A photo-curable resin composition for three-dimensional shaping including: a resin component (A) containing a (meth)acrylate compound (A1) represented by General Formula (1)

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(where R.sub.1 is a hydrogen atom or a methyl group, and R.sub.2 is a linear, branched, or cyclic trivalent hydrocarbon group with one to eight carbon atoms which may have three or less heteroatoms), and a urethane (meth)acrylate compound (A2) having two or more radical-polymerizable functional groups; inorganic particles (B); and a photoradical polymerization initiator (C). 40% by mass or more and 90% by mass or less of the (meth)acrylate compound (A1) is contained in the resin component (A). 10% by mass or more and 60% by mass or less of the urethane (meth)acrylate compound (A2) is contained in the resin component (A).

Provided are a coloring composition including a colorant, a first resin including a repeating unit represented by Formula (b-10), and a second resin different from the first resin, in which the second resin is at least one selected from a polyimide precursor, a polyimide resin, a polybenzoxazole precursor, a polybenzoxazole resin, or a polysiloxane resin; a film formed of the coloring composition; an optical filter; a solid-state imaging element; and an image display device. In Formula (b-10), Ar.sup.10 represents a group including an aromatic carboxyl group, L.sup.11 represents —COO— or —CONH—, L.sup.12 represents a trivalent linking group, and P.sup.10 represents a polymer chain.

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An optical fiber includes a glass fiber including: a core and a cladding; and a coating resin layer coating the glass fiber in contact with the glass fiber; wherein the coating resin layer has a primary resin layer coating the glass fiber in contact with the glass fiber and a secondary resin layer coating the primary resin layer, the primary resin layer contains a cured product of a first resin composition containing a photopolymerizable compound and a phosphine oxide-based photopolymerization initiator, the secondary resin layer contains a cured product of a second resin composition containing a photopolymerizable compound and a phosphine oxide-based photopolymerization initiator, and an amount of the phosphine oxide-based photopolymerization initiator remaining unreacted in the coating resin layer is 0.5 mass % or less.

A quantum dot composite material, and an optical film and a backlight module using the same are provided. The quantum dot composite material includes a curable polymer and a plurality of quantum dots dispersed in the curable polymer. Based on the total weight of the curable polymer being 100%, the curable polymer includes 15 wt % to 40 wt % of monofunctional group acrylic monomer, 15 wt % to 40 wt % of multifunctional group acrylic monomer, 5 wt % to 35 wt % of mercaptan functional group monomer, 1 wt % to 5 wt % of photoinitiator, 10 wt % to 30 wt % of acrylic oligomer, and 5 wt % to 25 wt % of scattering particles.

A quantum dot composite material, and an optical film and a backlight module using the same are provided. The quantum dot composite material includes a curable polymer and a plurality of quantum dots dispersed in the curable polymer. Based on the total weight of the curable polymer being 100%, the curable polymer includes 15 wt % to 40 wt % of monofunctional group acrylic monomer, 15 wt % to 40 wt % of multifunctional group acrylic monomer, 5 wt % to 35 wt % of mercaptan functional group monomer, 1 wt % to 5 wt % of photoinitiator, 10 wt % to 30 wt % of acrylic oligomer, and 5 wt % to 25 wt % of scattering particles.

Embodiments in accordance with the present invention encompass compositions comprising a long shelf stabilized organopalladium compound of formula (I) as described herein. The composition further contains a photoacid generator, a photosensitizer and one or more olefinic monomers as described herein. The shelf life of the compositions can further be extended by employing a stabilizer, such as for example, a hindered amine. The composition undergoes vinyl addition polymerization when it is exposed to a suitable actinic radiation to form a substantially transparent film or a three dimensional object. More specifically, the compositions of this invention are stable at room temperature for several days to several months and can also be stored at higher temperatures from about 40° C. to 60° C. for several days and undergo mass polymerization only when subjected to suitable actinic radiation. The monomers employed therein have a range of optical and mechanical properties, and thus these compositions can be tailored to form films and/or three dimensional objects having various opto-electronic properties. Accordingly, compositions of this invention are useful in various applications, including as coatings, encapsulants, fillers, leveling agents, sealants, adhesives, among others.

Provided herein are high-temperature shape memory photopolymers (HTSMP) and methods of making. The HTSMP has flame retardance and recovery stress of greater than 30 MPa. The HTSMP is formed from a polyacrylate and about 5 wt % to 15 wt % of a phosphorus containing photo-initiator (TPO), wherein the polyacrylate is polymerized by UV exposure of an acrylate monomer and the TPO.

A photocurable composition for three-dimensional stereolithography which has a lower viscosity and from which a cured product having a high refractive index is obtained, and a three-dimensional object formed by using the composition. The composition is a photocurable composition for three-dimensional stereolithography containing a fluorene monomer, a carbazole monomer, a diluent monomer, and a photopolymerization initiator, the carbazole monomer being contained in an amount of less than 30 wt % with respect to the total amount of the fluorene monomer and the carbazole monomer, and the diluent monomer being contained in an amount of at least 20 wt % with respect to total solids.

A polymer composition is disclosed that comprises a polymer matrix containing at least one thermotropic liquid crystalline polymer and at least one hollow inorganic filler having a dielectric constant of about 3.0 or less at a frequency of 100 MHz wherein the weight ratio of the at least one thermotropic liquid crystalline polymer to the at least one hollow inorganic filler is from about 0.1 to about 10 and wherein the polymer composition exhibits a dielectric constant of about 4 or less and a dissipation factor of about 0.02 or less, as determined at a frequency of 10 GHz.

The present invention relates to multifunctional bisacylphosphine oxides, which are useful as photoinitiators, and to compositions comprising said photoinitiators. The invention also relates to a process for photocuring and to articles of manufacture prepared by said process.