Abstract: The method for preparing a super absorbent polymer according to the present disclosure has a feature that it is possible to reduce the generation of a fine powder during production of the super absorbent polymer while maintaining excellent physical properties of the super absorbent polymer, including centrifuge retention capacity (CRC) and vortex removal time.

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: A material that is curable by radiation is applied over or included in colored material on non-printed machined characters formed on a plastic card. After applying the colored material and the radiation curable material to the machined characters, radiation is used to cure the radiation curable material. The colored material has improved durability due to the radiation cured material.

Abstract: This disclosure provides polymeric materials comprising weak crosslinking covalent bonds and/or weak crosslinking units comprising a weak covalent bond. Weak covalent bonds can be used in place of hydrogen bonds present in traditional polymeric materials (e.g., polyurethanes). Advantageously, the toughness can be controlled by varying the strength of weak covalent bonds and/or by varying the number of weak covalent crosslinks. Crosslinked materials applying the weak covalent crosslinking bonds can be used to create tough materials able to resist stress relaxation. Further, the present disclosure provides polymer chains and polymeric materials comprising inchain loops (also referred to herein as rings). The inchain loops comprise weak bonds and/or weak bridges comprising at least one weak bond.

Abstract: A polarizable compact is provided with high productivity, which makes a polarizing sheet resistant to the occurrence of color unevenness and voids and also resistant to the occurrence of variations in polarization degree accompanying thermal shrinkage and the like of a protective layer (protective film). A polarizable compact is used for glasses, and a method of manufacturing the same. An injection-molded portion made of a transparent plastic material is thermally bonded to the concave surface side of a polarizing sheet having a predetermined curvature radius. The polarizing sheet has a polarizer layer held between first and second protective layers respectively serving as a convex surface side and a concave surface side. Both the first and second protective layers are formed from transparent films by a casting method with retardation (Re)?50 nm. The transparent films for the first and second protective layers are respectively formed from an acylcellulose-based film and a polyamide-based film.

Abstract: An adhesive-coated polymer substrate comprising (a) a polymer substrate containing or consisting of a thermoplastic polymer with a Vicat A50 softening point according to DIN EN ISO 306 of up to 220° C., and (b) an adhesive composition coated directly on at least one side of the polymer substrate, wherein the adhesive composition (b) is a UV-curable or UV-cured hot melt pressure sensitive adhesive (PSA) is disclosed. A process for the manufacture of the adhesive-coated polymer substrate as well as to the use thereof are also disclosed.

Abstract: A resin composition, the resin composition comprising a prepolymer (209) and optionally one or more diluent(s) (FIG. 3A), the prepolymer (209) comprising repeating units having at least one carbonate linkage and at least one unsaturated side-chain, the at least one optional diluent(s) comprising at least one unsaturated side-chain, wherein either or both of the prepolymer (209) and the at least one optional diluent(s) comprises at least one O?C—N linkage, preferably a urethane linkage.

Abstract: A roof system comprising a roof substrate, a first membrane including first and second opposed planar surfaces, and a second membrane including opposed first and second planar surfaces, where said second membrane is adhered to said roof substrate through an adhesive disposed on said roof-substrate contacting portion of the first membrane, and where said second membrane is adhered to said first membrane through said adhesive disposed on a lap portion of said second membrane.

Abstract: This compound which has excellent solvent solubility and compatibility with a resin, and which can generate bases and radicals with high efficiency by being irradiated with active energy rays, is represented by formula (1), where, in formula (1), R1, R2, R3, R5 and R6 represent a hydroxy group or an alkoxy group; the R4's independently represent an organic group containing a thioether bond; R7 and R9 independently represent a hydrogen atom or an alkyl group with 1 to 4 carbons; R8 represents an alkylene group or an arylene group; and X represents an oxygen atom or a sulfur atom. A photopolymerization initiator can include said novel compound; and a photosensitive resin composition can include said photopolymerization initiator, from which a cured product can be obtained that has high sensitivity and no metal corrosion.

Abstract: The present invention relates to a security device comprising a colloidal crystal which exhibits excellent visibility and is also easily manufactured. The security device, according to the present invention, comprises: a substrate; a groove part formed on the substrate; a colloidal crystal positioned in the groove part; and an aging film. The security device, according to the present invention, exhibits excellent security and visibility, and thus may be used for securities, credit cards, security cards, anti-forgery products, etc.

Abstract: A solvent-less hybrid curable composition is prepared from grafting polyesters or polyamides onto a (meth)acrylic copolymer backbone. Besides the many benefits of a solvent-less system, the hybrid curable composition forms strong adhesion to polar substrates, widens the use temperatures, and enables faster processing speeds than conventional hybrid curable compositions. The solvent-less hybrid curable composition forms an optically clear single phase that is suitable as tapes and labels, or in electronic, optoelectronic, OLED and photovoltaic devices, and the like.

Abstract: The present invention relates to a photocurable acrylic resin which is a polymer of a monomer mixture including a crosslinkable monomer represented by [Formula 1]; a (meth)acrylic monomer including a photoinitiating functional group; and an alkyl (meth)acrylate-based monomer, and has a weight average molecular weight of 100,000 to 500,000, and a branch-type polymer structure, and an adhesive composition and an adhesive film including the same.

Abstract: An example method, performed by an edge data network configuration server, of relocating at least one service, currently provided from a source edge data network to at least one terminal, to a plurality of edge data networks having a hierarchical structure includes obtaining a service relocation request from the at least one terminal, determining relocation candidate services by reflecting the service relocation request, determining priorities of the relocation candidate services, obtaining location information of the at least one terminal, determining a relocation target service and a target edge data network based on at least one of the priorities or the location information, and requesting the target edge data network to provide the relocation target service to the at least one terminal, wherein the source edge data network and the target edge data network are hierarchically included in different tiers.

Abstract: Ionized radiation-absorbed, dose sensitive, highly flexible polymeric compositions are provided that exhibits multidirectional changes in refractive index. Also provided are methods of producing a precision multi-directional nanogradient of refractive index in a polymeric composition.

Abstract: Electron beam curable compositions including polyols, and any blend of ethylenically unsaturated monomers and oligomers. The polyols of the invention are preferably essentially free of any ethylenically unsaturated groups, have greater than one hydroxy group and preferably have boiling points in excess of 170° C.

Abstract: A curable composition contains: a cardo skeleton-containing monomer having two or more (meth)acryloyl groups in a molecule; an aromatic ring-containing monofunctional (meth)acrylate monomer; and an acidic phosphate ester, in which the acidic phosphate ester is a compound represented by General Formula (1), and the content of the acidic phosphate ester is 0.003% to 1% by mass with respect to a total mass of the curable composition.

Abstract: Clear inks are prone to heat-induced micro-gelling that can cause their storage stability to drop, and micro-gelling may also occur in clear inks with the passage of time, in which case their inkjet discharge property may drop. As a solution, a photocurable clear ink composition for inkjet printing is provided, which contains a photopolymerizable compound, a photopolymerization initiator, and an inorganic filler of 1 to 200 nm in average grain size accounting for 0.05 to 5.0 percent by mass in the composition, and whose visible light transmission factor is 30% or higher.

Abstract: A fabrication process and apparatus for producing three-dimensional objects by depositing a first polymer layer, printing a first ink layer on to the first polymer layer, depositing a second polymer layer on to the first ink layer, and printing a second ink layer on to the second polymer layer. The deposition and printing steps may be repeated until a three-dimensional object is formed. The inks used to form at least one of the first and second ink layers may include dyes or pigments so that the three-dimensional object may be a colored three-dimensional object.

Abstract: Small-radius coated optical fibers having large mode field diameter and low bending losses. The coated fiber may have an outer radius of 110 ?m or less, while providing a mode field diameter of 9.0 ?m or greater and a bending loss when wrapped about a 15 mm mandrel of 0.5 dB/km or less at wavelength of 1550 nm. The coated fiber may have a mode field diameter of 9.2 ?m or greater and may have a bending loss at 1550 nm of 0.25 dB/km or less when wrapped about a 20 mm mandrel or a bending loss at 1550 nm of 0.02 dB/km or less when wrapped about a 30 mm mandrel.

Abstract: An adhesive composition may include 100 parts by weight of a (meth)acrylic polymer (A), 45 to 65 parts by weight of isoboronyl acrylate (B), and 0.1 to 10 parts by weight of a photoradical polymerization initiator (C). Each molecule of the (meth)acrylic polymer (A) may have at least one group represented by the general formula (1) at a molecular terminal: —OC(O)C(R1)?CH2 (1), where R1 is a hydrogen atom or an organic group containing 1 to 20 carbon atoms. The (meth)acrylic polymer (A) may have a number average molecular weight (Mn) of 3,000 to 100,000, and a ratio (Mw/Mn) of a weight average molecular weight (Mw) to a number average molecular weight (Mn) of less than 1.8.

Abstract: A photocurable sealing material comprising at least a polythiol compound as a first component, wherein, in the case where the photocurable sealing material is used to produce two sheets having a thickness of 1 mm, a width of 25 mm, and a length of 200 mm, the two sheets are photocured by irradiation with an ultraviolet ray, then the photocured sheets are laminated, and the laminate is subjected to a load of 10 kg for 10 seconds, an action of causing the lamination interface between the two sheets to disappear is exhibited, and the self-adhesion strength in a T-type peel test is 5 N/25 mm or more when the sheets are pulled at a peel speed of 300 mm/min.

Abstract: An ink jet method includes: a discharging step of discharging a radiation-curable ink jet composition onto a recording medium at an ink weight per dot of 22 ng/dot or less by using an ink jet head having a nozzle density of 600 npi or more and configured to discharge the radiation-curable ink jet composition; and an irradiating step of irradiating, with radiation, the radiation-curable ink jet composition attached to the recording medium. The radiation-curable ink jet composition contains polymerizable compounds containing a monofunctional monomer and a multifunctional monomer. The monofunctional monomer includes a nitrogen-containing monofunctional monomer. The amount of the monofunctional monomer is 90 mass % or more relative to the total amount of the polymerizable compound. The amount of the nitrogen-containing monofunctional monomer is from 1 to 15 mass % relative to the total amount of the polymerizable compounds.

Abstract: The present invention aims to provide a photocurable resin composition capable of constituting a composition having high printability. The present invention relates to a photocurable resin composition containing (A) an allylic polymer produced by polymerization of an allylic compound represented by the following formula (I), and (B) a gelling agent, wherein R1 and R2 each represent H or CH3; X represents an a-valent group having an unsubstituted saturated or partially unsaturated four- to eight-membered cyclic structure; and a represents 2 or 3.

Abstract: A composition including: a plurality of quantum dots; a monomer combination including a first monomer having at least two thiol groups at terminal ends of the first monomer and a second monomer having at least two carbon-carbon double bonds at terminal ends of the second monomer; and an additive, a composite prepared therefrom, and an electronic device including same are disclosed. The additive includes a cyclosiloxane compound having a reactive moiety, a (meth)acrylate salt of a polyvalent metal, and a dithiocarbamate salt of a polyvalent metal, or a combination thereof, and wherein the reactive moiety includes a carbon-carbon double bond, a thiol group, or a combination thereof.

Abstract: The present disclosure provides a method for preparing o-phenyl phenoxyalkyl acrylate, including: transesterifying an acrylate-based compound with a biphenyl alcohol compound in the absence of a solvent and in the presence of a catalyst and a polymerization inhibitor to prepare the o-phenyl phenoxyalkyl acrylate represented by the following formula (II), wherein the catalyst is a compound containing a tin element or a titanium element. According to the method of the present disclosure, the o-phenyl phenoxyalkyl acrylate having transparency and high refractive index can be obtained. Moreover, the method of the present disclosure has the characteristics of high conversion rate and high selectivity, and does not need to add other organic solvents, so that many purification processes can be saved, and the production cost is effectively reduced, which has the value of industrial application.

Abstract: The invention relates to functionalized, telechelic polymers synthesized by enzymatic catalysis and methods, and the functionalization of polymers via Michael addition with a lipase catalyst, and the crosslinking of mono- or difunctional (telechelic) polymers made by enzymatic catalysis, such as by using multifunctional coupling agents and enzyme catalysts. Quantitative transesterification of vinyl methacrylate with poly(ethylene glycol), poly(isobutylene) and poly(dimethylsiloxane) was achieved using Candida antarctica lipase B. In addition, methacrylate-functionalized poly(ethylene glycol) monomethyl ether has been successfully coupled to aminoethoxy poly(ethylene glycol) monomethyl ether via Michael addition using Candida antarctica lipase B. Amine-functionalized poly(ethylene glycol)s have also been used for the preparation of poly(ethylene glycol)-based dendrimers and gels through Michael addition of the polymer onto triacryloyl hexahydro-triazine using the same enzyme.

Abstract: An energy curable foam inhibition ink composition comprises an oligomer component consisting of 5-15% by weight of the ink composition, a photoinitiator component consisting of 5-15% by weight of ink composition, a monofunctional monomer component consisting of 20-40% by weight of ink composition, a difunctional monomer component consisting of 10-20% by weight of the ink composition, and an inhibitor additive consisting of 5-20% of the ink composition.

Abstract: A method of manufacturing a liquid electrophotographic ink concentrate includes: milling a mixture comprising ink pigments and polyamine-based dispersants in the presence of milling media to produce nano-scale ink pigments having an average particle size of less than 100 nanometers; and attaching at least one nano-scale ink pigment near surfaces of a base resin particle to form a pigment-resin composition.

Abstract: Disclosed is a composition such as a pigmented free radical UV-curable inkjet liquid composition for the printing of food packaging materials, which when cured in ambient air produces minimal contamination of the foodstuff. This composition uses non-polymeric photoinitiators having molecular weights less than 500 amu that migrate at levels below the specified SML (specific migration limit).

Abstract: A copolymer includes a first group that is hydrophobic and a second group that is crosslinkable. Moreover, a glass substrate includes a coating of the copolymer, with interposition of a layer of silane including a functional group capable of reacting with the crosslinkable group. The glass substrate may be used as hydrophobic glazing for a transport vehicle, shower cubicle wall or easy-to-clean interior glazing.

Abstract: This invention relates to nail coating compositions, to packages including the nail coating compositions, to methods of applying the nail coating composition to a nail and to a use of an additive compound to improve the properties of the nail coating composition of the present invention. In particular, the invention relates to nail coating compositions having improved chip resistance, good adhesion to the nail, a high gloss finish and a short dry-to-touch time.

Abstract: An optical polymeric material that can substantially block the transmission of ultraviolet light as well as selected portion of violet light. The polymeric material will include monomeric units of one or more lens monomers, and monomeric units of a monomer of formula (I).

Abstract: Light redirecting film is disclosed. The light redirecting film includes a first major surface that includes a plurality of first microstructures that extend along a first direction. The light redirecting film also includes a second major surface that is opposite to the first major surface and includes a plurality of second microstructures. The second major surface has an optical haze that is not greater than about 3% and an optical clarity that is not greater than about 85%. The light redirecting film has an average effective transmission that is not less than about 1.75.

Abstract: The invention relates to novel copolymers and to an associated preparation method, comprising recurrent units bearing a pendant chain of the polyoxyalkylene type.

Abstract: An integrated silicone for protecting electronic devices includes a base resin, a thermal initiator, and a photoinitiator.

Abstract: This invention refers to photo-crosslinked hydrogel materials based in gellan gum suitable for tissue engineering and regenerative medicine applications or as drug delivery systems. Formulations of gellan gum with different degrees of acylation serve as precursor material for insertion of a polymerizable moiety. The materials are capable of free radical polymerization with a photo-initiator at mild temperatures and exposure to ultraviolet light, enabling control of reticulation and withstanding the encapsulation of human and animal cells and/or drugs, and any combination thereof. The physicochemical and biological properties can be adjusted by combining different formulations of gellan gum and reaction conditions.

Abstract: A photosensitive resin composition for a color filter includes (A) an acrylic-based binder resin including a structural unit represented by the following Chemical Formula 1, wherein the definitions of R1, R2, R3 and R4 are the same as set forth in specification; (B) an acrylic-based photopolymerizable monomer; (C) a photopolymerization initiator; (D) a colorant; and (E) a solvent.

Abstract: A dual-cure curable material kit comprising: (A) a radical-polymerizable monomer component; (B) a photopolymerization initiator component comprising (b1) an ?-diketone compound, (b2) an aliphatic tertiary amine compound having a tertiary amino group in which three saturated aliphatic groups are bonded to a nitrogen atom and one of the saturated aliphatic groups has an electron-withdrawing group as a substituent, and (b3) an s-triazine compound having a trihalomethyl group as a substituent, or a diaryliodonium salt compound; and a chemical polymerization initiator component (C) comprising (c1) an organic peroxide, and (c2) an N,N-di(hydroxyalkyl)-p-toluidine compound; which is packed separately at least in two packages so that the component (b2) and the component (b3) of the photopolymerization initiator component (B) are not packed together in a single package and the component (c1) and the component (c2) of the chemical polymerization initiator component (C) are not packed together in a single package.

Abstract: Corrosion-resistant, self-priming coatings that are curable by ultraviolet energy and methods for coating surfaces using such coatings have been provided. In an exemplary embodiment, a method for coating a surface includes formulating a chromium-free, self-priming coating, applying the chromium-free, self-priming coating to the surface, and curing the chromium-free, self-priming coating with ultraviolet light.

Abstract: A photocurable resin composition for three-dimensional photofabrication operations, including stereolithography, comprising (A) a cationically polymerizable compound having two or more bisphenol structures and one or more hydroxyl groups, (B) a cationically polymerizable compound other than the component (A), (C) a cationic photoinitiator, (D) a radically polymerizable compound, (E) a radical photoinitiator, and (F) multilayer polymer particles having a core and a shell layer, the shell layer containing functional group-modified rubber polymer particles having at least one reactive functional group.

Abstract: The radiation curable ink compositions exhibit fasting curing, high flexibility and good adhesion to a broad range of substrates. The ink compositions include a dendritic or hyperbranched polyester acrylate component, which is present in an amount of 10-45% by weight and has a functionality of greater than 5. The compositions further include an oligomer component, a monomer component, a photoinitiator component, a colorant component, and an additive component. The compositions have a viscosity of not greater than 40 cP at 25° C. The radiation curable compositions are suitable for inkjet printing on a variety of substrates.

Abstract: Hot melt compositions include non-aromatic cyclic (alkyl)acrylates and low acid number waxes. Upon application of actinic radiation, the hot melt compositions cure to form resists. They may be stripped from substrates with high alkaline strippers. The hot melt compositions may be used in the manufacture of printed circuit boards and photovoltaic devices.

Abstract: A heat-resistant cured product is efficiently produced by obtaining a semi-cured product where a curable resin composition containing a (meth)acrylate monomer, a non-conjugated vinylidene group-containing compound and a thermal radical-polymerization initiator is processed by at least one of photoirradiation and heating to give a semi-cured product having a complex viscosity of from 105 to 108 mPa·s at 25° C. and at a frequency of 10 Hz; and putting the semi-cured product in a forming die for pressure formation therein, and heating it therein for thermal polymerization to give a cured product.

Abstract: The invention includes a composition comprising a vinyl sulfone monomer, a thiol monomer and an acrylate monomer. In one embodiment, the thiol monomer reacts with the vinyl sulfone monomer preferentially over the acrylate monomer, and this differential selectivity allows for the control of the architecture of crosslinking polymer network. The invention further includes a composition comprising an electrophilic monomer, a nucleophilic monomer, a nucleophilic catalyst and an acid, wherein the concentrations of the nucleophilic catalyst and acid are selected as to provide a specific induction time for the polymerization reaction of the composition.

Abstract: In one embodiment, a resist material to be used in an imprint process includes a diluent monomer having a hydroxyl group and at least one functional group selected from a vinyl ether group, an epoxy group and an oxetanyl group. The material further includes a dendrimer having at least two reactive groups for photo-cationic polymerization. The material further includes a photo-acid generator as a polymerization initiator.

Abstract: A free radical curable liquid for inkjet printing of food packaging materials includes no initiator or otherwise one or more initiators selected from the group consisting of non-polymeric di- or multifunctional initiators, oligomeric initiators, polymeric initiators, and polymerizable initiators; wherein the polymerizable composition of the liquid consists of: a) 25-100 wt % of one or more polymerizable compounds A having at least one acrylate group G1 and at least one second ethylenically unsaturated polymerizable functional group G2 different from the group G1; b) 0-55 wt % of one or more polymerizable compounds B selected from the group consisting of monofunctional acrylates and difunctional acrylates; and c) 0-55 wt % of one or more polymerizable compounds C selected from the group consisting of trifunctional acrylates, tetrafunctional acrylates, pentafunctional acrylates and hexafunctional acrylates.

Abstract: An ink composition which is used for active energy ray-curable inkjet printing, has excellent curability or adhesiveness to multiple base materials while having low viscosity, and exhibits excellent non-yellowing properties of the printed matter is provided. The composition comprises a polymerizable monomer (A) and photopolymerization initiators (B), the polymerizable monomer comprising 2-(2-vinyloxyethoxy)ethyl acrylate (A-1), and the photopolymerization initiators comprising oligo(2-hydroxy-2-methyl-1-(4-(1-methylvinyl)phenyl)propanone) (B-1) and other initiator (B-2).

Abstract: The invention provides a process for manufacturing a polymeric material having a compositional gradient, comprising: forming a mixture comprising a first photopolymerizable polymer precursor and a second photopolymerizable precursor, and subjecting said mixture to an intensity gradient of electromagnetic radiation, wherein said first precursor has a greater reactivity ratio than said second precursor, and/or said first precursor is mono-functional and said second precursor is di-functional, and/or said first precursor is less inhibited by oxygen than said second precursor.

Abstract: To provide a photo-curable composition for imprints which can ensure high ratio of mold filling and low defect density during mold releasing, and can provide a resist material with high etching durability. A photo-curable composition for imprints comprising a monofunctional monomer, a polyfunctional monomer and a photo-polymerization initiator, having a viscosity at 25° C. of 15 mPa·s or smaller, an Ohnishi parameter of 3.0 or smaller, and a crosslink density calculated by (Formula 1) of 0.6 mmol/cm3 or larger; Crosslink density={?(Ratio of mixing of polyfunctional monomer (parts by mass)*Number of functional groups of polyfunctional monomer/Molecular weight of polyfunctional monomer)}/Specific gravity.

Abstract: Improved methods for preparing polyethylene glycol fumarate) are disclosed. Methods for chemically crosslinking or photocross-linking hydrophilic polyethylene glycol fumarate) with hydrophobic polymers such as poly(propylene fumarate) (PPF) and poly(caprolactone fumarate) (PCLF) to form various hydrogels (FIG. 1) with controllable hydrophilicity are also disclosed. The hydrogels are useful in the fabrication of injectable and in-situ hardening scaffolds for application in skeletal reconstruction. An injectable material including the hydrogels may be useful in controlled drug release.