Abstract: The present invention provides a polyvinyl alcohol graft copolymer including a polyvinyl alcohol main chain. The polyvinyl alcohol graft copolymer includes branched chains including structural units derived from the following monomers: (a) a fluorine-including ethylenically unsaturated monomer, (b) an ethylenically unsaturated carboxylic acid monomer, and (c) an ethylenically unsaturated amide monomer. The present invention also provides an aqueous binder composition, and an electrode slurry composition including the polyvinyl alcohol graft copolymer.

Abstract: The present disclosure relates to an acrylic modified polyester resin, and specifically, a modified polyester resin prepared by grafting an acrylic monomer to a polyester prepolymer. The polyester prepolymer is formed from pentaerythritol, a polyol monomer, an organic polycarboxylic acid monomer and a cycloalkanedicarboxylic acid monomer and contains a double bond on its backbone. The present disclosure also relates to a method for preparing the acrylic modified polyester resin.

Abstract: The present invention provides a silicon-carbon composite which contains a body having a core-shell structure and a polymer modification layer. The core of the body contains a silicon-containing particle. The shell of the body is a carbon encapsulation layer. The polymer modification layer is located on the external surface of the shell of the body and encapsulates the body. The polymer modification layer comprises a polymer selected from the group consisting of polyester, polyfluorocarbon, polyvinyl alcohol, polyacrylic acid, cellulose and a combination thereof.

Abstract: The invention provides a silicon-based material and a method for producing the same. In all X-ray diffraction pattern obtained by using Cu K? rays, the silicon-based material includes the following characteristic peaks: (A) a characteristic peak at 2?=23°±1° with an intensity IA; (B) a characteristic peak at 2?=28°±0.5° with an intensity IB; (C) a characteristic peak at 2?=48°±1° with an intensity IC; and (D) a characteristic peak at 2?=56°±1° with an intensity ID, wherein: 1.2?IB/IA?1.7; 1.8?IB/IC?2.3; and 1.6?IB/ID?3.0. The present invention also provides a battery negative electrode including the silicon-based material.

Abstract: A photosensitive dry film and uses of the same are provided. The photosensitive dry film comprises a support layer and a photosensitive resin layer disposed on the support layer, wherein the support layer has a first surface and a second surface opposite the first surface, and the first surface is in contact with the photosensitive resin layer and has a non-smooth structure.

Abstract: The present invention provides a polyvinyl alcohol graft copolymer including a polyvinyl alcohol main chain. The polyvinyl alcohol graft copolymer includes branched chains including structural units derived from the following monomers: (a) a fluorine-including ethylenically unsaturated monomer, (b) an ethylenically unsaturated carboxylic acid monomer, and (c) an ethylenically unsaturated amide monomer. The present invention also provides an aqueous binder composition, and an electrode slurry composition including the polyvinyl alcohol graft copolymer.

Abstract: The present invention provides an amic acid ester oligomer having a structure of Formula (1) or (1?): wherein G, P, R, Rx, D, E and m are those as defined in the specification. The present invention also provides a polyimide precursor composition or a photosensitive polyimide precursor composition comprising the amic acid ester oligomer, as well as a polyimide prepared from the composition.

Abstract: The present invention relates to a method for preparing a patterned polyimide coverlay on a substrate. The method includes: providing a polyimide dry film including a carrier and a non-photosensitive polyimide layer on the carrier, the non-photosensitive polyimide layer containing (i) a polyimide precursor or soluble polyimide and (ii) a solvent; forming a predetermined pattern in the polyimide dry film; laminating the patterned polyimide dry film onto a substrate in such a manner that the non-photosensitive polyimide layer faces the substrate; and forming a patterned polyimide coverlay by heating.

Abstract: An aromatic liquid crystal polyester, having repeating units represented by formulae (1) and (2), respectively: where R?, Ar1, Ar2, Ar3, X, Y1, Y2 and Z are those as defined in the specification. Also, a liquid crystal polyester composition including the aromatic liquid crystal polyester and a solvent. The composition has an improved viscosity stability. Also, a liquid crystal polyester film prepared from the liquid crystal polyester composition and a method for manufacturing the same. The liquid crystal polyester film according to the present disclosure has excellent properties such as a low hygroscopicity and a low dissipation factor (Df).

Abstract: The present disclosure pertains to an electromagnetic-wave shielding film and a preparation method thereof. The electromagnetic-wave shielding film includes a first metal layer, an insulating layer, and a second metal layer. The first metal layer has two opposite surfaces. The insulating layer is disposed on one of the surfaces of the first metal layer. The second metal layer is disposed on the other surface of the first metal layer and contains nano metal particles and an binder. The electromagnetic-wave shielding film can be used in a printed circuit board, and shows a satisfactory electromagnetic wave shielding effect.

Abstract: The present disclosure provides a conductive polymer material. The conductive polymer material includes a conductive polymer having structural units derived from the following monomers: (a) a monomer of formula (I): and (b) a monomer having an ethylenically unsaturated group which has the following formula: wherein A, X, R1, R2, R6 to R9, q and w are described in the specification. The conductive polymer material of the present disclosure has high withstand voltage and high capacitance and can be used for the preparation of solid capacitors or hybrid capacitors. In addition, the conductive polymer material according to the present disclosure has high electrical conductivity and good water washing resistance and is thus useful for an antistatic coating or smart fabrics.

Abstract: The present invention relates to a coating composition, which includes: (A) a polysiloxane resin, including a unit derived from a siloxane monomer, a siloxane oligomer, or a combination thereof; and (B) inorganic particles, including first SiO2 particles with a particle size ranging from 15 nm to 100 nm, and second SiO2 particles with a particle size ranging from 3 nm to <15 nm. The present invention further relates to a coating layer for enhancing light transmittance that is formed by the coating composition. According to the present invention, by using at least two types of inorganic particles with specific particle sizes to form a geometric stack, the space of pores can be increased, and therefore, the porosity of the coating layer can be increased, thereby reducing the optical refractive index of the coating layer and achieving an effect of enhancing light transmittance.

Abstract: The present disclosure relates to a polyimide precursor composition comprising an amic acid ester oligomer of formula (I): wherein r, Rx, G, P and R are as defined in the specification. Also, a use of the polyimide precursor composition and a polyimide made from the polyimide precursor composition.

Abstract: An electrolyte composition including a heterocyclic compound, an electrolyte salt and a solvent is provided. The heterocyclic compound includes, in the heterocyclic ring: (a) at least two nitrogen atoms each of which is bonded to a —Si(R1)3 group; and (b) at least one carbonyl group (C?O) or thiocarbonyl group (C?S), wherein R1 is a C1-3 alkyl group or an aryl group. The electrolyte composition of the present disclosure is suitable for an electrochemical device. Electrochemical devices, in particular batteries, using the electrolyte composition of else present disclosure are capable of efficiently inhibiting the moisture and acidity therein, thereby stabilizing the electrolyte salt therein, and preventing the electrolyte salt from being further decomposed and from producing hydrogen fluoride.

Abstract: The present disclosure relates to an acrylic modified polyester resin, and specifically, a modified polyester resin prepared by grafting an acrylic monomer to a polyester prepolymer. The polyester prepolymer is formed from pentaerythritol, a polyol monomer, an organic polycarboxylic acid monomer and a cycloalkanedicarboxylic acid monomer and contains a double bond on its backbone. The present disclosure also relates to a method for preparing the acrylic modified polyester resin.

Abstract: The present disclosure provides a polyimide resin having at least two glass transition temperatures measured by dynamic mechanical analysis (DMA). Also, a metal-clad laminate including the polyimide resin.

Abstract: The present disclosure relates to a polyimide precursor composition comprising an antic acid ester oligomer of formula (I): wherein r, Rx, G, P and R are as defined in the specification. Also, a use of the polyimide precursor composition and a polyimide made from the polyimide precursor composition.

Abstract: A polysiloxane resin, which includes a reaction product of the following: (a) a non-linear polysiloxane oligomer having a C1-3 alkoxy or a hydroxy group and a weight average molecular weight of about 500-6000; (b) a linear polysiloxane oligomer of Formula (II): and (c) a siloxane monomer, wherein R3, R4, and m are as defined in the specification. Also, a coating composition including the polysiloxane resin.

Abstract: The present disclosure provides a photocurable coating composition, including: (a) a (meth)acrylate monomer or oligomer with at least four functional groups; (b) a difunctional (meth)acrylate monomer, (c) a monofunctional (meth)acrylate monomer, and (d) an initiator. The difunctional (meth)acrylate monomer is present in an amount of 30 to 70 wt % based on the total weight of the photocurable coating composition. The present disclosure also provides an optical film having a microstructure layer made from the photocurable coating composition. The optical film can be as a light guide film in a back light module of a display.

Abstract: The present disclosure provides a metal clad laminate, a preparation method thereof, and a method for preparing a flexible circuit board by using the same. The metal clad laminate of the present disclosure includes a first metal foil, a first polyimide layer directly disposed on the first metal foil, a second metal foil, and a second polyimide layer directly disposed on the second metal foil, the first polyimide layer being in contact with the second polyimide layer. The metal clad laminate of the present disclosure is equivalent to a double-sided flexible copper clad laminate (FCCL) in structure, is superior to a single-sided FCCL in terms of mechanical performance in reducing warpage, and has the advantage of being useful for circuit fabrication simultaneously on both sides thereof.