Embodiments in accordance with the present invention encompass compositions encompassing a latent organo-ruthenium catalyst, an organo-ruthenium compound and a pyridine compound along with one or more monomers which undergo ring open metathesis polymerization (ROMP) when said composition is heated to a temperature from 80° C. to 150° C. or higher to form a substantially transparent film. Alternatively the compositions of this invention also undergo polymerization when subjected to suitable radiation. The monomers employed therein have a range of refractive index from 1.4 to 1.6 and thus these compositions can be tailored to form transparent films of varied refractive indices. The compositions of this invention further comprises inorganic nanoparticles which form transparent films and further increases the refractive indices of the compositions. Accordingly, compositions of this invention are useful in various opto-electronic applications, including as coatings, encapsulants, fillers, leveling agents, among others.

Provided are a composition for forming a polyimide film for a cover window which may satisfy performance required for an advanced cover window, a method for preparing the same, and a use thereof. According to an implementation, a polyimide film for a cover window, which has excellent visibility without optical stain while colorless and transparent optical properties were not deteriorated and has excellent heat resistance and mechanical properties, and thus, is for use in optical applications, may be provided. In addition, a polyimide film for a cover window according to an implementation may be useful in various display devices.

Provided are a lens for spectacles containing a resin and a coloring agent having a maximum absorption wavelength in a methanol solution in a range of 400 nm to 500 nm and a half-width of an absorption peak in a methanol solution of 10 nm or more and less than 40 nm, and spectacles.

The present invention relates to polyolefin. More specifically, the present invention relates to polyolefin having excellent dart drop impact strength, and exhibiting improved transparency, and such polyolefin has a density of 0.915 g/cm3 to 0.930 g/cm3 measured according to ASTM D1505; and satisfies the following requirements (provided that S1+S2+S3=1), when measuring the relative content of peak area according to melting temperature (Tm) using SSA (Successive Self-nucleation and Annealing) analysis: the content(S1) of peak area at Tm less than 100° C. is 0.33 to 0.35; the content(S2) of peak area at Tm of 100° C. or more and 120° C. or less is 0.52 to 0.56; and the content(S3) of peak area at Tm greater than 120° C. is 0.10 to 0.14.

Acid-functionalized copolymers of methyl methacrylate having relatively high glass transition temperatures and molecular weights may be employed to manufacture articles having high light transmission values, low haze, high heat resistance, and high environmental stability, which are useful as optical protection films, zero-zero optical retardation films, and compensation films as well as lighting pipes and optical imaging lenses.

Provided is a resin composition capable of providing a plate-shaped molded article having a high refractive index as well as a high hardness, and a plate-shaped molded article, a multilayered article, and an anti-reflection film formed from the resin composition. The resin composition contains 10 to 99 parts by mass of an acrylic resin (A); and 90 to 1 part by mass of a random copolymer (B) derived from a monomer composition B composed of 5 to 95 mass % of a (meth)acrylate represented by the formula (b1) (b-1), 5 to 95 mass % of an aromatic (meth)acrylate (b-2), and 0 to 20 mass % of an additional monomer (b-3); in the formula (b1), Rb.sup.1 is a hydrogen atom or a methyl group, and Rb.sup.2 is an aliphatic group.

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A resin sheet of the present invention is a checker glass-like resin sheet made of a transparent thermoplastic resin, and includes a plurality of sectional arch-shaped elongated protrusions extending in one direction are regularly arranged in rows on, one surface of the resin sheet; and a plurality of sectional arch-shaped elongated protrusions extending in a direction perpendicular to the protrusions arranged on the one surface are regularly arranged in rows, on another surface of the resin sheet, in which an arithmetic average waviness (Wa) at a vertex of the protrusion in a direction in which the protrusion extends is 20 μm or less on both surfaces of the resin sheet. Accordingly, there is provided a resin sheet that can be used as an alternative to checker glass and has a certain degree of visibility from a short distance while having a shielding property from a long distance.

Color-stable rheology controlled polyolefin compositions and methods of making are described. A color-stable rheology controlled polyolefin composition can include a controlled rheology grade thermoplastic polyolefin, and an effective amount of a trisamide-based compound that imparts color-stability to the composition. The color-stable solid-state thermoplastic polyolefin composition can have a Hunter b value color change (Δb) rate of ≤0.03/day when stored at 93° C. for 50 days.

Provided is a cured product of a resin composition including a (meth)acrylate compound and a compound having at least one thiol group, wherein the content of the compound having at least one thiol group in the cured product is 30 mass % or less, and wherein the cured product has a secondary dispersion characteristic of 0.65 or more.

The present invention discloses a polylactic acid composite and use thereof. The polylactic acid composite includes the following components: (A) 89 to 98 parts by weight of polylactic acid; (B) 1 to 4 parts by weight of talcum powder; and (C) 1 to 7 parts by weight of a plasticizer. In the component (A), the polylactic acid has a polydispersity index P satisfying the following relationship: 1.55≤P≤2.02. In the component (B), the talcum powder has a particle size D.sub.(50) satisfying: 1 μm≤D.sub.(50)≤2.6 μm. In the component (C), the plasticizer has a relative molecular weight M satisfying: 180≤M≤670. Through research, the present invention has unexpectedly discovered that by using the polylactic acid having the polydispersity index P satisfying the relationship 1.55≤P≤2.02 as a matrix, adding a specific range of content of ultrafine talcum powder as a nucleating agent, and selecting the plasticizer of a specific molecular weight as a crystallization promotion agent, the prepared polylactic acid composite has a light transmittance T≥80%, a haze H≤40%, and a heat deflection temperature HDT≥90° C., having significantly improved heat resistance and transparency.