Abstract: A high-grafting density cyclic comb shaped polymer and its preparation method therefor. The method comprises the following steps: 1) synthesizing linear poly(pentafluorophenyl 4-vinylbenzoate) (l-PPF4VB4.0k); 2) performing photo-induced cyclization on the linear polymer to prepare the cyclic polymer (c-PPF4VB4.0k); 3) performing post modification on the cyclic polymer c-PPF4VB4.0k by using small molecules to prepare a functionalized cyclic polymer (c-P1); 4) then performing polymer post modification on the cyclic polymer (c-P1) by using an efficient click reaction to construct the high-grafting density cyclic comb shaped polymer (c-P1-g-PS); and 5) directly performing polymer post modification on the cyclic polymer c-PPF4VB4.0k by using macromolecules to construct a high-grafting density cyclic comb shaped polymer (c-PPF4VB4.0k-g-PEG), the obtained cyclic comb shaped polymer still remaining the characteristic of a narrow molecular weight distribution.

Abstract: A core-sheath filament including a crosslinkable adhesive core that can be cured using ultraviolet or visible light radiation. These crosslinkable adhesive core compositions can provide very high bond strength and are capable of replacing traditional mechanical fasteners in many industrial applications. Core-sheath filaments including such crosslinkable compositions, crosslinked compositions, articles containing these compositions, and methods of making the articles are provided. The crosslinkable compositions contain pendant aromatic ketone groups or pendant (meth)acryloyl groups that, upon exposure to ultraviolet radiation, result in the formation of crosslinks within the polymeric material. The crosslinked compositions can function as pressure-sensitive adhesives.

Abstract: Polymer matrix composite comprising a porous polymeric network; and a plurality of thermally conductive particles distributed within the polymeric network structure; wherein the thermally conductive particles are present in a range from 15 to 99 weight percent, based on the total weight of the thermally conductive particles and the polymer (excluding the solvent); and wherein the polymer matrix composite has a density of at least 0.3 g/cm3; and methods for making the same. The polymer matrix composites are useful, for example, in electronic devices.

Abstract: Dental material which contains (a) at least one mono- or multifunctional radically polymerizable monomer, (b) at least one organic halogen compound as initiator for the radical polymerization, (c) at least one transition metal compound as catalyst and (d) at least one reducing agent. The material is characterized by a high storage stability at room temperature and does not have the disadvantages associated with peroxides.

Abstract: A liquid crystal aligning agent composition for forming a liquid crystal alignment film having improved electrical characteristics and high reliability while exhibiting excellent alignment properties and durability, a method for preparing a liquid crystal alignment film using the same, and a liquid crystal alignment film and a liquid crystal display device using the liquid crystal alignment film.

Abstract: The invention pertains to the technical field of urethane based materials, in particular to radiation curable urethane precursors that are cross-linkable in solid form and materials obtainable therefrom. In addition the invention pertains to methods for manufacturing these precursors and materials, and their uses. The invention is advantageous to the fields of i.e. coatings and biomedical applications.

Abstract: Provided is a method of preparing a rubber composition, which includes (a) reacting a conjugated diene-based monomer with one or more of compounds in the presence of a first catalyst; (b) adding a conjugated diene-based monomer to a product of the step (a) and inducing a reaction; and (c) adding a second catalyst and a conjugated diene-based monomer to a product of the step (b) and inducing a reaction.

Abstract: The invention pertains to the technical field of urethane based materials, in particular to radiation curable urethane precursors that are cross-linkable in solid form and materials obtainable therefrom. In addition the invention pertains to methods for manufacturing these precursors and materials, and their uses. The invention is advantageous to the fields of i.e. coatings and biomedical applications.

Abstract: A flexible display device includes a hard coating layer, the hard coating layer including hard coating oligomers, cross-linking oligomers that couple the hard coating oligomers, and a photoinitiator, the cross-linking oligomers being synthesized by catalytically reacting cross-linking monomers. The hard coating layer may include long cross-linking oligomers that improve the flexibility of the hard coating layer, and damage to the hard coating layer may be prevented or reduced even when the flexible display device is bent.

Abstract: The present invention provides an optical composition from which an optical article having reduced poor appearance such as cloudiness and optical strain during lens base material production can be obtained, and when a photochromic compound is added, a photochromic cured body having excellent photochromism and mechanical strength can also be formed, and a polyrotaxane used therefor. The polyrotaxane has a composite molecular structure formed of an axle molecule and a plurality of cyclic molecules clathrating the axle molecule, satisfying at least one of (X) and (Y). (X): A side chain having a secondary or tertiary hydroxyl group is introduced into at least part of the cyclic molecule of the polyrotaxane. (Y): A side chain having a group represented by -A (A is an organic group, and contains at least one hydroxyl group) is introduced into at least part of the cyclic molecule of the polyrotaxane, and a pKa of the hydroxyl group of the compound represented by H-A is 6 or more and less than 14.

Abstract: Provided herein are processes for the generation of composite polymer materials utilizing a single resin. The processes utilize diffusion between a region undergoing a polymerization reaction preferentially polymerizing one monomer component and an unreactive region. Diffusion and subsequent/concurrent polymerization results in a higher concentration of the more reactive monomer component in the reacting region and a higher concentration of the less reactive monomer components in the unreactive region. The unreactive region may be later polymerized. In embodiments, photopolymerization is used and the regions are generated by a mask or other mechanism to pattern the light.

Abstract: Use of compounds selected from polyols derived from dimer fatty acids and/or dimer fatty alcohols as toughening agent in a process for making polyisocyanate polyaddition reaction products, in particular for polyisocyanate polyaddition reaction products having a hardblock >40% and a process for making said products.

Abstract: The present invention provides a material of high toughness that could not have been provided by an epoxy resin alone. The present invention provides a crosslinking composition having (A) one or more polyrotaxanes in which end-capping groups which prevent dissociation of the linear group are situated at both ends of a pseudo-polyrotaxane formed by inclusion of a linear molecule in the opening of a cyclic molecule by being threaded therethrough, the polyrotaxane having on the cyclic molecule a functional group that is capable of reacting with the oxirane group and/or the oxetane group, the functional group being one or more selected from the group consisting of carboxylic acid groups, carboxylate groups, primary amine groups, secondary amino groups, tertiary amino groups, phenol groups, the oxirane group, and the oxetane group, and (B) a compound having two or more oxirane groups and/or oxetane groups; and a crosslinked product employing the composition.

Abstract: A flexible display device includes a hard coating layer, the hard coating layer including hard coating oligomers, cross-linking oligomers that couple the hard coating oligomers, and a photoinitiator, the cross-linking oligomers being synthesized by catalytically reacting cross-linking monomers. The hard coating layer may include long cross-linking oligomers that improve the flexibility of the hard coating layer, and damage to the hard coating layer may be prevented or reduced even when the flexible display device is bent.

Abstract: A method for curing and surface functionalization of molded parts, including processing materials that contain at least one unsaturated radically or cationically curable reactive resin system and further substances to form a molded part and cross-linking the materials up to dimensional stability during or after the processing. The method additionally includes subjecting the molded part to energetic radiation or energetic particles at least one of during the cross-linking and subsequent to the cross-linking to essentially complete curing at least of a surface region of the molded part to produce an essentially completely coatable molded part surface.

Abstract: A liquid photo-curable adhesive composition comprising: (a) 5 to 30 wt % of urethane acrylate, (b) 30 to 80 wt % of plasticizer, (c) 0.02 to 5 wt % of photo initiator, (d) 0 to 30 wt % of acrylate monomers and/or oligomer, is described.

Abstract: Methods of making a wear and oxidation resistant medical implant are disclosed.

Abstract: The present invention relates to methods for making cross-linked oxidation-resistant polymeric materials and preventing or minimizing in vivo elution of antioxidant from the antioxidant-containing polymeric materials. The invention also provides methods of doping polymeric materials with a spatial control of cross-linking and antioxidant distribution, for example, vitamin E (?-Tocopherol), and methods for extraction/elution of antioxidants, for example, vitamin E (?-tocopherol), from surface regions of antioxidant-containing polymeric materials, and materials used therewith also are provided.

Abstract: Disclosed are aqueous pharmaceutical compositions which provide sustained released delivery of corticosteroid compounds. The pharmaceutical composition comprises an insoluble corticosteroid; a soluble corticosteroid; and at least one viscosity enhancing agent. Also provided are methods for using the pharmaceutical compositions in an epidural injection, intra-articular injection, intra-lesional injection, or an intra-ocular injection.

Abstract: The present invention provides a resin material composition including 25 to 65% by mass of a thermoplastic polyolefin resin, 0.5 to 22% by mass of a glass wool, and 5 to 35% by mass of a thermoplastic elastomer.

Abstract: A novel transparent double-sided adhesive sheet for image display device is provided, that, under the constraint of holding down the thickness of the adhesive sheet to 250 ?m or less, can relieve a distortion arising within the adhesive sheet after laminating even if a member has a stepped portion of 50 ?m to 100 ?m in height on the laminating surface. Proposed is a transparent double-sided adhesive sheet for image display device which is used for the purpose of laminating an image display device constitutive member having on a laminating surface a stepped portion of 50 ?m to 100 ?m in height and a flat surface portion, and another image display device constitutive member, wherein a thickness of the maximum thickness portion of the adhesive sheet is 250 ?m or less, and a gel fraction (a) at a position in contact with a stepped portion after laminating is 10% or greater and smaller than a gel fraction (b) at a position in contact with a flat surface portion.

Abstract: A novel transparent double-sided adhesive sheet for image display device is provided, that, under the constraint of holding down the thickness of the adhesive sheet to 250 ?m or less, can relieve a distortion arising within the adhesive sheet after laminating even if a member has a stepped portion of 50 ?m to 100 ?m in height on the laminating surface. Proposed is a transparent double-sided adhesive sheet for image display device which is used for the purpose of laminating an image display device constitutive member having on a laminating surface a stepped portion of 50 ?m to 100 ?m in height and a flat surface portion, and another image display device constitutive member, wherein a thickness of the maximum thickness portion of the adhesive sheet is 250 ?m or less, and a gel fraction (a) at a position in contact with a stepped portion after laminating is 10% or greater and smaller than a gel fraction (b) at a position in contact with a flat surface portion.

Abstract: [Problem] To provide a photocurable sealing material which exhibits stable physical properties, particularly permanent compression set when subjected to a heat resistance test in an atmosphere of 100 to 150° C., and has a stable applying shape and storage stability. [Solution] A photocurable composition containing components (A) to (C) mentioned below, in which the mass ratio of the component (A) to the component (B) is 3:7 to 8:2; component (A): a compound having a polymer of a (meth)acrylic monomer as a main skeleton and having one (meth)acryl group at each of the both terminals; component (B): a compound having a polymer of a (meth)acrylic monomer as a main skeleton and having one (meth)acryl group at only one terminal; and component (C): a photoinitiator.

Abstract: The present invention relates to aqueous hybrid binders comprising an aqueous polymer dispersion (PD), and also 0.01%-5% by weight of a photoinitiator, and also to aqueous alkyd systems comprising a water-soluble alkyd resin or an aqueous alkyd or polyurethane emulsion or dispersion, and also 0.01%-5% by weight of a photoinitiator, and to the use thereof in coating compositions, more particularly in coating materials.

Abstract: This invention relates to film composites with a single coating of hard coat material which have a significant improved adhesion together with improved weather resistance while also increasing resistance to abrasion and cracking. In one embodiment, this film composite is comprised of a transparent base sheet having on one side thereof a weather resistant hard coat comprised of: at least one multifunctional acrylate monomer or oligomer; a dual-curable resin comprising an aliphatic urethane acrylate resin having isocyanate functional groups and an aliphatic urethane acrylate having hydroxyl functional groups; an ultraviolet (UV) stabilizer; and a photoinitiator.

Abstract: Adhesive compound as a permeant barrier, comprising (i) block copolymers having a construction A-B-A, (A-B)n, (A-B)nX, or (A-B-A)nX, where X is the radical of the coupling reagent, n is a whole number between 2 and 10, A is a polymer made of a vinyl aromatic compound and B is a polymer block made of an alkene or diene, wherein this polymer block can also be hydrated, with the condition that at least part of the A blocks is sulfonated, optionally with two-block copolymers in the form of A-B as an admixture component, and (ii) at least one tackifier resin.

Abstract: Polymeric particles having a size of about 0.1 to about 100 microns comprising at least two different phase separated polymers, at least one pigment, and at least one additive, where the pigment and additive are distributed within the phase separated polymers. Also disclosed are methods for preparing polymeric particles comprising phase separated polymers that comprise additives and pigments, wherein the methods involve molding.

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: The present invention discloses a composition for preparing a bonding material for use in a circuit board comprising a polymerizable acrylate system and a curable epoxy resin system, the composition being photocurable. The present invention also provides a circuit board comprising the bonding material.

Abstract: The present invention provides a resin composition for an insulating film which resin composition is excellent in tack property after drying and allows a resultant insulating film to be excellent in flexibility and electrical insulation reliability and to be small in warpage after curing, a resin film for an insulating film, an insulating film, and a printed wiring board provided with an insulating film. The resin composition for an insulating film contains at least: a (A) binder polymer; and (B) cross-linked polymer particles, whose polymer has a urethane bond and a carbonate skeleton in its molecule.

Abstract: Methods of producing an elastomer are disclosed that include (I) applying a composition that includes a urethane (meth)acrylate to a substrate at a thickness of at least 10 mils; (II) exposing the composition ultraviolet radiation to produce a cured film; and (III) removing the film from the substrate. Related compositions are also disclosed.

Abstract: Photoactive additives, such as cross-linkable polycarbonate resins, are disclosed. The additive is formed from the reaction of a monohydroxybenzophenone, a dihydroxybenzophenone, a diol chain extender, and one or more linker moieties having functional groups that react with the phenolic groups on the other ingredients. If desired, a secondary linker moiety and/or an end-capping agent can be used. When added to a base polymeric resin, the photoactive additive permits crosslinking when exposed to ultraviolet light.

Abstract: A materials system and methods are provided to enable the formation of articles by 3D printing. In some embodiments, a materials system includes a substantially dry particulate material that includes an insoluble filler, a soluble filler, and a transition metal catalyst. The materials system further comprises a fluid binder including a (meth)acrylate monomer, an allyl ether functional monomer and/or oligomer, and a free-radical photoinitiator.

Abstract: Polymeric blends having improved flame retardance properties and good ductility at low temperatures are disclosed. The blend is formed from (A) a photoactive additive that is a cross-linkable polycarbonate resin containing a photoactive group derived from a dihydroxybenzophenone; and (B) a polymer resin which is different from the photoactive additive. The additive can be a compound, oligomer, or polymer. When exposed to ultraviolet light, crosslinking will occur between the photoactive additive and the polymer resin, enhancing the chemical resistance and flame retardance while maintaining ductility.

Abstract: A glass printing ink and glass printing lacquer are prepared, which contain at least one photoinitiator, at least one resin and at least one additional substance. The resin is an epoxy resin based on bisphenol A, diluted in a UV-curing monomer, or a resin with functional groups containing free functional amino, hydroxy, epoxy, acid, acid anhydride and/or acrylate groups, or a combination of the epoxy resin with the resin with functional groups. The at least one additional substance is a wax. The use of the glass printing ink and glass printing lacquer in printing a glass substrate and processes for the printing of a glass substrate are also described.

Abstract: A curable composition that is sufficiently cured even without a heating step at high temperature and from which a low dielectric constant cured film excellent in solvent resistance is obtained. A curable composition containing a fluorinated polyarylene prepolymer (A) having a crosslinkable functional group, a compound (B) having a number average molecular weight of from 140 to 5,000, having at least two crosslinkable functional groups and having no fluorine atoms, a copolymer (C) having the following units (c1) and (c2) and a radical polymerization initiator (D): unit (c1): a unit having a fluoroalkyl group having at most 20 carbon atoms, which may have an etheric oxygen atom between carbon atoms, and having no crosslinkable functional group; unit (c2): a unit having a crosslinkable functional group.

Abstract: Disclosed is a graft polymerization method which has solved problems involved in use of a solvent, a radical initiator and high-energy radiation when a monomer is graft-polymerized on the surface of a polymer base. The graft polymerization method is characterized in that a polymerization product is obtained by immersing a polymer base (i) having a ketone group on the surface into a reaction system containing a monomer (ii) and then irradiating the polymer base (i) with light so that polymerization of the monomer starts from the surface of the polymer base (i).

Abstract: The present invention is to provide a photocurable fluorinated copolymer composition which is uniform and excellent in transparency, and a coating film layer obtainable by using it, is excellent in heat resistance and abrasion resistance and exhibits a particularly excellent weather resistance performance. The photocurable fluorinated copolymer composition comprises a specific fluorinated copolymer (A), a specific hydrolysable silane compound (B), an epoxy resin (C) having a cyclohexane ring structure, and a photoreaction initiator (D).

Abstract: Reinforced polyimide compositions that include a reinforcing filler and a polyamide flow promoter improve flow promotion while maintaining other mechanical, thermal, flame and/or electrical properties of the compositions. The compositions may include an inorganic or organic reinforcing filler, a polyimide resin such as polyetherimide or polyamideimide and a small amount of an aromatic or aliphatic polyamide as the flow promoter. The resulting compositions may be used in thinner-wall applications while still retaining the advantageous physical properties of reinforced polyimide compositions not having the flow promoter. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Abstract: Crosslinked polyolefin blends, methods for their production, and articles made of the same are provided. In at least one specific embodiment, the polyolefin blends comprise a first polymer formed in a first reactor and a second polymer formed in a second reactor. The first and second polymers, as well as the resulting blend, may comprise units derived from propylene, ethylene, and a diene. The blended composition can then be compounded with one or more coagents, antioxidants, UV sensitizers, and/or other additives and crosslinked, preferably by exposure to UV radiation and/or energetic photons. The crosslinked polymers are particularly useful for making fibers, films, and nonwovens.

Abstract: Processes for increasing the chemical resistance of a surface of a formed article are disclosed. The formed article is produced from a polymeric composition comprising a photoactive additive containing photoactive groups derived from a monofunctional benzophenone. The surface of the formed article is then exposed to ultraviolet light to cause crosslinking of the photoactive additive and produce a crosslinked surface. The crosslinking enhances the chemical resistance of the surface. Various means for controlling the depth of the crosslinking are also discussed.

Abstract: A hydrogel material for use in three-dimensional scaffold printing is disclosed. The material is formed from a first triblock polymer having a formula ABA and a second triblock polymer having a formula AmaBAma, wherein A is a first polymer, B is a second polymer, and Ama is a methacrylate of the first polymer. The material is thermosensitive and photocrosslinkable. A method of manufacturing the material is also disclosed.

Abstract: An actinic radiation activated, thermally curable solid film adhesive is disclosed that includes a film forming polymeric binder, a cationically curable resin, and a cationic photoinitiator. The solid film adhesive is capable of being processed at temperatures up to 120° C. prior to exposure to actinic radiation without curing, has a latency period at room temperature following activation of the initiator, and is curable at temperatures above 50° C. following activation of the initiator.

Abstract: A coating agent to be applied and permeated into a print pattern of a water pressure transfer film has a main ingredient of a ultraviolet hardening resin composite containing a photo-polymerization monomer, a photo-polymerization oligomer and a photo-polymerization initiator, said photo-polymerization monomer has 3 or less functional groups and a volume shrinkage coefficient of 20% or less, said photo-polymerization oligomer has 10 or less functional groups, the coating agent further contains polyurethane beads having an average particle diameter of 5 through 50 micrometer and the polyurethane beads are blended at 15 through 100 weight part relative to 100 weight part of said ultraviolet hardening resin composite. This coating agent can impart a softness feeling and a wetness feeling to the surface of the decoration layer by the polyurethane beads.

Abstract: The present invention relates to a polymer compound including a dye, and a curable resin composition including the same. The polymer compound including the dye according to the present invention may exhibit characteristics such as excellent heat resistance, solubility, coating uniformity, chemical resistance and the like by introducing a single molecule type dye into a side chain of a polymer binder to be modified into a polymer form and applying the modified polymer to a curable composition.

Abstract: The present invention relates radiation curable composition comprising at least one ethylenically unsaturated compound (A); at least one inert polyester resin (B); and at least one inert resin (C) different from (B). These present invention further relates to their preparation and their uses, especially in inks.

Abstract: The conductive polyrotaxane of the present invention contains an electron-accepting cyclic molecule in each of its repeating unit. Since the electron-accepting cyclic molecule remains stable because of molecular interaction with a ?-conjugated oligomer molecule, the electron-accepting cyclic molecule is not dissociated during rotaxane polymerization reaction, and thus a conductive polyrotaxane of stable quality can be obtained.

Abstract: Provided is a resin blend including a first resin and a second resin, the second resin having a hydrophobic functional group in a side chain and having a surface energy difference of 0.1 to 20 mN/m from the first resin at 25° C., the resin blend being capable of forming a layer separation structure. Also, provided are a pellet, a method for preparing the same, and a resin molding articlemolding article having a specific layer separation structure. The resin blend may not only improve mechanical properties and surface hardness of the molding articlemolding article but also shorten process time, increase productivity and reduce production cost by omitting an additional surface coating step.

Abstract: Provided are a polyrotaxane capable of using an aqueous solvent in a fabricating process although it has hydrophobicity, an aqueous composition having the polyrotaxane, a crosslinked body comprising the polyrotaxane, etc. The polyrotaxane comprises blocking groups located at both ends of a pseudo-polyrotaxane having cyclic molecules and a linear molecule which pierces the cavities of the cyclic molecules in a skewered manner to form a clathrate therewith so as not to detach the cyclic molecules, wherein the cyclic molecules have a group represented by Formula I, a group represented by Formula II and a group represented by Formula III. Incidentally, M represents, for example, a group derived from ring-opening polymerization of ?-caprolactone or the like, A represents a hydroxy group or the like, B represents a —COOH group or the like, and C represents A and/or B: -M-A??Formula I; -M-B??Formula II; and —C??Formula III.

Abstract: Disclosed herein is a method of making a modified pigment, comprising: reacting, under Mitsunobu conditions: (a) a first reactant comprising a protonated nucleophile having a pKa<15, and (b) a second reactant comprising a hydroxyl-containing organic group, wherein a pigment is attached to either the first or second reactant. The method further comprises forming the modified pigment having attached an organic species comprising the nucleophile bonded to the organic group, with the net elimination of a proton and a hydroxyl. Also disclosed herein are modified pigments, which can have applications in chemical toners, inkjet ink and electrophoretic ink compositions, black matrix materials, color filters, and coatings.