Abstract: An inkjet printing method includes the steps of a) providing a white inkjet ink and at least one colour inkjet ink to an inkjet printer; and b) jetting the white inkjet ink at a higher temperature than the colour inkjet ink onto an ink-receiver. The difference in jetting temperature between the white inkjet ink and the colour inkjet ink is at least 5° C. Inkjet ink sets and inkjet printers are also disclosed.

Abstract: Disclosed is a photosensitive resin composition for a color filter protective layer including a cross-linkable alkali soluble resin including a repeating unit represented by the following Chemical Formula 1, a reactive unsaturated compound, a photopolymerization initiator, and a solvent. In Chemical Formulae 1 to 3, R1 to R6 and A1 to A3 are the same as in the detailed description.

Abstract: The present invention relates to the use of polymeric photoinitiators based on polyalkyletherurethane backbones in the production of hydrophilic gels, in particular hydrogels. The invention relates to methods for manufacturing hydrophilic gels using said polymeric photoinitiators, and the hydrophilic gels thus obtained.

Abstract: The present invention relates to a phenoxy resin for an optical material obtained by subjecting at least one selected from specific difunctional epoxy resins and at least one selected from specific difunctional phenols to polyaddition reaction, wherein a film comprising the above phenoxy resin has a refractive index of 1.580 or less at 25° C. and a wavelength of 830 nm, a resin composition for an optical material containing the above phenoxy resin, a resin film for an optical material comprising the above resin composition and an optical waveguide produced by using the above resin composition and/or the above resin film.

Abstract: The present invention provides a curable composition comprising: (a) a resin composition being liquid at 23° C. and comprising monomers or oligomers or a mixture of monomers and oligomers polymerizable by a ring-opening reaction; (b) an impact modifier containing one or more block copolymers having at least one block composed of methyl methacrylate and (c) one or more polymerization initiators. The curable resin composition can be used for curable coatings per se and in specific for stereolithography and other applications such as three dimensional printing applications where a 3D object is formed.

Abstract: The present invention provides novel hybrid polymer useful for alignment layers for inducing alignment of a liquid crystal medium. Hybrid polymers of this invention are prepared from a) at least one component selected from the group consisting of oligomer(s) and polymer(s) within the class of polyimides, poly(amic acids) and esters thereof wherein the at least one component comprises at least one initiator generating moiety, and b) at least one component selected from the group consisting of addition monomer(s) and addition polymer(s), wherein the two components are covalently bonded to form a copolymer. The invention further describes liquid crystal elements such as all liquid crystal display products or modes, liquid crystal devices and liquid crystal optical films comprising the novel hybrid polymer alignment layers.

Abstract: An ultraviolet curable inkjet recording ink of the present invention includes at least a colorant, a light-curable compound, a photopolymerization initiator, and at least one fluorine surfactant represented by the following formulae (1) or (2) as a surface tension regulator: where Rf is selected from CH2CF3 and CH2CF2CF3; n represents a value of 5 to 20; and each R1 represents a functional group capable of initiating an ultraviolet curing reaction and one of the two R1s in (1) may be hydrogen; where Rf is selected from CH2CF3 and CH2CF2CF3; l represents a value of 1 to 20; k and m each represent a value of 1 to 8; each R2 represents a functional group capable of initiating an ultraviolet curing reaction and one of the two R2s in (2) may be hydrogen; and R3 is selected from hydrogen and methyl.

Abstract: The present invention provides a photocurable ink composition for ink jet recording with excellent curability. The photocurable ink composition for ink jet recording includes polymerizable compounds, a photopolymerization initiator, and a colorant, wherein the polymerizable compounds include a vinyl ether group-containing (meth)acrylate represented by general formula (I): CH2?CR1—COOR2—O—CH?CH—R3??(I) (wherein R1 is a hydrogen atom or a methyl group, R2 is a divalent organic residue having 2 to 20 carbon atoms, and R3 is a hydrogen atom or a monovalent organic residue having 1 to 11 carbon atoms) and phenoxyethyl (meth)acrylate.

Abstract: The present invention relates to an acrylic pressure-sensitive adhesive composition which comprises a (meth)acrylic copolymer comprising an alkyl(meth)acrylic acid ester monomer, in which alkyl has 2 to 14 carbon atoms, and a (meth)acrylic acid ester monomer containing a copolymerizable photo-initiator group, wherein it has a gel fraction of 10 to 55% and a swelling ratio of 30 to 110, and a sol (uncross-linked polymer) eluted in final pressure-sensitive adhesive with a solvent (ethyl acetate) has a weight average molecular weight of 600,000 or more; and a polarizing plate and a liquid crystal display device, comprising the same. The polarizing plate according to the present invention has an excellent adhesion durability under a high temperature or a high temperature and humidity condition, has an excellent low light leakage property by effectively providing stress release property, and may greatly improve productivity for polarizing plates, by using photo-curing.

Abstract: The present invention relates to an aqueous alkali-developable photosensitive polyimide precursor resin composition that is appropriate for highly heat-resistant transparent protection layers and insulation layers for liquid crystal display devices.

Abstract: The invention relates to an initiator system comprising a diarylalkylamine compound and a sensitizing agent. The invention also relates to a hardenable composition comprising the initiator system. The invention further relates to the use of the initiator system for initiating the hardening process of a hardenable composition being selected from cationically curing composition(s) and/or radically curing composition(s) or a mixture thereof. The initiator system and the hardening composition can be used in various fields, including the dental and orthodontic area.

Abstract: A highly heat-conductive epoxy resin composition, which comprises epoxy resin in a liquid state at room temperature, a latent curing agent, a highly heat-conductive filler, and a non-ionic surfactant, where preferably the latent curing agent is mixed with a portion of the epoxy resin in a liquid state at room temperature to form a master batch, can keep a relatively low viscosity, even if a large amount of the filler is contained, and can be cured at a relatively low temperature for a short time, and has a distinguished storage stability as one-component composition.

Abstract: The present invention provides an ink composition having excellent ink ejection stability and stretching property, curable with a high sensitivity by irradiation of radiation rays, and capable of forming an image excellent in rubfastness and blocking resistance, an inkjet recording method using the ink composition, and a printed article. The ink composition includes (a) a polymer having a siloxane structure and a polymerizable group on a side chain thereof, (b) a polymerizable compound, and (c) a photopolymerization initiator, and the inkjet recording method includes a step of ejecting the ink composition onto a recording medium to be recorded with an inkjet recording apparatus and a step of curing the ink composition by irradiating active radiation rays on the ejected ink composition.

Abstract: An object of the present invention is to provide a novel cationic photopolymerization initiator that efficiently absorbs light and generates protons. As a means of achieving the object above, a preferred cationic photopolymerization initiator of the present invention includes an initiator comprising a bismuthonium salt represented by the following general formula (II): Wherein R11, R12, and R13 may be the same or different and are each an optionally substituted monocyclic aryl group or an optionally substituted monocyclic heteroaryl group, R14 is an optionally substituted fused polycyclic aromatic group or an optionally substituted fused polycyclic heterocyclic group, and X? is an anion associated with a cation.

Abstract: Provided is a resin composition for stereolithography that absorbs little water and moisture over time in uncured state, maintains a low moisture absorption rate even under high humidity, and has high curing sensitivity, from which a stereolithography product excellent in the properties, such as dimensional accuracy, mechanical properties, and dimensional stability can be smoothly produced for reduced light irradiation time. The resin composition for stereolithography comprising an oxetane compound expressed by the general formula (I) below: wherein R1 denotes an alkyl group having 1 to 5 carbon atoms, and R2 denotes an alkylene group having 2 to 10 carbon atoms that may contain an ether bond, in the proportion of from 3 to 60 mass % based on the total mass of the resin composition for stereolithography.

Abstract: Disclosed is a photocurable resin composition for additive fabrication comprising a polymerizable component that is polymerizable by free-radical polymerization, cat ionic polymerization, or both free-radical polymerization and cationic polymerization, and a photoinitiating system capable of initiating the free-radical polymerization, cationic polymerization, or both free-radical polymerization and cationic polymerization. The photocurable resin composition is a liquid at about 25° C., and is capable of curing to provide a solid upon irradiation with light emitted from a light emitting diode (LED), wherein the light has a wavelength of from about 100 nm to about 900 nm. Also disclosed is a three-dimensional article prepared from the photocurable resin composition for additive fabrication, and a process for preparing three-dimensional articles by additive fabrication.

Abstract: The invention features a dental composition containing a polycyclic aromatic compound, such as 2-ethyl 9,10-dimethoxy anthracene (EDMOA), in an amount that provides the composition with fluorescence mimicking that of natural teeth.

Abstract: The invention concerns dental compositions. Said composition comprises (1) a silicone crosslinkable and/or polymerizable by cationic process; (2) an efficient amount of at least an initiator such as an organometallic complex borate; and (3) a dental filler present in the composition in a proportion of at least 10 wt. % relative to the composition total weight. Said dental compositions are useful for making dental prostheses or for dental restoration.

Abstract: A functionally graded shape memory polymer (SMP) that has a range of transition temperatures that are spatially distributed in a gradient fashion within one single article. The SMP is formed by post-curing a pre-cured glassy SMP in a linear temperature gradient that imposes different vitrification temperature limits at different positions along the gradient. Utilizing indentation-based surface shape memory coupled with optical measurements of photoelastic response, the capability of this material to respond over a wide range of thermal triggers is correlated with the graded glass transition behavior. This new class of SMP offers great potential for such applications as passive temperature sensing and precise control of shape evolution during a thermally triggered shape recovery.

Abstract: A photocationically polymerizable adhesive composition and an optical member, the photocationically polymerizable adhesive composition including about 75 to about 99.8 parts by weight of a compound including one of aliphatic epoxy, alicyclic epoxy, oxetane, and vinyl ether compounds, about 0.1 to about 5 parts by weight of a titanate coupling agent, and about 0.1 to about 20 parts by weight of a photopolymerization initiator, wherein a sum of weights of the compound, the titanate coupling agent, and the photopolymerization initiator is 100 parts by weight.

Abstract: The present invention relates to a curable resin composition comprising a cyclic aliphatic multifunctional epoxy resin, a cyclic aliphatic difunctional epoxy resin having formula B in the specification, and, optionally, a photoinitiator, a process for manufacturing an ink jet printhead comprising a polymeric material layer defining ink passage ways formed by curing said curable resin composition, and ink-jet print head comprising a polymeric material layer defining ink passage ways formed by curing said curable resin composition.

Abstract: A curable phase change ink composition that includes an ink vehicle including at least one isosorbide monomer having at least one functional group. Also described is an ink printing device that includes a curable phase change ink composition for printing onto a substrate, an ink jetting device, and a curing device providing radiation that cures the curable phase change ink composition. The curable phase change ink composition of the ink printing device includes an ink vehicle including at least one isosorbide monomer having at least one functional group.

Abstract: The invention provides an ink composition including (i) a sensitizing dye having a polymerizable group as a substituent, (ii) a polymerization initiator and (iii) a polymerizable compound having an ethylenically unsaturated bond. The invention also provides an inkjet recording method and a polymerizable compound useful as a sensitizing dye. The sensitizing dye (i) is represented by Formula (I) or (II) below. In the formulae, X represents O, S, NRa, or NRb, n1 and n2 each represent 0 or 1, Ra, Rb, and R1 to R18 each represent a hydrogen atom or a monovalent substituent, and one polymerizable group is present in the molecule.

Abstract: Provided is a method for efficiently producing a cationically curable condensed silicon compound. There was an unsolved problem that, in a condensation reaction, an oxetanyl group is subjected to ring-opening under an acidic condition, while gelation is easily caused under an alkaline condition. It was found that a silicon compound (C) having an oxetanyl group can be obtained without causing gelation even at a high concentration by the present method including a first step of separately subjecting a silicon compound (A) having four siloxane bond-forming groups and a silicon compound (B) having an oxetanyl group to alcohol exchange reaction with 1-propanol and a second step of subjecting silicon compounds (AP) and (BP) undergone the first step to hydrolytic copolycondensation under an alkaline condition at a specific ratio.

Abstract: The invention provides methods for inducing reversible chain cleavage of polymer chains in a crosslinked polymeric material. Reversible cleavage of the polymer backbone is capable of relieving stress in the polymeric material as the bonds reform in a less stressed state. The invention also provides methods for making polymeric materials capable of reversible chain cleavage, materials made by the methods of the invention, and linear monomers containing reversible chain cleavage groups which are useful in the materials and methods of the invention.

Abstract: An optical moulding process is disclosed comprising the sequential steps of: (a)(y) forming a layer of a photocurable composition; and (bXz) irradiating selected areas of the composition in the layer with radiation from a radiation source, thereby curing the composition in said selected areas and repeating the steps a) and b) on top of an earlier cured layer to form a three dimensional structure, wherein the radiation source used in step b) is a non-coherent source of radiation and wherein the photocurable composition comprises at least two curable components: (i) 45%-95% (and preferably at least 50%, more preferably at least 60%, e.g.

Abstract: Provided is an acrylate having a high refractive index, which is represented by Chemical Formula (1) or (2), and a method for preparing the same. Since the acrylate has a refractive index, it may be widely applicable to components of display devices such as prism sheet and may be prepared simply, effectively and economically.

Abstract: The present invention relates to a pattern forming ink composition, and more particularly, to a pattern forming ink composition having high yellowing resistance, wherein the pattern forming ink composition including an acrylate-based resin having a ring structure (A), a compound having at least one ethylenically unsaturated double bond (B) and a photoinitiator (C). The pattern forming ink is printed as a reflection pattern on a light guide plate to scatter and reflect the light incident to the reflection pattern towards a light emitting surface of the light guide plate.

Abstract: The present invention relates to a water soluble photosensitive polyimide polymer, preparation thereof and a photoresist composition containing the same. The water soluble photosensitive polyimide polymer is characterized by having repeat units represented by the following formula (I): the other symbols are defined in the specification].

Abstract: An ink composition containing at least a polymerizable composition, a pigment, and a polymer represented by General Formula (1): where R1 represents an (m+n)-valent organic linking group, R2 represents a single bond or divalent organic linking group; A1 represents a monovalent organic group having a pigment adsorption structure that contains at least one selected from organic pigment structure, heterocyclic structure, acidic group, group having a basic nitrogen atom, urea group, urethane group, group having a coordinating oxygen atom, hydrocarbon group having 4 or more carbon atoms, alkoxysilyl group, epoxy group, isocyanate group, and hydroxyl group; the n groups A1 and bonds or groups R2 may independently be the same or different; “m” is 1 to 8, “n” is 2 to 9, and m+n is 3 to 10; P1 represents a polymer skeleton; and the m skeletons P1 may be the same or different.

Abstract: Curable, phase-change compositions and inks used for printing three-dimensional objects including a curable monomer, a photoinitiator, a wax and a gellant, where the composition of the cured formulation has a room temperature modulus of from about 0.01 to about 5 Gpa. The curable monomer includes acrylic monomer, polybutadiene adducted with maleic anhydride, aliphatic urethane acrylate, polyester acrylate, 3-acryloxypropyltrimethoxysilane, or acryloxypropyl t-structured siloxane.

Abstract: An optical element comprising: a first monomer polymerized while in the presence of a second monomer to form a first polymer intermixed with the second monomer, the first polymer having a spatially varying degree of cure that provides a predetermined refractive index profile; and the second monomer polymerized in the presence of the first polymer to form a second polymer intermixed with the first polymer, the second polymer stabilizing the refractive index profile.

Abstract: A curable composition for nanoimprints which comprises a polycyclic aromatic structure-having polymerizable monomer and a photopolymerization initiator is excellent in mold releasability, etching resistance and solvent resistance and capable of forming patterns.

Abstract: Hydrophobic coating compositions are provided as are processes to coat articles with the compositions. Extremely hydrophobic coatings are provided by the compositions. Durable, weatherable and scratch-resistant coatings are provided by compositions comprising a trifluoromethyl-containing component and a hardenable material. Weatherable coatings are also provided by compositions comprising a mobile non-volatile fluorinated component and a hardenable material. Processes are also provided for forming hydrophobic coatings on articles.

Abstract: A novel dioxetane compound is provided having a cationically polymerizable oxetane group, which compound is excellent in compatibility with a liquid crystalline compound and a non-liquid crystalline compound. An optical film is also provided with excellent liquid crystal orientation retention properties and mechanical strength, produced by aligning a composition of the dioxetane compound and a cationically polymerizable compound in a liquid crystal orientation and fixing the liquid crystal orientation by polymerization. Further, a liquid crystal display device is provided with the optical film.

Abstract: A flame retardant suitable for manufacturing a polymer composition is provided. The polymer composition is used for forming a cured film in which a balance among flame retardancy, adhesion, chemical resistance, heat resistance, and elasticity, and so on, is provided. A flame-retardant polymer composition with an excellent balance among the above properties is also provided. The flame retardant of the invention has a structure of Formula (1), (2), or (3): (in which, R1 is hydrogen or methyl, R2 is C2-20 alkylene or C2-20 alkylene in which any —CH2— is replaced by —O—, R3 and R4 are C1-20 alkyl, phenyl, and phenyl substituted by C1-5 alkyl or phenyl, R3 and R4 may also be an integrally-formed cyclic group, and p and q are 0 or 1).

Abstract: A photocationically polymerizable adhesive composition and an optical member, the photocationically polymerizable adhesive composition including about 75 to about 99.8 parts by weight of a compound including one of aliphatic epoxy, alicyclic epoxy, oxetane, and vinyl ether compounds, about 0.1 to about 5 parts by weight of a titanate coupling agent, and about 0.1 to about 20 parts by weight of a photopolymerization initiator, wherein a sum of weights of the compound, the titanate coupling agent, and the photopolymerization initiator is 100 parts by weight.

Abstract: The invention provides a photo-curable composition that addresses degradation in dispersibility caused by the use of a pigment, and has good color tone and high light fastness. The photo-curable composition includes: a polymerizable compound; a polymerization initiator; and a dye represented by Formula (1): in which, A1, A2 and A3 each represent a monovalent group, and Z represents a nitrogen atom, an oxygen atom, a sulfur atom, or a monovalent group-bonded carbon atom, the dye represented by Formula (1) having two azo groups in a molecule thereof.

Abstract: The present invention relates to a novel water soluble polyimide resin, which contains a hydrophilic functional group such as —OH, —COOH to increase the solubility of the polyimide resin in alkali aqueous solution, and is suitable for using as an insulation film in electronic and photoelectric products. The present invention also relates to preparation and use of the above polyimide.

Abstract: An ultraviolet curable resin composition, which comprises a cationic photopolymerization initiator (B) and a urethane prepolymer (A) having a structure represented by the general formula (1); (wherein R1 and R2 each independently represent an alkylene group, R3, R4 and R5 each independently represent an alkyl group or hydrogen atom, R6 and R7 each independently represent an alkylene group having 2 to 4 carbon atoms, a represents 0 or 1, and b and c each independently represent an integer of 0 to 10).

Abstract: Radiation curable ink compositions for impulse printheads are described. The compositions include a photoinitiator system, containing both a photocation polymerization initiator and a free-radical photoinitiator, an acrylate ester of a carboxylic acid ester, and at least one radiation curable material.

Abstract: An object of the present invention is to provide a silsesquioxane compound that is capable of producing a coating film with excellent heat resistance and scratch resistance, and that has excellent compatibility with general polymerizable unsaturated compounds as well as polymerizable unsaturated compounds with high polarity. The present invention provides a silsesquioxane compound comprising organic groups each directly bonded to a silicon atom of the compound, at least one of the organic groups being an organic group having one or more secondary hydroxyl groups and one (meth)acryloyloxy group.

Abstract: A radiation curable solid ink composition comprising at least one curable wax that is curable by free radical polymerization; at least one monomer, oligomer, or prepolymer; at least one non-curable wax; at least one free-radical photoinitiator or photoinitiating moiety; and a colorant; wherein the components form a curable ink composition that is a solid at a first temperature of from about 20 to about 25° C.; and wherein the components form a liquid composition at a second temperature of greater than about 40° C.

Abstract: An epoxy resin composition, including: an epoxy resin (A) represented by Formula (1); an epoxy resin (B) having an epoxy equivalent of 220 or less and having twice or more epoxy groups in a molecule than epoxy groups of the epoxy resin (A); and a photocationic polymerization initiator (C), in which: the epoxy resins (A) and (B) constitute main components; and a weight of the epoxy resin (A) is 40% or more and a weight of the epoxy resin (B) is 30% or more with respect to a total weight of the epoxy resins (A) and (B): where: R represents a hydrogen atom, a methyl group, an ethyl group, a propyl group, or a t-butyl group; n represents an integer of 0 or more and 4 or less; and m represents an integer of 1 or more and 3 or less.

Abstract: The present invention relates to a radiation curable and developable polyurethane which is characterized by having a carboxy group in its main chain and a acryloyl group in its side chain and comprising the following repeat units (I), (II), and (II) in a random arrangement: wherein R1, R2, R3, R4, and T are defined in the specification. The polyurethane has a weight molecular weight measured by GPC in a range of from 3,000 to 400,000; an acid value in a range of from 5 to 120 mgKOH/g. The present invention also relates to a radiation curable and developable composition containing the polyurethane.

Abstract: This invention relates to a durable layer for in-mold decoration. The durable layer is formed from a composition comprising (i) a thermally crosslinkable and photochemically or radically graftable polymer, (ii) a non-ethylenical thermal crosslinker, and (iii) a radiation curable multifunctional monomer or oligomer. The durable layer of the present invention has excellent surface quality with a wider geometric tolerance and can be formed at low cost.

Abstract: The present invention relates to a process for producing a pressure-sensitive adhesive layer, which includes irradiating a photopolymerizable acrylic pressure-sensitive adhesive composition layer provided between two films with an active energy beam to polymerize the photopolymerizable acrylic pressure-sensitive adhesive composition layer, in which the polymerization is performed while a layer of a composition for preventing polymerization inhibition which is curable with an active energy beam in the atmosphere is provided on a side surface of the photopolymerizable acrylic pressure-sensitive adhesive composition layer. According to the process for producing a pressure-sensitive adhesive layer of the present invention, owing to the construction as discussed above, it is possible to reuse a film.

Abstract: A sealing agent for a photoelectric conversion device which comprises one or more of a compound having a glycidyl structure, a compound having a cyclohexene oxide structure, a compound having an oxetane structure and a compound having a vinyl ether structure, and a cationic polymerization initiator; a photoelectric conversion device using the sealing agent; and a solar cell comprising the photoelectric conversion device. The sealing agent for a photoelectric conversion device can be used for pasting together upper and lower electroconductive glass substrates at an ordinary temperature in the manufacture of a photoelectric conversion device, and is excellent with respect to adhesion strength and the reliability in moisture resistance.

Abstract: A photosensitive resin composition which is excellent in flame resistance, resolution and flexibility, and substantially free from deposition of components thereof to prevent contamination of a product. The photosensitive resin composition comprises: (A) a cyclic phosphazene compound represented by the following general formula (1): wherein at least one of the Rs is an organic group having the urethane(meth)acrylate structure represented by the following general formula (2) and n is a positive number of 2 to 5: wherein R1 is a hydrogen atom or a methyl group; (B) a carboxyl-containing linear polymer obtained by polymerizing an ethylenically unsaturated compound through addition polymerization; (C) an epoxy resin; (D) an ethylenically unsaturated group-containing polymerizable compound; and (E) a photopolymerization initiator; wherein the cyclic phosphazene compound (A) is present in a proportion of 5 to 30 wt % based on the total weight of the composition.

Abstract: A photocurable resin composition suitable for photo-fabrication. The resin composition capable of being promptly cured by photo-irradiation, thereby reducing fabricating time and providing cured products having excellent mechanical strength and minimized shrinkage during curing to ensure high dimensional accuracy. The composition includes (A) an oxetane compound, (B) an epoxy compound, and (C) a cationic photo-initiator.