Abstract: The present invention is to provide a polyamide-imide which has a high regularity of molecular structure and few branched structures, does not contain hydrogen halide, is not required to be separated and purified in post processes, and can be suitably used as a film, a varnish, or a molding material; raw material salt of polyamide-imide and production method thereof. The polyamide-imide has a repeating unit represented by the general formula (1): in which R1, R2 represent independently a divalent residue having an aromatic ring, an aliphatic ring or an aliphatic hydrocarbon; R3, R4 represent independently a trivalent residue having an aromatic ring or an aliphatic ring; and an hydrogen atom bonding to the respective rings may be replaced by another atom or an atomic group.

Abstract: The present invention provides a ferromagnetic metal nanowire dispersion having an excellent dispersibility, from which a ferromagnetic metal nanowire film having an excellent electrical conductivity can be made. The present invention relates to a ferromagnetic metal nanowire dispersion comprising a ferromagnetic metal nanowire and a polymer compound.

Abstract: An object of the present invention is to provide a bismaleimide using an aliphatic diamine, in which acid components remaining as an impurity at a very small amount in the bismaleimide have been effectively removed, that is, a bismaleimide using an aliphatic diamine, an acid value of which has sufficiently been reduced, and a method for producing it. There are provided a bismaleimide using an aliphatic diamine as a diamine component, characterized in that an acid value thereof is 2 mg-KOH/g or less, and a method for producing the bismaleimide, comprising adding carbodiimide to a solution comprising a crude bismaleimide having an acid value of more than 2 mg-KOH/g, and reacting acid components in the crude bismaleimide with carbodiimide.

Abstract: An object of the present invention is to provide an industrially advantageous method for producing a bisimide dicarboxylic acid, which uses substantially no solvent and requires no granulation after completion of the reaction.

Abstract: A concealable film including 10 to 94% by mass of a crystalline polyamide resin, 1 to 40% by mass of an amorphous polyamide resin and 5 to 50% by mass of titanium oxide, with the proviso that the total content of these is 100% by mass.

Abstract: An object is to provide a method for easily producing maleimide (MI) in which trace amounts of residual acid components as impurities in a crude MI are efficiently reduced, that is, the acid value is sufficiently reduced. <1> A method for producing purified MI, comprising reducing an acid value of crude MI by 50% or more, by adding carbodiimide (CDI) to a solution comprising the crude MI to react an acid component in the crude MI with the CDI. <2> The method for producing purified MI, comprising adding 0.5% by mass or more and 8% by mass or less of the CDI with respect to a mass of the crude MI for reaction. <3> The method for producing purified MI, wherein the CDI is N,N?-diisopropyl carbodiimide (DIC). <4> The method for producing purified MI, comprising removing a urea derivative of the CDI (CDI-U) by-produced when reacting the acid component in the crude MI with the CDI.

Abstract: The present invention addresses the problem of providing a transparent, noncombustible sheet having excellent transparency but minimized blurring and color bleeding. The means for addressing the problem is a transparent noncombustible sheet including a glass fiber fabric and a cured resin composition layer impregnated into the glass fiber fabric; wherein, the cured resin composition layer is formed by curing a resin composition including a curable resin and a bifunctional (meth)acrylate, total light transmittance of the transparent noncombustible sheet being no less than 80%, and haze of the transparent noncombustible sheet being no more than 30%.

Abstract: A mold release sheet including a resin layer provided on a semi-aromatic polyimide resin film, wherein the resin layer contains an acid-modified polyolefin resin having a proportion of an acid-modified component of 2 to 6% by mass, and a crosslinking agent.

Abstract: There is provided a release film comprising a substrate film and a resin layer provided on at least one surface of a substrate film, wherein the resin layer comprises 100 parts by mass of an acid-modified polyolefin resin, 1 to 20 parts by mass of a crosslinking agent and 10 to 1,000 parts by mass of a polyvinyl alcohol having a saponification rate of 99% or lower.

Abstract: The present invention aims to provide a retroreflective material that exhibits high reflective luminance for incident light with a large incident angle, and has excellent retroreflective performance for incident light with a wide incident angle. A retroreflective material includes a support, a fixing resin layer held on the support, transparent microspheres embedded in the fixing resin layer, and a reflective layer provided between the transparent microspheres and the fixing resin layer. In the retroreflective material, the transparent microspheres used have a refractive index of 1.6 to 2.5, and are exposed in air with an exposure ratio of 53 to 70%. The retroreflective material can thus have excellent retroreflective performance for incident light with a wide incident angle.

Abstract: The purpose of the present invention is to provide a retroreflective tape having superior flexibility, retroreflective properties, and cleaning durability, as well as making possible clear formation of a boundary between a retroreflective region and a non-retroreflective region. Provided is a retroreflective tape in which a retroreflective region is provided on part of a base material layer, wherein: the retroreflective region is a region having a fixing resin layer, transparent microspheres embedded in the fixing resin layer, and a reflective layer provided between the transparent microspheres and the fixing resin layer and formed from a metal film; the index of refraction of the transparent microspheres is 1.6-2.5; and the transparent microspheres are embedded in the fixing resin layer such that the exposure ratio is 53-70%.

Abstract: A glass composition of the present disclosure includes, in wt %, 50?SiO2?54, 25?B2O3?30, 12?Al2O3?15, 0.5?MgO?1.9, 3.0?CaO?5.5, 0?ZnO?3.5, 0.1?Li2O?0.5, and 0.1?Na2O?0.3, and has a permittivity of less than 5.0 at a frequency of 1 MHz. The glass composition of the present disclosure has a low permittivity. The use of this glass composition can reduce the occurrence of devitrification and the inclusion of bubbles in glass fibers to be formed or in a shaped glass material to be formed even when the glass fibers have a small fiber diameter or the shaped glass material has a small thickness.

Abstract: The present invention provides a polyester film, wherein an arbitrary direction on the film surface is defined to have an angle of 0°, and three directions are defined to have angles of 45°, 90°, and 135°, respectively, clockwise from the 0° direction, and the difference between the maximum value and the minimum value of the stresses at 5% elongation in the four directions is 50 MPa or less, the difference between the maximum value and the minimum value of the stresses at 15% elongation in the four directions is 70 MPa or less, and the modulus of elasticity in any one of the four directions falls within a range from 2.0 to 3.5 GPa.

Abstract: A primary base fabric for a tufted carpet includes a first non-woven web and a second non-woven web laminated on each other. The first non-woven web is constituted with a first constituent fiber formed with a first thermoplastic resin and containing carbon. The second non-woven web is constituted with a second constituent fiber formed with a second thermoplastic resin and having a carbon content lower than the carbon content of the first constituent fiber or containing no carbon. The primary base fabric is a product prepared by combining the first non-woven web and the second non-woven web through an emboss processing.

Abstract: Provided is a polyamide resin composition including 0.01 to 50 parts by mass of cellulose fiber in relation to 100 parts by mass of a polyamide resin, having a relative viscosity of 2.3 or more, and having an L-value, an a-value and a b-value in an Lab color space of 20 or more, 10 or less and 20 or less, respectively. The aforementioned polyamide resin composition is obtained by subjecting a polyamide resin composition having a relative viscosity of 2.2 or less to a solid phase polymerization.

Abstract: An object of the present invention is to provide a bismaleimide (D-BMI) modified product in which an amino group of dimer diamine (DDA) is maleimidized, which has the good heat resistance, and has the sufficiently enhanced processability, and a method for producing the same. There are provided: <1> A bismaleimide (D-BMI) modified product in which an amino group of dimer diamine is maleimidized, the bismaleimide modified product having the following characteristics: 1) An acid value of the D-BMI modified product is 2 mg-KOH/g or less. 2) In 1H-NMR, when quantitative comparison is performed using an integrated value (A) of a peak corresponding to a proton of a methylene group directly bound to a nitrogen atom of a maleimide group and an integrated value (B) of a peak corresponding to a vinyl proton of a maleimide group, A/B is 1.25 or more and 2.00 or less.

Abstract: An object of the present invention is to provide a retroreflective material that has excellent wash resistance, and stably maintains, even after it is repeatedly washed, a daytime color visible by ink-jet printing and a nighttime color visible by retroreflected light. A retroreflective material comprising a fixing resin layer, a transparent microsphere embedded in the fixing resin layer, a reflective layer provided on a surface of the transparent microsphere opposite to incident light, and an ink-jet receptive layer provided on an outermost surface near the incident light, wherein the refractive index of the transparent microsphere is set to 1.6 to 2.

Abstract: The present invention provides a polyester film, wherein an arbitrary direction on the film surface is defined to have an angle of 0°, and three directions are defined to have angles of 45°, 90°, and 135°, respectively, clockwise from the 0° direction, and the difference between the maximum value and the minimum value of the stresses at 5% elongation in the four directions is 50 MPa or less, the difference between the maximum value and the minimum value of the stresses at 15% elongation i,n the four directions is 70 MPa or less, and the modulus of elasticity in any one of the four directions falls within a range from 2.0 to 3.5 GPa.

Abstract: An object of the present invention is to provide a retroreflective material that shows high chroma for incident light with a wide angle, and can change the color tone of reflected light depending on the incident angle of the incident light, and also has reduced unevenness in the color of the reflected light. An open-type retroreflective material in which a transparent resin layer and a reflective layer formed of a transparent metal compound thin film are laminated between a transparent microsphere and a fixing resin layer, and the layer thickness of the transparent resin layer is set to satisfy predetermined conditions, can show high chroma for incident light with a wide angle, and can change the color tone of reflected light depending on the incident angle of the incident light, and can also have reduced color unevenness.

Abstract: Disclosed is an aqueous polyolefin resin dispersion including a polyolefin resin and an aqueous medium, wherein the polyolefin resin includes an olefin component and an unsaturated carboxylic acid component as copolymer components; the olefin component includes propylene (A) and an olefin(s) (B) other than propylene; the mass ratio (A/B) between the propylene (A) and the olefin(s) (B) other than propylene is 60/40 to 95/5; the content of the unsaturated carboxylic acid component as the copolymer component is 1 part by mass or more in relation to 100 parts by mass of the total mass of (A) and (B); and the content of the unsaturated carboxylic acid monomer in the dry residue of the aqueous dispersion is 10,000 ppm or less.