Abstract: Multi-layer electrochromic structures, and processes for assembling such structures, incorporating a cross-linked ion conducting polymer layer that maintains high adhesive and cohesive strength in combination with high ionic conductivity for an extended period of time, the ion conducting polymer layer characterized by electrochemical stability at voltages between about 1.3 V and about 4.4 V relative to lithium, lithium ion conductivity of at least about 10?5 s/cm, and lap shear strength of at least 100 kPa, as measured at 1.27 mm/min in accordance with ASTM International standard D1002 or D3163.

Abstract: The present disclosure describes methods of polyimide synthesis and polyimides made therefore. The method includes placing a tetracarboxylic compound and a solvent in a reaction vessel and adding a first amount of a diamine. The first amount of the diamine is not more than 99.5 mol % of the tetracarboxylic compound inside the reaction vessel. The method can include agitating the mixture and determining a viscosity of the mixture. The method can further include adding a second amount of the diamine. The last steps can be repeated until the viscosity increases to a target value. The target viscosity can be correlated to a peak weight-averaged molecular weight of the polyimide.

Abstract: The present invention relates to a method for producing an optical film, the method comprising: step (I) for dissolving a polyimide-based resin in a solvent to prepare a varnish; step (II) for applying the varnish onto a substrate to form a coating film; and step (III) for drying the coating film to form a film, wherein the polyimide-based resin contains a constitutional unit derived from an aliphatic diamine, the solvent in step (I) has a moisture absorption speed per unit area of 25% by mass/h m2 or more as measured by a Karl Fischer method, and a time T from the completion of the formation of the coating film in step (II) to the start of the drying of the coating film in step (III) satisfies the following equation (A): T < 0.0018 Vs ( A ) wherein Vs represents a moisture absorption speed per minute (% by mass/min) of the solvent as determined by a Karl Fischer method.

Abstract: The present invention relates to a method for producing a long optical film, the method comprising a step for preparing a varnish by dissolving a polyimide-based resin in a solvent, wherein the polyimide-based resin contains a constitutional unit derived from an aliphatic diamine, and a moisture absorption speed per unit area of the solvent is 25% by mass/h·m2 or less as determined by a Karl Fischer method.

Abstract: Multi-layer electrochromic structures, and processes for assembling such structures, incorporating a cross-linked ion conducting polymer layer that maintains high adhesive and cohesive strength in combination with high ionic conductivity for an extended period of time, the ion conducting polymer layer characterized by electrochemical stability at voltages between about 1.3 V and about 4.4 V relative to lithium, lithium ion conductivity of at least about 10?5 s/cm, and lap shear strength of at least 100 kPa, as measured at 1.27 mm/min in accordance with ASTM International standard D1002 or D3163.

Abstract: In one embodiment, a filament can comprise a thermoplastic polyimide, wherein the filament is adapted for use in a fused filament fabrication process and the thermoplastic polyimide may have a glass transition temperature not greater than 215° C. Three-dimensional bodies can be printed with the filament, wherein the three-dimensional bodies can have high strength values with even mechanical properties in printing direction and orthogonal to the printing direction.

Abstract: In one embodiment, a powder composition can comprise polyimide particles, wherein the polyimide particles can have a glass transition temperature of not greater than 200° C. and a crystallinity of not greater than 20%. The powder composition can be adapted for forming a three-dimensional polyimide-based body in a powder-based additive manufacturing process. In one aspect, the polyimide particles can have an average particle size (D50) of at least 20 microns and not greater than 120 microns, an amount of the polyimide particles can be at least 60 wt % based on the total weight of the powder composition; and a material of the polyimide particles is a polymerization product of at least one diamine monomer and at least one dianhydride monomer.

Abstract: Multi-layer electrochromic structures, and processes for assembling such structures, incorporating a cross-linked ion conducting polymer layer that maintains high adhesive and cohesive strength in combination with high ionic conductivity for an extended period of time, the ion conducting polymer layer characterized by electrochemical stability at voltages between about 1.3 V and about 4.4 V relative to lithium, lithium ion conductivity of at least about 10?5 s/cm, and lap shear strength of at least 100 kPa, as measured at 1.27 mm/min in accordance with ASTM International standard D1002 or D3163.

Abstract: Multi-layer electrochromic structures, and processes for assembling such structures, incorporating a cross-linked ion conducting polymer layer that maintains high adhesive and cohesive strength in combination with high ionic conductivity for an extended period of time, the ion conducting polymer layer characterized by electrochemical stability at voltages between about 1.3 V and about 4.4 V relative to lithium, lithium ion conductivity of at least about 10?5 s/cm, and lap shear strength of at least 100 kPa, as measured at 1.27 mm/min in accordance with ASTM International standard D1002 or D3163.

Abstract: An electrochromic multi-layer stack is provided. The multi-layer stack includes an electrochromic multi-layer stack having a first substrate, a first electrically conductive layer, a first electrode layer, an ion conductor layer, a second substrate, a second electrically conductive layer, and a second electrode layer. The multi-layer stack includes a redox element, wherein the redox element is electrically isolated from the first and second electrically conductive layers and the first and second electrode layer and is laterally adjacent to either the first electrically conductive layer and the first electrode, or the second electrically conductive layer and the second electrode layer. A method for controlling an electrochromic device is also provided.

Abstract: An electrochromic multi-layer stack is provided. The multi-layer stack includes an electrochromic multi-layer stack having a first substrate, a first electrically conductive layer, a first electrode layer, an ion conductor layer, a second substrate, a second electrically conductive layer, and a second electrode layer. The multi-layer stack includes a redox element, wherein the redox element is electrically isolated from the first and second electrically conductive layers and the first and second electrode layer and is laterally adjacent to either the first electrically conductive layer and the first electrode, or the second electrically conductive layer and the second electrode layer. A method for controlling an electrochromic device is also provided.

Abstract: An electrochromic multi-layer stack is provided. The multi-layer stack includes an electrochromic multi-layer stack having a first substrate, a first electrically conductive layer, a first electrode layer, an ion conductor layer, a second substrate, a second electrically conductive layer, and a second electrode layer. The multi-layer stack includes a redox element, wherein the redox element is electrically isolated from the first and second electrically conductive layers and the first and second electrode layer and is laterally adjacent to either the first electrically conductive layer and the first electrode, or the second electrically conductive layer and the second electrode layer. A method for controlling an electrochromic device is also provided.

Abstract: Multi-layer electrochromic structures, and processes for assembling such structures, incorporating a cross-linked ion conducting polymer layer that maintains high adhesive and cohesive strength in combination with high ionic conductivity for an extended period of time, the ion conducting polymer layer characterized by electrochemical stability at voltages between about 1.3 V and about 4.4 V relative to lithium, lithium ion conductivity of at least about 10?5 s/cm, and lap shear strength of at least 100 kPa, as measured at 1.27 mm/min in accordance with ASTM International standard D1002 or D3163.

Abstract: Multi-layer electrochromic structures, and processes for assembling such structures, incorporating a cross-linked ion conducting polymer layer that maintains high adhesive and cohesive strength in combination with high ionic conductivity for an extended period of time, the ion conducting polymer layer characterized by electrochemical stability at voltages between about 1.3 V and about 4.4 V relative to lithium, lithium ion conductivity of at least about 10?5 s/cm, and lap shear strength of at least 100 kPa, as measured at 1.27 mm/min in accordance with ASTM International standard D1002 or D3163.

Abstract: An electrochromic multi-layer stack is provided. The multi-layer stack includes an electrochromic multi-layer stack having a first substrate, a first electrically conductive layer, a first electrode layer, an ion conductor layer, a second substrate, a second electrically conductive layer, and a second electrode layer. The multi-layer stack includes a redox element, wherein the redox element is electrically isolated from the first and second electrically conductive layers and the first and second electrode layer and is laterally adjacent to either the first electrically conductive layer and the first electrode, or the second electrically conductive layer and the second electrode layer. A method for controlling an electrochromic device is also provided.

Abstract: An electrochromic multi-layer stack is provided. The multi-layer stack includes an electrochromic multi-layer stack having a first substrate, a first electrically conductive layer, a first electrode layer, an ion conductor layer, a second substrate, a second electrically conductive layer, and a second electrode layer. The multi-layer stack includes a redox element, wherein the redox element is electrically isolated from the first and second electrically conductive layers and the first and second electrode layer and is laterally adjacent to either the first electrically conductive layer and the first electrode, or the second electrically conductive layer and the second electrode layer. A method for controlling an electrochromic device is also provided.

Abstract: An electrochromic multi-layer stack is provided. The multi-layer stack includes an electrochromic multi-layer stack having a first substrate, a first electrically conductive layer, a first electrode layer, an ion conductor layer, a second substrate, a second electrically conductive layer, and a second electrode layer. The multi-layer stack includes a redox element, wherein the redox element is electrically isolated from the first and second electrically conductive layers and the first and second electrode layer and is laterally adjacent to either the first electrically conductive layer and the first electrode, or the second electrically conductive layer and the second electrode layer. A method for controlling an electrochromic device is also provided.