Abstract: An electric nail gun includes a main body unit, a hammer unit, and a motor unit. The hammer unit includes a hammer member that is adapted for striking a nail, and a resilient member that has two opposite ends respectively abutting against the hammer member and the main body unit. The resilient member of the hammer unit constantly provides a hammer restoring force for the hammer member to move in a striking direction for striking the nail. The motor unit is mounted to the main body unit, and includes a lifting wheel. The lifting wheel has at least one pushing portion that separably engages the hammer member, and that is operable to push the hammer member to move in an energy storage direction opposite to the striking direction such that the resilient member of the hammer unit is compressed and provides the hammer restoring force to the hammer member.

Abstract: An electrochromic composition is provided. The electrochromic composition includes 0.5˜10 parts by weight of a first oxidizable polymer, 0.5˜10 parts by weight of a reducible organic compound, 0.5˜20 parts by weight of an electrolyte, and 60˜98.5 parts by weight of a solvent. The first oxidizable polymer is a polymer of 1 molar part of diamine and 0.1˜20 molar parts of dicarboxylic acid, diacyl chloride, or dianhydride, a mixture of the aforementioned polymers, or a copolymer of the aforementioned polymers. An electrochromic element including the aforementioned electrochromic composition is also provided.

Abstract: An electrochromic composition is provided. The electrochromic composition includes 0.5˜10 parts by weight of a first oxidizable polymer, 0.5˜10 parts by weight of a reducible organic compound, 0.5˜20 parts by weight of an electrolyte, and 60˜98.5 parts by weight of a solvent. The first oxidizable polymer is a polymer of 1 molar part of diamine and 0.1˜20 molar parts of dicarboxylic acid, diacyl chloride, or dianhydride, a mixture of the aforementioned polymers, or a copolymer of the aforementioned polymers. An electrochromic element including the aforementioned electrochromic composition is also provided.

Abstract: The present invention relates to a flexible and transparent polyimide laminate and manufacturing method thereof. The flexible and transparent polyimide laminate comprises a conductive layer, an adhesive layer and a polyimide substrate. The conductive layer includes a plurality of metal nanowires, and is attached on the polyimide substrate by the adhesive layer. The adhesive layer is an insoluble polyimide film and is polymerized by aromatic dianhydride and one of the following monomer: alicyclic diamines, fluorine-containing diamines, and the combination thereof.

Abstract: The present invention relates to a stabilized monomer dispersion containing inorganic oxide nanoparticles with high refractive index in which the refractive index of the inorganic oxide nanoparticles is greater than 1.65 and the average particle size of the high refractive inorganic oxide nanoparticles ranges from 1 to 100 nm and its content is in a range of from 1.0% by weight to 10.0% by weight based on the total weight of the monomer dispersion. The present invention also relates to a process for preparing the stabilized monomer dispersion containing high refractive inorganic oxide nanoparticles.

Abstract: A transparent electrochromic polymer is provided, which is polymerized of 1 molar part of a diamine and 1 to 4 molar parts of epoxy compound. The diamine is Formula 1, Formula 2, or combinations thereof, and the epoxy compound is Formula 12, Formula 13, or combinations thereof. The disclosed also provides an electrochromic device, including a first transparent conductive layer, an electrochromic layer on the first transparent conductive layer, and an electrolyte layer on the electrolyte layer, wherein the electrochromic layer is the transparent electrochromic polymer, and a second transparent conductive layer on the electrolyte layer.

Abstract: The present invention relates to a flexible and transparent electrode and manufacturing method thereof. The flexible transparent electrode comprises an insoluble polyimide film as a substrate and metal nanowires as a conductor, wherein the insoluble polyimide film is polymerized by aromatic diamines and alicyclic diamines of thermal imidization. In addition, the coating method of polyimides of the present invention not only improves the adhesion and dispersion between metal nanowires and substrate, but also exhibits good thermal stability; moreover, the transparent electrode keeps the effectiveness even in high temperature processing conditions such as annealing, laser, plasma or other severe operation environment. Using the step transfer printing method can produces the transparent electrode product with smooth surfaces, thermo stability, and organic solvent resistance, so as to improve the adhesion of metal nanowires and lower the resistance of the transparent electrode.

Abstract: The present invention relates to a stabilized monomer dispersion containing inorganic oxide nanoparticles with high refractive index in which the refractive index of the inorganic oxide nanoparticles is greater than 1.65 and the average particle size of the high refractive inorganic oxide nanoparticles ranges from 1 to 100 nm and its content is in a range of from 1.0% by weight to 10.0% by weight based on the total weight of the monomer dispersion. The present invention also relates to a process for preparing the stabilized monomer dispersion containing high refractive inorganic oxide nanoparticles.

Abstract: A transparent electrochromic polymer is provided, which is polymerized of 1 molar part of a diamine and 1 to 4 molar parts of epoxy compound. The diamine is Formula 1, Formula 2, or combinations thereof, and the epoxy compound is Formula 12, Formula 13, or combinations thereof. The disclosed also provides an electrochromic device, including a first transparent conductive layer, an electrochromic layer on the first transparent conductive layer, and an electrolyte layer on the electrolyte layer, wherein the electrochromic layer is the transparent electrochromic polymer, and a second transparent conductive layer on the electrolyte layer.

Abstract: The present invention relates to novel polyimidothioethers-inorganic nanoparticle hybrid material, which exhibit good surface planarity, thermal dimensional stability, tunable refractive index, and high optical transparency upon forming into films. The present invention also relates to polyimidothioethers which is an intermediate for preparing the present hybrid material, and their preparation.

Abstract: The present invention relates to novel polyimidothioethers-inorganic nanoparticle hybrid material, which exhibit good surface planarity, thermal dimensional stability, tunable refractive index, and high optical transparency upon forming into films. The present invention also relates to polyimidothioethers which is an intermediate for preparing the present hybrid material, and their preparation.

Abstract: The present invention relates to a stabilized monomer dispersion containing inorganic oxide nanoparticles with high refractive index in which the refractive index of the inorganic oxide nanoparticles is greater than 1.65 and the average particle size of the high refractive inorganic oxide nanoparticles ranges from 1 to 100 nm and its content is in a range of from 1.0% by weight to 10.0% by weight based on the total weight of the monomer dispersion. The present invention also relates to a process for preparing the stabilized monomer dispersion containing high refractive inorganic oxide nanoparticles.

Abstract: Provided is a pentaaryldiamine-containing bismaleimide compound of Formula (I): wherein Ar1 to Ar5 are independently C6-C12 aryl; and Ar4 and Ar5 are optionally substituted by one or more substitutent(s) selected from the group consisting of C1-C6 alkyl, C1-C6 alkoxy, and cyano. The compound of Formula (I) is obtained by a method including the steps of reacting a diamine with maleic anhydride in a solvent to form an amic acid, and cyclodehydrating the amic acid in the presence of a catalyst and a dehydrating agent. The compound of Formula (I) has a nonlinear and asymmetric structure, is amorphous, and is readily soluble in a variety of organic solvents so that the toughness of the product made there from can be improved and processing of the compound can be simplified.

Abstract: A pentaaryldiamine-containing bismaleimide compound of Formula (I): is provided, wherein Ar1 to Ar5 are independently C6-C12 aryl, and Ar4 and Ar5 may be optionally substituted. The compound of Formula (I) is obtained by steps of reacting diamine with maleic anhydride in a solvent to form an amic acid, and cyclodehydrating the amic acid in the presence of a catalyst and a dehydrating agent. The compound of Formula (I) with a nonlinear and asymmetric structure is amorphous and is readily soluble in a variety of organic solvents, such that the toughness of the product made therefrom can be improved and processing of the compound can be simplified. Furthermore, the compounds of Formula (I) having cyano substituents on the aromatic ring may exhibit better flame retardancy and heat resistance, higher oxidative stability, electron-withdrawing property etc., such that these compound have wider application in industry.

Abstract: Disclosed is a wholly aromatic polyamide prepared by reacting 1,4-naphthyl or 2,6-naphthyl containing diacids with aromatic diamines. The polymers of the invention are readily soluble in a variety of organic solvents including DMAc, NMP and pyridine, and have good thermal stability. Transparent, tough and flexible films of these polymers can be cast from the solutions thereof and these polyamides are easily processable high-performance polymer materials.

Abstract: New aromatic dicarboxylic acids, 1,4- or 2,6-Bis(p-carboxyphenoxy)naphthyl is prepared by the reaction of p-fluorobenzonitrile with 1,4-naphthalenediol, followed by hydrolysis. Wholly aromatic polyamides having superior solubility in a variety of organic solvents and have good thermal stability can be obtained by reacting the new aromatic dicarboxylic acids with aromatic diamines. Transparent, tough and flexible films of these polyamides can be cast from the solutions thereof and these polyamides are easily processable high-performance polymer materials.

Abstract: New aromatic dicarboxylic acids, 1,4- or 2,6-Bis(p-carboxyphenoxy)naphthyl is prepared by the reaction of p-fluorobenzonitrile with 1,4-naphthalenediol, followed by hydrolysis. Wholly aromatic polyamides having superior solubility in a variety of organic solvents and have good thermal stability can be obtained by reacting the new aromatic dicarboxylic acids with aromatic diamines. Transparent, tough and flexible films of these polyamides can be cast from the solutions thereof and these polyamides are easily processable high-performance polymer materials.