B15/20 ,  B32B27/08 ,  B32B27/30 ,  B32B27/36

Abstract: A cooling film for use in passively cooling an antenna includes an antisoiling layer secured to a first major surface of a reflective microporous layer. The reflective microporous layer comprises a first fluoropolymer and is diffusely reflective of electromagnetic radiation over a majority of wavelengths in the range of 400 to 2500 nanometers. The film can also include an infrared-absorptive layer secured to a second major surface of the film opposite the first major surface, and the infrared-absorptive layer is optionally metallized. The film is shaped into a self-supporting three-dimensional structure, such as fins, and a thermally conductive material is inside the structure and secured to a portion of the antenna, either the front side of the antenna for the non-metallized film or the back side of the antenna for the metallized film.

公开(公告)号：US11745167B2

公开(公告)日：2023-09-05

申请号：US16763339

申请日：2018-11-15

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Jerald K. Rasmussen ,  Derek J. Dehn ,  Clinton P. Waller, Jr. ,  Bharat R. Acharya ,  Satinder K. Nayar

IPC: B01J20/28 ,  B01D39/16 ,  B01J20/10 ,  B01J20/22 ,  B01J20/26 ,  B01J20/30

CPC classification number: B01J20/28026 ,  B01D39/1676 ,  B01J20/103 ,  B01J20/106 ,  B01J20/22 ,  B01J20/261 ,  B01J20/265 ,  B01J20/28021 ,  B01J20/305 ,  B01J20/3007 ,  B01D2239/0407 ,  B01D2239/10 ,  B01D2239/1208

Abstract: A polymer matrix composite comprising a porous polymeric network; and a plurality of functional particles distributed within the polymeric network structure, and wherein the polymer matrix composite has an air flow resistance at 25° C., as measured by the “Air Flow Resistance Test,” of less than 300 seconds/50 cm3/500 micrometers; and wherein the polymer matrix composite has a density of at least 0.3 g/cm3; and methods for making the same. The polymer matrix composites are useful, for example, as filters.

公开(公告)号：US20220213372A1

公开(公告)日：2022-07-07

申请号：US17595092

申请日：2020-05-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Paul T. Hines ,  Derek J. Dehn ,  Sebastian Goris ,  Clinton P. Waller, Jr. ,  Mario A. Perez ,  Bharat R. Acharya ,  Ronald W. Ausen

IPC: C09K5/18 ,  C09K5/14 ,  C08K3/26 ,  C08K3/38 ,  C08K3/30 ,  C08K3/04 ,  C08J9/00 ,  C08J9/28

Abstract: (Co)polymer matrix composites including a porous (co)polymeric network; a multiplicity of thermally-conductive particles, and a multiplicity of endothermic particles distributed within the (co)polymeric network structure; wherein the thermally-conductive particles and endothermic particles are present in a range from 15 to 99 weight percent, based on the total weight of the particles and the (co)polymer (excluding the solvent). Optionally, the (co)polymer matrix composite volumetrically expands by at least 10% of its initial volume when exposed to a temperature of at least 135° C. Methods of making and using the (co)polymer matrix composites are also disclosed. The (co)polymer matrix composites are useful, for example, as heat dissipating or heat absorbing articles, as fillers, thermal interface materials, and thermal management materials, for example, in electronic devices, more particularly mobile handheld electronic devices, power supplies, and batteries.

公开(公告)号：US20220127444A1

公开(公告)日：2022-04-28

申请号：US17570862

申请日：2022-01-07

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Ning Zhou ,  Robert S. Clough ,  Derek J. Dehn ,  Jeffrey P. Kalish ,  William W. Merrill ,  Kevin M. Lewandowski ,  Jayant Chakravarty

IPC: C08L31/04 ,  C08L67/04 ,  C09J7/25 ,  C08K5/103 ,  C08K5/11 ,  C09J7/24 ,  B32B7/12 ,  B32B27/30 ,  C08J5/18

Abstract: A composition is described comprising semicrystalline polylactic acid polymer; polyvinyl acetate polymer having a glass transition temperature (Tg) of at least 25° C.; plasticizer; and optionally amorphous polylactic acid polymer. In another embodiment the composition further comprises nucleating agent. Also described are films comprising the composition as well as articles, such as a tape or sheet, comprising the film described herein and a layer of pressure sensitive adhesive disposed on the film.

公开(公告)号：US20220112319A1

公开(公告)日：2022-04-14

申请号：US17298218

申请日：2019-11-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Timothy J. Hebrink ,  Jeffrey O. Emslander ,  Katelyn M. Leniczek ,  Jacob D. Young ,  Darrin H. Lee ,  Chris R. Birkholz ,  Jinsheng Zhou ,  Pingfan Wu ,  Derek J. Dehn ,  Christopher J. Rother

IPC: C08F214/26 ,  C08F214/22 ,  C08F214/28 ,  B29C48/08 ,  B29C48/18 ,  C08F220/06 ,  C08F210/02

Abstract: A composite film comprises first and second layers. The first layer comprises a first copolymer of monomers comprising tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride, wherein the first copolymer contains at least 35 mole percent of vinylidene fluoride monomer units. The second layer is disposed on the first layer, and comprises a second copolymer comprising 50 to 83 weight percent of ethylene monomer units and at least 17 weight percent of alkyl (meth)acrylate monomer units represented by the formula (I) wherein R1 is H or methyl, and each R2 is independently an alkyl group having from 1 to 4 carbon atoms. Methods of making the composite film and articles including it are also disclosed.

公开(公告)号：US11732104B2

公开(公告)日：2023-08-22

申请号：US16763271

申请日：2018-11-15

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Badri Veeraraghavan ,  Derek J. Dehn ,  Clinton P. Waller, Jr. ,  Bharat R. Acharya ,  Satinder K. Nayar

IPC: C08J9/35 ,  C08J9/28 ,  C08K3/22 ,  C08J9/36 ,  C08K7/28 ,  H01B3/30

CPC classification number: C08J9/35 ,  C08J9/28 ,  C08J9/36 ,  C08K3/22 ,  C08K7/28 ,  C08J2201/02 ,  C08J2201/052 ,  C08J2207/06 ,  C08J2323/06 ,  C08K2003/2237 ,  H01B3/30

Abstract: A polymer matrix composite comprising a porous polymeric network; and a plurality of dielectric particles distributed within the polymeric network structure; wherein the dielectric particles are present in a range from 5 to 98 weight percent, based on the total weight of the dielectric particles and the polymer (excluding the solvent); and wherein the polymer matrix composite has a dielectric constant in a range from 1.05 to 80; and methods for making the same. Polymer matrix composites comprising dielectric particles are useful, for example, as electric field insulators.

公开(公告)号：US20220259398A1

公开(公告)日：2022-08-18

申请号：US17595094

申请日：2020-05-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Sebastian Goris ,  Derek J. Dehn ,  Paul T. Hines ,  Michael S. Graff, JR. ,  Mario A. Perez ,  Charles L. Bruzzone ,  Bharat R. Acharya ,  Clinton P. Waller

IPC: C08J9/28 ,  C08K3/38 ,  C08K3/08 ,  C08J3/21 ,  C08J9/00 ,  C09K5/14 ,  H01F1/053

Abstract: (Co)polymer matrix composites including a porous (co)polymeric network; a multiplicity of thermally-conductive particles and a multiplicity of magnetic particles distributed within the (co)polymeric network structure; wherein the thermally-conductive particles, magnetic particles and optional magnetic particles are present in a range from 15 to 99 weight percent, based on the total weight of the particles and the (co)polymer (excluding the solvent). Methods of making and using the (co)polymer matrix composites are also disclosed. The (co)polymer matrix composites are useful, for example, as heat dissipating or heat absorbing thermal interface materials that also provide magnetic properties useful, for example, in flux field directional materials or shielding from electromagnetic interference.

公开(公告)号：US11254812B2

公开(公告)日：2022-02-22

申请号：US16748040

申请日：2020-01-21

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Ning Zhou ,  Robert S. Clough ,  Derek J. Dehn ,  Jeffrey P. Kalish ,  William W. Merrill ,  Kevin M. Lewandowski ,  Jayant Chakravarty

IPC: C08L31/04 ,  C08L67/04 ,  C09J7/25 ,  C08K5/103 ,  C08K5/11 ,  C09J7/24 ,  B32B7/12 ,  B32B27/30 ,  C08J5/18 ,  B32B27/18 ,  B32B7/04 ,  B32B27/22 ,  B32B27/08 ,  B32B27/36 ,  C08K5/09 ,  C09J7/20 ,  C08K5/10 ,  C08K5/098 ,  C08K3/01 ,  C08K5/00 ,  C09J133/26

Abstract: A composition is described comprising semicrystalline polylactic acid polymer; polyvinyl acetate polymer having a glass transition temperature (Tg) of at least 25° C.; plasticizer; and optionally amorphous polylactic acid polymer. In another embodiment the composition further comprises nucleating agent. Also described are films comprising the composition as well as articles, such as a tape or sheet, comprising the film described herein and a layer of pressure sensitive adhesive disposed on the film.

公开(公告)号：US20210122890A1

公开(公告)日：2021-04-29

申请号：US16074131

申请日：2017-02-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Derek J. Dehn ,  Graham M. Clarke ,  Joseph T. Bartusiak ,  Ning Zhou ,  Jeffrey A. Carlson

IPC: C08J5/22 ,  C09J7/25 ,  C09J5/06 ,  C09J107/00 ,  C09J133/08 ,  C09J7/38

Abstract: Presently described are polylactic acid polymer based films comprising a structured surface and articles. In one embodiment, the film comprises a semicrystalline polylactic acid polymer; a second polymer such as polyvinyl acetate polymer having a glass transition temperature (Tg) of at least 25° C.; and plasticizer. Articles are also described such as a tape or sheet, comprising the structured PLA-based film and a layer of (e.g. pressure sensitive) adhesive disposed on the film. In some embodiments, the tape or sheet further comprises a low adhesion backsize or a release liner. The article can be suitable for various end-uses. In one embodiment, the tape is a paint masking tape. In another embodiment, the tape is a floor marking tape.

公开(公告)号：US20200369847A1

公开(公告)日：2020-11-26

申请号：US16763739

申请日：2018-11-15

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Brandon A. Bartling ,  Derek J. Dehn ,  Paul T. Hines ,  Clinton P. Waller, Jr. ,  Satinder K. Nayar

IPC: C08J9/35 ,  C08J9/28 ,  C08J9/36 ,  C08K3/22 ,  C08K3/26 ,  C08K3/30 ,  C08J9/00

Abstract: A polymer matrix composite comprising a porous polymeric network; and a plurality of endothermic particles distributed within the polymeric network structure, wherein the endothermic particles are present in a range from 15 to 99 weight percent, based on the total weight of endothermic particles and the polymer (excluding any solvent); and wherein the polymer matrix composite has an endotherm of greater than 200 J/g; and methods for making the same. The polymer matrix composites are useful, for example, as a filler, thermal energy absorbers, and passive battery safety components.