Abstract: The present invention is directed to a cover window assembly comprising a multi-layer films of polymeric and inorganic materials for a variety of articles, and the related articles and methods. The cover window assembly exhibits high resistance to strain and impact damage for the articles including display devices, particularly flexible display devices.

Abstract: A cover window for a display includes a multilayer polymer film. The multilayer polymer film includes a first transparent, colorless polymer layer having a first elastic modulus and a second transparent, colorless polymer layer having a second elastic modulus. Each of the first and second transparent, colorless polymer layers include a polyimide, a polyamide imide, or a block copolymer of a polyimide. The polymers of both the first and second transparent, colorless polymer layers are cross-linked. The first elastic modulus is different from the second elastic modulus. The first and second transparent, colorless polymer layers are bonded by consolidation and cross-linking. The first transparent, colorless layer of the multilayer polymer film is the layer farthest from the display.

Abstract: In a first aspect, a consolidated polymer film includes a first polymer layer having a first elastic modulus, wherein the first polymer layer comprises a non-melt-processible polymer comprising a polyimide, a poly(amide-imide), a block copolymer of a polyimide or a poly(amide-imide) or a mixture thereof, and a second polymer layer having a second elastic modulus, wherein the second polymer layer comprises a polyimide, a poly(amide-imide), a block copolymer of a polyimide or a poly(amide-imide) or a mixture thereof. A minor surface of the first polymer layer is in contact with a minor surface of the second polymer layer. The first elastic modulus is different from the second elastic modulus. The first and second polymer layers are bonded by consolidation.

Abstract: In a first aspect, a multilayer polymer film includes a first transparent, colorless polymer layer comprising a polyimide, a polyamide imide, or a block copolymer of a polyimide and a second transparent, colorless polymer layer comprising a polyimide, a polyamide imide, or a block copolymer of a polyimide. An elastic modulus of the first transparent, colorless polymer layer is different than an elastic modulus of the second transparent, colorless polymer layer. The first and second transparent, colorless polymer layers are bonded by consolidation. In a second aspect, a cover window for a display includes the multilayer polymer film of the first aspect. The first transparent, colorless layer of the multilayer polymer film is the layer farthest from the display.

Abstract: A cover window for a display includes a multilayer polymer film. The multilayer polymer film includes a first transparent, colorless polymer layer having a first elastic modulus and a second transparent, colorless polymer layer having a second elastic modulus. Each of the first and second transparent, colorless polymer layers include a polyimide, a polyamide imide, or a block copolymer of a polyimide. The polymers of both the first and second transparent, colorless polymer layers are cross-linked. The first elastic modulus is different from the second elastic modulus. The first and second transparent, colorless polymer layers are bonded by consolidation and cross-linking. The first transparent, colorless layer of the multilayer polymer film is the layer farthest from the display.

Abstract: In a first aspect, a multilayer polymer film includes a first polymer layer having a first elastic modulus and a second polymer layer having a second elastic modulus. The first polymer layer includes a polyimide, a polyamide imide, a block copolymer of a polyimide or a polyamide imide or a mixture thereof. The second polymer layer includes a polyimide, a polyamide imide, a block copolymer of a polyimide or a polyamide imide or a mixture thereof. The first elastic modulus is different from the second elastic modulus. The first and second polymer layers are bonded by consolidation. In a second aspect, a cover window for a display includes a hard coat layer and the multilayer polymer film of the first aspect. The first polymer layer of the multilayer polymer film is the layer farthest from the display and is adhered to the hard coat layer.

Abstract: In a first aspect, a multilayer polymer film includes a first polymer layer having a first elastic modulus and a second polymer layer having a second elastic modulus. The first polymer layer includes a polyimide, a polyamide imide, a block copolymer of a polyimide or a polyamide imide or a mixture thereof. The second polymer layer includes a polyimide, a polyamide imide, a block copolymer of a polyimide or a polyamide imide or a mixture thereof. The first elastic modulus is different from the second elastic modulus. The first and second polymer layers are bonded by consolidation. In a second aspect, a cover window for a display includes a hard coat layer and the multilayer polymer film of the first aspect. The first polymer layer of the multilayer polymer film is the layer farthest from the display and is adhered to the hard coat layer.

Abstract: In a first aspect, a multilayer polymer film includes a first substantially transparent polymer layer having a first elastic modulus and a second substantially transparent polymer layer having a second elastic modulus. The first elastic modulus is different from the second elastic modulus and the first and second substantially transparent polymer layers are bonded by consolidation. In a second aspect, a cover window includes the multilayer polymer film of the first aspect and a layer of a transparent material. The layer of a transparent material has a speed of sound of at least 2000 m/s. In a third aspect, an electronic device includes the cover window of the second aspect.

Abstract: In a first aspect, a multilayer polymer film includes a first transparent, colorless polymer layer comprising a polyimide, a polyamide imide, or a block copolymer of a polyimide and a second transparent, colorless polymer layer comprising a polyimide, a polyamide imide, or a block copolymer of a polyimide. An elastic modulus of the first transparent, colorless polymer layer is different than an elastic modulus of the second transparent, colorless polymer layer. The first and second transparent, colorless polymer layers are bonded by consolidation. In a second aspect, a cover window for a display includes the multilayer polymer film of the first aspect. The first transparent, colorless layer of the multilayer polymer film is the layer farthest from the display.

Abstract: An unconsolidated impact and penetration resistant laminate comprises a plurality of cross-plied sheets, each cross-plied sheet further comprising (i) first and second layers of fibrous or non-fibrous ultra-high molecular weight polyethylene and (ii) first and second layers of thermoplastic adhesive, each adhesive layer having a basis weight of no greater than 5 gsm, wherein (a) the layers of polyethylene and thermoplastic adhesive alternate within the sheet, (b) at least 50 percent of the polyethylene layers are arranged such that the orientation of the first polyethylene layer is offset with respect to the orientation of the second polyethylene layer, and (c) the plurality of cross-plied sheets form a stack that, when subjected to compaction at a pressure of 255 bar and a temperature of 132 degrees C., will not suffer a pressure loss greater than 8 bar within the first two minutes as measured by Test Method B.

Abstract: An impact penetration resistant laminate comprises a plurality of alternating layers of (i) non-fibrous ultra-high molecular weight polyethylene monolayers and (ii) a thermoplastic adhesive, the adhesive having a basis weight of no greater than 5 gsm and a zero-shear-rate viscosity, determined from an oscillating disc rheometer in a frequency sweep between 0.1 rad/s and 100 rad/s, conducted per ASTM D 4440 at 125° C., and calculated from fitting to a Carrea-Yasuda four parameter model, of at least 1500 Pa-s, wherein (a) at least 90 percent of the monolayers are arranged such that the orientation of one monolayer is offset with respect to the orientation of an adjacent monolayer, and (b) the modulus of elasticity through the thickness of the laminate is at least 3 GPa.

Abstract: An impact penetration resistant laminate comprises a plurality of alternating layers of (i) non-fibrous ultra-high molecular weight polyethylene monolayers and (ii) a thermoplastic adhesive, the adhesive having a basis weight of no greater than 5 gsm and a zero-shear-rate viscosity, determined from an oscillating disc rheometer in a frequency sweep between 0.1 rad/s and 100 rad/s, conducted per ASTM D 4440 at 125° C., and calculated from fitting to a Carrea-Yasuda four parameter model, of at least 1500 Pa-s, wherein (a) at least 90 percent of the monolayers are arranged such that the orientation of one monolayer is offset with respect to the orientation of an adjacent monolayer, and (b) the modulus of elasticity through the thickness of the laminate is at least 3 GPa.

Abstract: An impact penetration resistant laminate comprises a plurality of alternating layers of (i) non-fibrous ultra-high molecular weight polyethylene monolayers and (ii) a thermoplastic adhesive, the adhesive having a basis weight of no greater than 5 gsm and a zero-shear-rate viscosity, determined from an oscillating disc rheometer in a frequency sweep between 0.1 rad/s and 100 rad/s, conducted per ASTM D 4440 at 125° C., and calculated from fitting to a Carrea-Yasuda four parameter model, of at least 1500 Pa-s, wherein (a) at least 90 percent of the monolayers are arranged such that the orientation of one monolayer is offset with respect to the orientation of an adjacent monolayer, and (b) the modulus of elasticity through the thickness of the laminate is at least 3 GPa.

Abstract: An unconsolidated impact and penetration resistant laminate comprises a plurality of cross-plied sheets, each cross-plied sheet further comprising (i) first and second layers of fibrous or non-fibrous ultra-high molecular weight polyethylene and (ii) first and second layers of thermoplastic adhesive, each adhesive layer having a basis weight of no greater than 5 gsm, wherein (a) the layers of polyethylene and thermoplastic adhesive alternate within the sheet, (b) at least 50 percent of the polyethylene layers are arranged such that the orientation of the first polyethylene layer is offset with respect to the orientation of the second polyethylene layer, and (c) the plurality of cross-plied sheets form a stack that, when subjected to compaction at a pressure of 255 bar and a temperature of 132 degrees C., will not suffer a pressure loss greater than 8 bar within the first two minutes as measured by Test Method B.

Abstract: Disclosed herein are processes comprising the steps of providing a porous mat comprising carbon nanotubes having an average longest dimension in the range of 1 micron to 1000 microns, wherein at least a portion of the carbon nanotubes are entangled; contacting the mat with one or more condensation polymer precursors, and optionally a catalyst; polymerizing the one or more polymer precursors in the presence of the mat at a temperature in the range of about 180° C. to about 360° C. to form a nonporous carbon nanotube-polymer composite comprising a mat of carbon nanotubes embedded in a condensation polymer produced from the polymer precursors, wherein the carbon nanotubes are present in the composite in an amount ranging from about 15 weight percent to about 80 weight percent, based on the weight of the carbon nanotubes and the condensation polymer; and optionally, curing the carbon nanotube-polymer composite.

Abstract: Disclosed herein are processes comprising the steps of providing a porous mat comprising carbon nanotubes having an average longest dimension in the range of 1 micron to 1000 microns, wherein at least a portion of the carbon nanotubes are entangled; contacting the mat with one or more condensation polymer precursors, and optionally a catalyst; polymerizing the one or more polymer precursors in the presence of the mat at a temperature in the range of about 180° C. to about 360° C. to form a nonporous carbon nanotube-polymer composite comprising a mat of carbon nanotubes embedded in a condensation polymer produced from the polymer precursors, wherein the carbon nanotubes are present in the composite in an amount ranging from about 15 weight percent to about 80 weight percent, based on the weight of the carbon nanotubes and the condensation polymer; and optionally, curing the carbon nanotube-polymer composite.

Abstract: Disclosed herein are ballistic resistant articles comprising one or more woven fabric layers woven from yarns having a tenacity of at least 7.3 grams per dtex and a modulus of at least 100 grams per dtex and one or more sheet layers comprising a carbon nanotube-polymer composite, the composite comprising randomly oriented carbon nanotubes embedded in a condensation polymer.

Abstract: A fiber-resin composite useful in a ballistic resistant armor article comprises a first nonwoven layer comprising a first plurality of yarns arranged parallel with each other and a second nonwoven layer comprising a second plurality of yarns arranged parallel with each other. The first plurality of yarns have an orientation in a direction that is different from the orientation of the second plurality of yarns, The composite further comprises a binding resin partially coating portions of internal surfaces of the yarns and partially filling some space between the filaments of the yarns so as to leave discrete areas of yarn surfaces that are free from binder resin coating, A viscoelastic resin coats at least portions of external surfaces of the yarns and fills in some space between the filaments of the yarns. A binding yarn is interlaced transversely within the first and second nonwoven layers.

Abstract: A fabric assembly particularly useful in soft body armor has two or more first sections each containing a number of fabrics made from yarns having a tenacity of at least 7.3 grams per dtex and a modulus of at least 100 grams per dtex. Each first section is comprised of connected and compacted fabric layers that are secured together by connectors having a force to break in tension not greater than 65 N. The connectors are concentrated along a series of parallel connector lines as viewed from the fabric on both outer surfaces of the first section, the connector lines being spaced from 1.8 mm to 51 mm apart defining regions between the connector lines where the fabric layers remain unconnected.

Abstract: A fabric assembly particularly useful as soft body armor has two or more separate sections each containing a number of fabrics made from yarns having a tenacity of at least 7.3 grams per dtex and a modulus of at least 100 grams per dtex. At least one of the sections in the fabric assembly is comprised of compressed fabrics attached by connector yarns having a force to break in tension not greater than 65N concentrated along a series of parallel connector lines as viewed from the fabric on both outer surfaces of the first section, the connector lines being spaced from 1.8 mm to 51 mm apart defining regions between the connector lines where the fabric layers remain unconnected.