Abstract: A bonding laminated film for bonding, and a light transmission laminate are provided. The bonding laminating film and the light transmission laminate comprise a first layer comprising a first surface and a second surface opposite to the first surface, and a second layer disposed inside the first layer and comprising a wedge part whose cross section is triangular or trapezoidal in a part or a whole of the second layer. The refractive index of the second layer is higher than the refractive index of the first layer. The bonding laminated film has an overall even thickness, and has anti-double-image elements in a desired area though a bonding laminated film, and has a substantially non-wedge shape.

Abstract: A film for glass lamination includes a pigment portion occupying some or a whole of the film, wherein the pigment portion includes a polyvinyl acetal resin, a pigment, a plasticizer, and a trioxane-based compound.

Abstract: The embodiments relate to a polyester film, to a process for preparing the same, and to a process for regenerating a polyethylene terephthalate (PET) container using the same. The polyester film has excellent seaming characteristics and recyclability by virtue of controlled crystallinity, whereby clumping rarely occurs even if it is thermally treated for a long period of time in the regeneration process.

Abstract: The optical multilayer film, which comprises a laminate in which a base layer, a primer layer, and a hard coat layer are sequentially laminated, has enhanced mechanical properties while preventing rainbow stains and a reduction in the visibility by adjusting the in-plane retardation of the base layer and the refractive indices of the respective layers. Thus, the optical component and the display device, which comprise the optical multilayer film, have excellent optical characteristics and can operate normally even in harsh environments.

Abstract: According to one embodiment, in producing polythiols in a manner similar to a conventional method, a polythiol having improved storage stability may be produced in a convenient manner by adjusting reaction conditions so as to prevent thiourea from remaining within products. In particular, the equivalent weight of thiourea to be used in a reaction may be adjusted to a predetermined range, thereby reducing the amount of unreacted thiourea, and thiourea may be removed once more in a sub sequent process, thereby effectively removing remaining thiourea while achieving a high yield. The polythiol thus produced does not contain residual thiourea, and thus does not show discoloration or cloudiness caused by precipitates even under prolonged storage or high-temperature conditions.

Abstract: A film for laminating includes an embossed surface, wherein a rad value of the embossed surface is 1 to 3 ?m, where the rad value is calculated by [Formula 1] below: rad ? ( um ) = 1 ? 0 ? 0 ? 0 Spc ? ( mm - 1 ) [ Formula ? 1 ] where, in [Formula 1], Spc is an arithmetic mean of curvatures of peak vertex on the embossed surface, which is evaluated by ISO_25178, wherein a number of peaks per 1 mm2 of the embossed surface (Spd value), which is evaluated by ISO_25178, is 200 or more and 1500 or less, and wherein a sum of maximum peak height and maximum valley depth of the embossed surface (Sz value) is 30 to 90 ?m.

Abstract: A film for glass bonding includes a thiourethane layer comprising a heterocyclo-alkanediyl-based repeat unit indicated by Formula 1, and a linear alkanediyl-based repeat unit indicated by Formula 2, and a base layer, disposed on a surface of the thiourethane layer, comprising a polyvinyl acetal resin and a plasticizer. In the Formula 1, R1 is —O— or —S—, and X is a heterocyclo-alkanediyl group having carbon atoms of 3 to 10 and sulfur atoms of 1 to 5, and in the Formula 2, R2 is —O— or —S—, and n2 is an integer of 4 to 10.

Abstract: An embodiment can provide a polyamide-imide film and a method for producing same, the film comprising a polyamide-imide polymer formed by polymerizing an aromatic diamine compound, an aromatic dianhydride compound and a dicarbonyl compound, wherein, in an XRD graph with a section in which 2?=8° to 32° as a baseline, the film shows a peak area of 50% or above around 2?=23° with respect to a peak area seen around 2?=15°.

Abstract: An embodiment can provide a method for producing a polyamide-imide film which is colorless and transparent and has excellent mechanical properties, the method comprising: a step of producing a polyamide-imide polymer solution by polymerizing an aromatic diamine compound, an aromatic dianhydride compound, and a dicarbonyl compound; a step of producing a gel sheet by extruding, casting and drying the polymer solution; and a step of producing a polyamide-imide film by heat-treating the gel sheet, wherein the viscosity of the polymer solution is 100,000 to 500,000 cps, and the polyamide-imide film has a yellowness index of 5 or lower, a haze of 2% or lower, a transmittance of 85% or above and a modulus of 5.0 GPa or above, at a thickness of 20 ?m to 75 ?m.

Abstract: A film for laminating including an embossed surface, wherein the embossed surface includes a plurality of convex parts and a plurality of concave parts disposed between the plurality of convex parts, wherein each of the plurality of convex parts is surrounded by the plurality of concave parts and does not include a convex part, wherein each of the plurality of convex parts has an average area of 4.0 mm2 or less, wherein an absolute value of Skewness (Ssk) of the embossed surface is more than 0, and 1 or less, and wherein Ar of the embossed surface is 1.001 to 2, where Ar is calculated by the following Formula 1: Ar = As Ac [ Formula ? 1 ] where, in the Formula 1, As is an average surface area of surface profiles of the plurality of convex parts comprised in a unit area (1 cm2) of the embossed surface and Ac is an average area occupied by the plurality of convex parts comprised in a unit area (1 cm2) of the embossed surface, is disclosed.

Abstract: Embodiments relate to a polyester-based film and a process for regenerating a polyester-based container using the same, which not only solve the environmental problems by enhancing the recyclability of polyester-based containers but also are capable of enhancing the quality, yield, and productivity. When the polyester-based film is cut into a size of 1 cm in width and 1 cm in length, immersed in an aqueous solution of sodium hydroxide (NaOH) having a concentration of 1% by weight, and stirred for 15 minutes at 85° C. at a speed of 240 m/minute, the average particle size of the component of the printing layer separated from the base layer satisfies 15 ?m or more. Thus, it is possible to enhance the quality of the regenerated polyester-based chips produced from the polyester-based container provided with the polyester-based film.

Abstract: Embodiments relate to an optical film and a liquid crystal display device comprising the same. More specifically, the embodiments relate to an optical film that is excellent in optical characteristics and has no polarization unevenness since it comprises a base layer that has a low in-plane retardation and a low thickness direction retardation and has an excellent adhesiveness by virtue of a proper level of surface tension, a process for preparing the same, and a liquid crystal display device comprising the same.

Abstract: Embodiments relate to a process for preparing a poly(amide-imide) film and a poly(amide-imide) film prepared thereby. The process is capable of preparing a poly(amide-imide) film that is excellent in optical properties and mechanical properties.

Abstract: Embodiment relates to film for bonding, and a light-transmitting laminate including the same and the like, a film for bonding comprising an embossed surface, wherein the embossed surface has an A2/A1 value of 1 or less are disclosed. A film for bonding have improved in deairing stability during formation of a light transmitting laminate, an edge sealing characteristic, and the like by controlling characteristics of a embossed surface.

Abstract: Embodiments provide a polyamide-imide polymer film, which comprises a polyamide-imide polymer formed by polymerizing a diamine compound, a dianhydride compound, and a dicarbonyl compound; and silica particles, wherein the number of aggregates having an average diameter of 150 to 200 nm observed in a cross-section cut in the thickness direction of the polyamide-imide film is less than 0.5/?m2, and a process for preparing the same.

Abstract: In the embodiments, an aqueous hydrochloric acid solution instead of hydrogen chloride gas and solid triphosgene instead of phosgene gas may be used in the process of preparing a diisocyanate from a diamine through a diamine hydrochloride. In addition, the embodiments provide processes for preparing a diisocyanate composition and an optical lens, which are excellent in yield and quality with mitigated environmental problems by controlling the size of the diamine hydrochloride composition, the b* value according to the CIE color coordinate of the diamine hydrochloride composition, or the content of water in the diamine hydrochloride composition within a specific range.

Abstract: The plastic intermediate film includes a sound insulating layer, wherein the sound insulating layer comprises a polyvinyl acetal resin, a plasticizer, and a refractive index regulator, wherein the refractive index regulator is particles with average diameter (D50) of 100 nm or less and has an absolute refractive index of 2.0 or more, wherein the refractive index regulator is comprised in an amount of more than 0 wt % and 1 wt % or less based on the entire sound insulating layer, and wherein the plasticizer is comprised in an amount of 33 to 41 wt % based on the entire sound insulating layer.

Abstract: The lamination film includes an increasing thickness area, wherein a thickness of the increasing thickness area increases from a first end to a second end, wherein the lamination film comprises at least one surface comprising a plurality of embossments, and wherein at least a portion of the at least one surface is disposed on a surface of the increasing thickness area.

Abstract: Disclosed herein are a polyamide-imide film which is transparent and exhibits superior mechanical properties such as surface hardness, etc. and a method of preparing the same. The polyamide-imide film a copolymer of an aromatic diamine, an aromatic dianhydride, and an aromatic dicarbonyl compound, wherein the aromatic diamine and the aromatic dianhydride forms an imide unit; the aromatic diamine and the aromatic dicarbonyl compound forms an amide unit; and the amide unit accounts for 50-70 mol % of 100 mol % of the units of the copolymer, thereby exhibiting transparency and superior mechanical properties including surface hardness.

Abstract: The present disclosure relates to a film for bonding including an embossed surface, wherein the embossed surface has a Sku value of 5 or less, wherein the embossed surface has Sk, Spk, and Svk values, and when a total sum of the Sk value, the Spk value, and the Svk value is 100%, a sum of the Sk value and the Spk value is 50% or more, wherein the embossed surface has a Sz value of 30 to 90 ?m, and wherein the film includes a polyvinyl acetal resin and a plasticizer.