3m Innovative Properties Company

Derek J Dehn

Bharat R Acharya

Clinton P Waller, Jr

Satinder K Nayar

William Ward Merrill

Kevin Michael Lewandowski

Robin Edgar Wright

Robert Steven Clough

Jayant Chakravarty

Jonathan F Hester

Jerald K Rasmussen

Moses Mekala David

Timothy J Hebrink

Charles L Bruzzone

Haiyan Zhang

Jaewon Kim

Yong K Wu

Naiyong Jing

Richard John Pokorny

Brant Ulrick Kolb

Duane Douglas Fansler

Ronald David Jesme

Jayshree Seth

Vivian Wynne Jones

Jimmie Rae Baran, Jr

Jeffrey O Emslander

Mahfuza B Ali

William J Kopecky

Ta-Hua Yu

James Stephen Mrozinski

Terry R Hobbs

Jacob D Young

Badri Veeraraghavan

Corinne Elizabeth Lipscomb

Joseph T Bartusiak

Ning Zhou

Jeffrey P Kalish

Brandon Alan Bartling

Bradley L Givot

Jinsheng Zhou

Daniel P Meehan

Michelle M Mok

Michael S Graff

Paul T Hines

Noah O Shanti

James P Burke

Todd G Pett

Fabian Stolzenburg

Mary E Johansen

Lon R Johnson

Thomas Q Chastek

Pamela A Percha

Ignatius A Kadoma

Ying Lin

Xuan Jiang

Joshua M Fishman

Caitlin E Meree

Jeremy M Higgins

Paul D Pennington

Anish Kurian

Thomas E Augustine

Jennifer J Sokol

Robert C Coffin

Sergei A Manuilov

Jeanne M Bruss

Aaron T Hedegaard

Audrey S Forticaux

Kuan-Yin Lin

Clint J Novotny

Justin M Bolton

Vivan W Jones

Clinton P Waller

Jeffrey A Carlson

Andrew J Witte

Daniel R Meehan

A film includes a polymeric material and a plurality of particles dispersed therein. The polymeric material includes a plurality of elongate polymeric elements oriented along substantially a same first direction and interconnecting the particles. A ratio of a volume of the plurality of particles to a volume of the polymeric material is at least 5. An elongate portion of at least a first elongate polymeric element in the plurality of elongate polymeric elements may conform to and be bonded to a first particle in the plurality of particles along an entire length of the elongate portion. The first elongate polymeric element may extend from the elongate portion at least to a second particle in the plurality of particles.

Film including polymeric elements interconnecting particles

A composite cooling film comprises an ultraviolet-reflective multilayer optical film and a reflective microporous layer secured thereto. The ultraviolet-reflective multilayer optical film is at least 50 percent reflective of ultraviolet radiation over a majority of the wavelength range of at least 340 but less than 400 nanometers. The reflective microporous layer has a continuous phase comprising a nonfluorinated organic polymer and is diffusely reflective of solar radiation over a majority the wavelength range of 400 to 2500 nanometers, inclusive. The composite cooling film has an average absorbance over the wavelength range of 8 to 13 microns of at least 0.85. An article comprising the composite cooling film adhered to a substrate is also disclosed.

Composite cooling film and article including the same

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 cm/500 micrometers; and wherein the polymer matrix composite has a density of at least 0.3 g/cm; and methods for making the same. The polymer matrix composites are useful, for example, as filters.

Polymer matrix composites comprising functional particles and methods of making the same

A magnetic shielding film includes opposing first and second major surfaces and a plurality of particles dispersed therebetween, each particle having a magnetic permeability, a thickness H along a thickness direction of the particle, and a longest dimension L along a length direction of the particle orthogonal to the thickness direction, L/H greater than or equal to 2, the particles defining a plurality of voids therebetween, the length directions of at least 60% of the particles oriented within 5.5 degrees of a same orientation direction.

Orientation of magnetic fillers to optimize film properties

A film includes a polymeric material and a plurality of particles dispersed therein. The polymeric material includes a plurality of elongate polymeric elements oriented along substantially a same first direction and interconnecting the particles. An elongate end portion of at least a first elongate polymeric element in the plurality of elongate polymeric elements conforms and is bonded to a first particle in the plurality of particles along an entire length of the elongate end portion. An elongate mid portion of at least a second elongate polymeric element in the plurality of elongate polymeric elements conforms and is bonded to a second particle in the plurality of particles along an entire length of the elongate mid portion with the second elongate polymeric element extending away from the second particle from opposite ends of the elongate mid portion. Multilayer films and processes are also described.

Polymer matrix composite comprising a porous polymeric network; and a plurality of thermally insulating particles distributed within the polymeric network structure, wherein the thermally insulating particles are present in a range from 15 to 99 weight percent, based on the total weight of the thermally insulating particles and the polymer (excluding the solvent); and wherein the polymer matrix composite has a density not greater than 3 g/cm; and methods for making the same. The polymer matrix composites are useful, for example, in electronic devices.

Polymer matrix composites comprising thermally insulating particles and methods of making the same

A composite cooling film () comprises 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 antisoiling layer () has an outwardly facing antisoiling surface () opposite the micro-voided polymer film. An article () comprising the composite cooling film () secured to a substrate () is also disclosed.

Polymer matrix composite comprising a porous polymeric network; and a plurality of intumescent particles distributed within the polymeric network structure; wherein the intumescent particles are present in a range from 15 to 99 weight percent, based on the total weight of the intumescent particles and the polymer (excluding the solvent); and wherein the polymer matrix composite volumetrically expands at least 2 times its initial volume when exposed to at least one temperature greater than 135° C.; and methods for making the same. The polymer matrix composites are useful, for example, as fillers, thermally initiated fuses, and fire stop devices.

Polymer matrix composites comprising intumescent particles and methods of making the same

Method of making a polymer matrix composite comprising a porous polymeric network structure; and a plurality of particles distributed within the polymeric network structure, the method comprising: combining a thermoplastic polymer, a solvent that the thermoplastic polymer is soluble in, and a plurality of particles to provide a slurry; forming the slurry in to an article; heating the article in an environment to retain at least 90 percent by weight of the solvent, based on the weight of the solvent in the slurry, and inducing phase separation of the thermoplastic polymer from the solvent to provide the polymer matrix composite.

Method of making polymer matrix composites

A composition is described comprising semicrystalline polylactic acid polymer; polyvinyl acetate polymer having a glass transition temperature (Tg) of at least 25&#xb0; 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.

Compositions and films comprising polylactic acid polymer, polyvinyl acetate polymer and plasticizer

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&#xb0; C., as measured by the 'Air Flow Resistance Test,' of less than 300 seconds/50 cm/500 micrometers; and wherein the polymer matrix composite has a density of at least 0.3 g/cm; and methods for making the same. The polymer matrix composites are useful, for example, as filters.

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.

Polymer matrix composites comprising dielectric particles and methods of making the same

A polymer matrix composite includes a porous polymeric network structure; and a plurality of acoustically active particles distributed within the polymeric network structure. The weight fraction of acoustically active particles is between 0.80 and 0.99, based on the total weight of the polymer matrix composite. The polymer matrix composite has an air flow resistance of less than 100 seconds/50 mL/500 &#x3bc;m.

Acoustically active materials

Polymer matrix composite comprising a porous polymeric network; and a plurality of thermally conductive particles distributed within the polymeric network structure; wherein the thermally conductive particles are present in a range from 15 to 99 weight percent, based on the total weight of the thermally conductive particles and the polymer (excluding the solvent); and wherein the polymer matrix composite has a density of at least 0.3 g/cm; and methods for making the same. The polymer matrix composites are useful, for example, in electronic devices.

Polymer matrix composites comprising thermally conductive particles and methods of making the same

Foam compositions are provided including a polylactic acid polymer; second (e.g., polyvinyl acetate) polymer having a glass transition temperature (T) of at least 25&#xb0; C.; and plasticizer. Also described are articles comprising the foam compositions, such as a sheet or hearing protection article. Methods of making and using the foam compositions are further described herein.

Foam compositions comprising polylactic acid polymer, polyvinyl acetate polymer and plasticizer, articles, and methods of making and using same

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Maplewood, MN, United States of America

Derek J Dehn