3m Innovative Properties Company

Timothy J Hebrink

William Ward Merrill

Kristopher J Derks

Michael F Weber

Carl A Stover

Peter D Condo

Andrew John Ouderkirk

John Allen Wheatley

Stephen A Johnson

Andrew T Ruff

Kevin M Hamer

Moses Mekala David

Ta-Hua Yu

Timothy J Nevitt

James M Jonza

Martin E Denker

Laurence R Gilbert

Vivian Wynne Jones

Yaoqi Joe Liu

Mark B O'Neill

Andrew K Hartzell

Richard J Thompson

Naiyong Jing

Rolf W Biernath

David G Freier

Jeffery N Jackson

Elisa M Cross

Edward J Kivel

Susan L Kent

Audrey A Sherman

Craig R Schardt

Richard C Allen

Charles L Bruzzone

Jun-Ying Zhang

Stephen P Maki

William L Kausch

Charles David Hoyle

Haiyan Zhang

Mark D Weigel

Robert D Taylor

Fuming B Li

Joan M Strobel

William B Black

Milind Balwant Sabade

Ronald J Tabar

Matthew T Scholz

David B Olson

Patricia M Savu

Jeffrey O Emslander

Matthew B Johnson

Mark A Roehrig

David S Hays

David Scott Thompson

Zhaohui Yang

Daniel J Schmidt

Derek J Dehn

William J Bryan

Justin A Riddle

Diane North

Michael E Griffin

Bruce A Nerad

Bert T Chien

Danny Leroy Fleming

Brian H Williams

Andrew J Henderson

James R Miller

Michelle M Mok

Ming Cheng

Thomas P Klun

Joel D Oxman

Kevin Michael Lewandowski

Kenneth A Epstein

Duane Douglas Fansler

Christopher Stewart Lyons

Neeraj Sharma

Guanglei Du

Junkang Jacob Liu

Jiaying Ma

Caleb T Nelson

Jonathan E Janoski

Richard S Buckanin

Arlin Lee Weikel

Graham M Clarke

Terry O Collier

Daniel M Pierpont

Susannah C Clear

Jacob D Young

Yufeng Liu

Anthony M Renstrom

Simon Kelly Shannon

David J Rowe

Anthony F Schultz

Carla S Thomas

Randy S Bay

Sonja S Mackey

Keith R Lyon

Raymond L Lucking

James A Klein

Onur Sinan Yordem

Jiao Liu

Passive cooling article () includes a plurality of first elements () defining a high absorbance in the atmospheric window wavelength range and defining high average reflectance in the solar wavelength range and a plurality of second elements () defining a low absorbance in the atmospheric window wavelength range and defining high average reflectance in the solar wavelength range, wherein the plurality of first () and second () elements are interspersed to form a major structure having a first major surface () comprising the first element outer surfaces () and the second element outer surfaces (), wherein the first element outer surfaces () face a first direction toward a first end region () of the major structure () and the second element outer surfaces () face a second direction toward a second end region () of the major structure. The article () may be applied to a substrate (), for example, on a generally vertical surface of a vehicle or stationary structure.

Multi-surface passive cooling articles

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

Barrier films including a (co)polymeric substrate, at least one dyad on the substrate, each dyad made of a (co)polymer layer and an oxide layer overlaying the (co)polymer layer, and an outer (co)polymer layer overlaying the dyads. Optionally, at least one outer oxide layer overlays the outer (co)polymer layer. The barrier films transmit visible light and transmits, at an incident light angle of at least one of 0°, 30°, 45°, 60°, or 75°, at most 70 percent of incident ultraviolet light at a wavelength range from at least 100 nanometers to 400 nanometers or in a wavelength range from at least 100 nm to 350 nm. The barrier films exhibit atomic oxygen degradation of less than 1×10mg/atom. The barrier films may be applied to decorative objects or electronic devices, (e.g., light receiving or emitting devices, in a satellite or aircraft. Methods of making the barrier films also are disclosed.

Ultraviolet radiation and atomic oxygen barrier films and methods of making and using the same

A hybrid solar window comprises: at least one glazing; a wave-length-selective solar mirror positioned to reflect IR toward an IR absorbing element. The IR absorbing elements comprises a conduit having a respective fluid inlet and fluid outlet, and an IR absorbing compound, wherein the IR absorbing compound is in thermal communication with the conduit. The wavelength-selective solar mirror has an average visible light transmittance of at least 50 percent and an average IR reflectance of at least 50 percent over the wavelength range of 850 to 1150 nanometers, inclusive. The IR absorbing element is configured to transfer thermal energy to a heat transfer fluid circulating through the conduit, wherein the IR absorbing element has an average visible light transmittance of at least 30 percent, and wherein each IR absorbing element has an average IR absorptance of at least 50 percent over the wavelength range 850 to 1150 nanometers, inclusive. Certain IR absorbing elements are also disclosed.

Hybrid solar window and IR absorbing assemblies

Multilayer optical film comprising at least a plurality of alternating first and second optical layers. Embodiments of the multilayer optical film are useful, for example, in UV-C shield, UV-C light collimator, and UV-C light concentrator applications.

Multilayer optical films and articles comprising the same

A light guide comprising a polymeric layer at least 25 percent transmissive over at least a 30 nm bandwidth in a wavelength range from 180 to 280 nm over a distance of at least 100 micrometers and visible light transparent reflecting layers (UV-C mirror) that are at least 50 percent reflective over at least 30 nm bandwidth in a wavelength range from 180 to 280 nm over an incident light angle of 0 to 90 degrees and that are at least 25 percent transmissive of visible light over at least 30 nm bandwidth in a wavelength range of 400 to 800 nm over an incident light angle of 0 to 90 degrees. The light guide is useful, for example, for antimicrobial surfaces.

Ultraviolet C light guides

Anti-reflective article includes a layer defining an anti-reflective surface. The anti-reflective surface includes a series of alternating micro-peaks and micro-spaces extending along an axis. The surface also includes a series of nano-peaks extending along an axis. The nano-peaks are disposed at least on the micro-spaces and, optionally, the micro-peaks. The article may be disposed on a photovoltaic module or skylight to reduce reflections and resist the collection of dust and dirt.

Anti-reflective surface structures

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.

A composite cooling film including a reflective nonporous inorganic-particle-filled organic polymeric layer, an ultra-violet-protective layer or layers, and an antisoiling layer.

Composite cooling film comprising a reflective nonporous organic polymeric layer and a UV-protective layer

A composite cooling film including non-fluorinated organic polymeric layer, a metal layer disposed inwardly of the non-fluorinated organic polymeric layer, and an antisoiling, ultraviolet-absorbing hardcoat layer that is disposed outwardly of the non-fluorinated organic polymeric layer.

Composite cooling film comprising an organic polymeric layer, a UV-absorbing layer, and a reflective metal layer

Multilayer infrared (IR) reflecting films are provided. An optical repeating unit of the film include a plurality of optical polymeric layers arranged to reflect light by constructive and destructive interference. Optical layer A is a high refractive index polymeric layer, and optical layer B is a low refractive index isotropic polymeric layer containing fluoropolymers. The film has an average reflectance of about 50% to about 100% in a near infrared wavelength range of about 850 nm to about 1850 nm, and an average transmission of about 70% to about 90% in a visible light range.

Visibly transparent broadband infrared mirror films having fluoropolymers and 7:1:1:7:1:1 layer thickness ratio

A multilayer fluoropolymer film comprising, in order: a first layer comprising a first polymer, the first polymer comprising at least 35 mol percent tetrafluoroethylene comonomer, at least 15 mole percent vinylidene fluoride comonomer, and at least 5 mol percent hexafluoropropylene comonomer, based on the total mol percent of the first polymer; a second layer comprising a second polymer, the second polymer comprising at least 50 mol percent vinylidene fluoride comonomer, based on the total mol percent of the second polymer; and a third layer comprising a third polymer, the third polymer comprising at least 50 mol percent methylmethacrylate comonomer, based on the total mol percent of the third polymer. The multilayer fluoroplymer films are useful for example, in multi-layer film applications (e.g., traffic sign protection, commercial graphic protection, paint protection, windows, windshields, building exteriors, and photo voltaics).

Multilayer fluoropolymer films

Surface structured articles comprising a polymer matrix and a dispersed phase, the article having first and second opposed major surfaces, at least a portion of the first major surface is a microstructured, anisotropic surface comprises features having at least one dimension in a range from 1 micrometer to 500 micrometers, wherein the dispersed phase comprises an antimicrobial material, and wherein at least a portion of the dispersed phase is present on the microstructured, anisotropic surface. Surface structured articles are useful, for example, for marine applications (e.g., surfaces in contact with water (e.g., fresh water, ocean water)) such as boats, ships, piers, oil rigs, decks, and roofing materials.

Surface structured articles and methods of making the same

A film is described comprising a first film layer having a Tg ranging from 30&#xb0; C. to 60&#xb0; C. The first film layer comprises a (meth)acrylic polymer and polyvinyl acetal polymer composition. The film further comprises a second layer proximate the first film layer. The second layer is different than the first film layer. The second may be a cured (meth)acrylic polymer film or coating; a backing such as thermoplastic polymer, woven or nonwoven fabrics, metal foils, paper, foams; or a coverfilm such as a fluoropolymer.

Acrylic polyvinyl acetal films comprising a second layer

Various embodiments disclosed relate to multilayer films including hidden fluorescent features. The present disclosure includes a multilayer optical film including an isotropic multilayer optical film having first and second opposed major surfaces. The isotropic multilayer optical film reflects at least 50% of a light that is at least one of ultraviolet light or visible light, having an incident angle less than a cutoff angle from normal to the first major surface of the isotropic multilayer optical film, wherein the cutoff angle is in a range from 10&#xb0; to 70&#xb0;. The isotropic multilayer optical film allows at least 50% of the light having an incident angle of more than the cutoff angle from normal to the first major surface of the isotropic multilayer optical film to pass through the isotropic multilayer optical film. The isotropic multilayer optical film includes a marking on the second major surface of the isotropic multilayer optical film, the marking including at least one fluorescent compound. Various embodiments of multilayer optical films described herein are useful, for example, as anti-counterfeiting features, such as in identification documents or cards, currency, labels for pharmaceuticals or other high value products, or financial cards.

Multilayer film including hidden fluorescent features

Growing community of inventors

Scandia, MN, United States of America

Timothy J Hebrink