3m Innovative Properties Company

Huiwen Tai

Joan M Frankel

Michael F Weber

Shandon Dee Hart

William D Coggio

William B Black

Robert R Owings

Andrew John Ouderkirk

Audrey A Sherman

Richard John Pokorny

Robert L Brott

Patrick R Fleming

Jeffrey O Emslander

Diane North

Michael A Johnson

John P Baetzold

William J Kopecky

Kevin W Gotrik

Stephen P Maki

Mark B O'Neill

Thomas J Ludemann

Carsten Franke

Scott J Jones

Bhaskar V Velamakanni

Jeffrey A Peterson

Bert T Chien

Margaret M Vogel-Martin

David J Rowe

Joan M Strobel

Matthew E Sousa

John A Nielsen

Bradley L Givot

John F Van Derlofske, Iii

Daniel J Zillig

Brent A Hedding

Anish Kurian

Gregory L Bluem

Kevin D Hagen

James A Phipps

Jeanne M Bruss

Chiu Ping Wong

Ellen R Bösl

Donovan C Karg, Jr

Meghan A Bradley

Hot melt processable composition mixtures include an acid-functional (meth)acrylate-based adhesive composition and a zinc di-(meth)acrylate salt. The adhesive composition has a hot melt processing temperature, and the zinc salt has a melting point that is higher than the hot melt processing temperature of the adhesive composition. The mixture is hot melt processable, and upon application to a substrate, the mixture forms an ionically crosslinked layer with thermally reversable ionic crosslinks.

Hot melt processable adhesive with ionic crosslinkers

A transfer article with a thickness of less than 3 micrometers includes a first acrylate layer that is releasable from a metal or doped semiconductor release layer at a release value of from 2 to 50 grams/inch. The article includes a functional layer overlaying the first acrylate layer. The functional layer includes at least one microfractured inorganic layer about 3 nanometers to about 200 nanometers thick, which has a plurality of toolmarks interspersed with cracks.

Patterned transfer articles

A stretchable reflective color-shifting film comprises a stretchable transparent polymer layer; a semi-transmissive metal layer; a transparent spacer layer; a reflective metal layer; an adhesive layer; and a stretchable base film layer. When the film body is stretched by 25%, the peak total reflectance stretched is at 80% of the peak total reflectance when the film body is unstretched according to the Total Reflectivity Test.

Conformable color shifting laminates

Low loss, high reflectivity wide band mirror films provide a desired mix of specular reflection and diffuse reflection or scattering to provide semi-specular reflectivity. The mirror films generally include both a specularly reflective multilayer optical film (MOF) having a wide reflection band, and a scattering layer. In some cases a low refractive index TIR layer is sandwiched between the MOF and the scattering layer. In other cases the scattering layer contacts the MOF directly. In embodiments that include the TIR layer, the TIR layer preferably has a nanovoided morphology and includes a plurality of particles and a polymer binder. In embodiments wherein the scattering layer contacts the MOF directly, the scattering layer preferably also has a nanovoided morphology and includes a plurality of particles and a polymer binder.

Wide band semi-specular mirror film incorporating nanovoided polymeric layer

A multilayer polymeric reflector is provided which comprises: a) a plurality of first optical layers, each first optical layer comprising a polyester having terephthalate comonomer units and ethylene glycol comonomer units, the polyester having a glass transition temperature, where each first optical layer is oriented, and b) a plurality of second optical layers disposed in a repeating sequence with the plurality of first optical layers, each second optical layer comprising a blend of polymethyl methacrylate (PMMA) and polyvinylidene fluoride (PVDF), where the blend has a glass transition temperature less than the glass transition temperature of the polyester comprising the first optical layers, and where the amount of PVDF in the PMMA/PVDF blend is greater than and not equal to about 40% and not more than about 65%. Articles comprising the multilayer polymeric reflector are also provided.

Multilayer polymeric reflector

The present disclosure includes a stretchable reflective film comprising a transparent polymer layer; a continuous metal layer comprising at least one of tin or indium; a non-reactive adhesive layer; and a stretchable film layer. The stretchable reflective film has at least 30% specular reflectivity when stretched by 50% of the unstretched length according to Specular Reflectivity Test Method.

Conformable reflective film having specified reflectivity when stretched at room temperature

The present disclosure provides decorative lights using prismatic film such as Optical Lighting Film (OLF) available from 3M Company, and a diffuse partial reflector. The decorative lights generate design styles and comfort for a light fixture, and can use solid state lighting such as Light Emitting Diodes (LEDs) to generate the light. The decorative lights can have an appearance that changes with the viewing angle of the light.

Decorative light

An optical film that includes a reflective polarizer and a stretched polymer film is disclosed. The stretched polymer film is laminated to the reflective polarizer, and the stretched polymer film exhibits a refractive index symmetry point at an angle of incidence in air of at least about 60 degrees in a plane of incidence parallel to a direction of greatest stretch.

Optical film

A polarizing film is made of multilayer polarizing fibers embedded within a matrix. The fibers are formed with layers of at least a first and a second polymer material. Layers of the first polymer material are disposed between layers of the second polymer material. At least one of the first and second polymer materials is birefringent. In some embodiments the thickness of the layers of at least one of the materials varies across the fiber, and may include layers are selected as quarter-wavelength thickness for light having a wavelength of more than 700 nm.

Multilayer polarizing fibers and polarizers using same

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Lake Elmo, MN, United States of America

Huiwen Tai