Abstract: Active water compatible actinic radiation curable printing ink or coating compositions comprised of maleimide derivatives, water compatible resins and water, which are capable of curing at a practical intensity and energy level and a method for curing same.

Abstract: This invention provides a high-solids coating composition which comprises (A) a compound which has at least one radically polymerizable unsaturated group per molecule, (B) a hydroxyl group-containing ester compound which is obtained by ester-forming addition reaction between 2,2-dimethylolalkanoic acid having 6 to 8 carbon atoms and alkanoic acid monoglycidylester, and which has an acid value of 20 mgKOH/g or less, (C) a curing agent which is reactive with the above-mentioned hydroxyl group-containing ester compound (B), and (D) a photopolymerization initiator, and also provides a process to form a coating film by spray coating of said coating composition, which process is characterized by irradiating flying paint particles which have been sprayed and/or paint which has been applied onto a substrate with active energy ray so as to make the coating composition partially react, and by subsequently heating the coating composition.

Abstract: The present invention provides a photo-alignment layer for a liquid crystal display device, which has good liquid crystal display device characteristics such as a good voltage holding ratio and also has good alignment stability and sufficient resistance to light and heat. The photo-alignment layer is manufactured by coating a polymerizable monomer having at least one photo-alignment moiety, which carries out a photo-alignment function by the photo dimerization reaction, and at least two polymerizable maleimide groups per molecule on a substrate, and exposing the coating layer to light to cause the photo dimerization reaction of the structural unit and the photopolymerization reaction of the polymerizable maleimide group, thereby to form a crosslinked polymeric layer and to enable the polymeric layer to carry out the photo-alignment function.

Abstract: The invention relates to novel reactive polymers of formula wherein the variables are as defined in the claims. The polymers of the invention are useful for the modification of material surfaces and are particularly suitable for providing biomedical articles such as contact lenses with a hydrophilic coating.

Abstract: Disclosed are novel colorant compounds which contain one or more ethylenically-unsaturated (vinyl), photopolymerizable radicals which may be copolymewrized (or cured) with ethylenically-unsaturated monomers to produce colored compositions such as colored acrylic coatings and polymers, e.g., coatings and polymers produced from acrylate and methacrylate esters, colored polystyrenes, and similar colored polymeric materials derived from other ethylenically-unsaturated monomers. The present invention also pertains to processes for the preparation of certain of the photopolymerizable colorant compounds.

Abstract: The present invention relates to a composition for coating optical fibers that includes a UV curable coating composition. The composition includes at least one component having at least one heterocyclic moiety capable of undergoing ring opening polymerization. The composition may also include at least one acrylate functional end group. The acrylate functional group may be on the same component as the heterocyclic moiety or on a second component. The cured composition has a Young's Modulus of at least about 100 MPa.

Abstract: A curable ink for jet-ink recording comprising a white pigment and a polymerizable compound, wherein the polymerizable compound is a compound selected from the group consisting of: (a) oxetane compounds; (b) pyrrole or substituted pyrroles; (c) aniline or substituted anilines; and (d) thiophene or an substituted thiophenes, provided that when the polymerizable compound is the oxetane compound, the curable ink further comprises an epoxy compound or a vinyl ether compound.

Abstract: Disclosed are thermally-stable, colored, photopolymerizable compounds containing a vinyl group which are capable of being copolymerized with reactive vinyl monomers to produce colored compositions such as polyacrylates, polymethacrylates, polystyrene, etc. The compounds exhibit good thermal stability, fastness (stability) to UV-light, good solubility in the reactive monomers and good color strength.

Abstract: To provide a method for repairing a coated surface of a vehicle, using an ultraviolet curing resin having excellent quick-drying property, and giving a good finish in a shortened working time, a method for repairing the damage on a coated surface of a vehicle being a depression and/or a depletion of a coating film, which is characterized by comprising the following steps a) to c): a) filling a putty raw material comprising an ultraviolet polymerizing resin composition in an optionally pretreated damage portion and ultraviolet curing the putty raw material to fill the damaged portion with the putty; b) uniformly spray coating, on the coated surface including at least the putty-covered surface after the step a), a primer surfacer raw material comprising an ultraviolet polymerizing resin composition having a viscosity sufficient for spray coating and ultraviolet curing the obtained raw material coating film to form a primer surfacer layer; and c) applying a top coat on the primer surfacer layer obtained in b)

Abstract: A thiol-ene polymeric material is disclosed. The material is produced by the photopolymerization of reactants having thiol and olefin moieties. The material can incorporate encapsulated components, including cells. Additionally, the material can be derivatized by reacting the polymeric material with components such as proteins.

Abstract: The invention relates to radiation-curable coating composition containing: a) 10 to 100 wt. % of a urethane (meth)acrylate which contains both (meth)acryloyl groups and free isocyanate groups, b) 0 to 90 wt. % of (meth)acrylates which contain (meth)acryloyl groups but no free isocyanate groups or any isocyanate-reactive groups, the wt. % under a) and b) adding up to 100 wt. %, based on the weight of a)+b), and c) 0 to 10 wt. %, based on the sum of components a) and b) of a UV initiator for free radical polymerization. The invention also relates to metal, plastic, film, wood, leather and mineral substrates coated with the above-mentioned radiation-curable coating composition.

Abstract: A curable resin composition comprises a poly(arylene ether), an acryloyl monomer, an allylic monomer, and an abrasive filler. The composition tolerates high filler contents, cures rapidly, and exhibits excellent toughness after curing. Useful articles prepared from the composition include grinding wheels and cut-off wheels having good wear characteristics.

Abstract: The polyimides of this invention are derived from a Diels-Alder cyclopolymerization of a photochemically generated bisdiene with dienophiles, such as bismaleimides, trismaleimides and mixtures thereof with maleimide end-caps. Irradiation of one or more diketones produces two distinct hydroxy o-quinodimethane (photoenol) intermediates. These intermediates are trapped via a Diels-Alder cycloaddition with appropriate dienophiles, e.g., bismaleimide and/or trismaleimides to give the corresponding polyimides in quantitative yields. When bismaleimides, trismaleimides or mixtures thereof with maleimide end-caps are used as the dienophile, the resulting polyimides have glass transition temperatures (Tg) as high as 300° C. Polyimide films can be prepared by ultraviolet irradiation of high solids content varnishes of the monomers in a small amount of solvent, e.g., cyclohexanone, dimethyl formamide, N-methylpyrollidone and the like.

Abstract: There is provided a process for forming a light emitting polymer comprising photopolymerization of a reactive mesogen having an endgroup which is susceptible to photopolymerization e.g. by a radical polymerization process. Also provided are methods for using the light emitter in displays, backlights, electronic apparatus and security viewers.

Abstract: Disclosed are compositions from which radically initiated oligomers/polymers having a controlled molecular weight, low polydispersity and a vinyl or dienyl end group are prepared. Further subjects of the invention are a process for controlled radical polymerization, oligomers/polymers obtainable by said process and the use of specific addition fragmentation agents for the polymerization process. The addition fragmentation agents are new in part and these are also subject of the present invention. The addition fragmentation agents are of the formula (Ia), (Ib) or (Ic) where Y is a group which activates the double bond towards Michael addition.

Abstract: The present invention relates to a triazine type monomer, and more particularly, to a 1,3,5-triazine type monomer characterized by having at least one amine group and at least two sulfur atoms, which can be used in manufacturing transparent optical resins having excellent refractive index, surface hardness and absorbance as well as an improved workability and the ability to control a wide range of refractive index according to the change in composition by the monomer itself at room temperature or by polymerizing the monomer with a comonomer in the presence of an organic solvent or an initiator.

Abstract: There are disclosed a light-sensitive composition which comprises (A) a polymer having a phenyl group substituted by a vinyl group at a side chain, (B) a photopolymerization initiator and (C) a sensitizer which sensitizes the photo-polymerization initiator, or a light-sensitive composition which comprises (A′) a polymer, the above-mentioned (B) and (C), and (D) a monomer having at least two phenyl groups each of which is substituted by a vinyl group in the molecule of the monomer; and a method of forming a relief image which comprises coating the light-sensitive composition as mentioned above on a support, exposing the composition by exposure or scanning exposure and developing the same to form a relief image on the support.

Abstract: Photopolymerization compositions which include maleimides and processes using the same are disclosed. Polymerization of compositions which include maleimides in combination with a benzophenone compound/hydrogen atom donor sensitizer system may be activated by irradiating the composition with radiation.

Abstract: Described are chiral liquid crystalline polymer materials and polymerizable compounds used for preparing them. The polymer materials can serve as a carrier material or are coated onto a carrier material. Also described are methods of making such materials and using them to make pigment flakes used in paints, printing inks, spray paints, cosmetic products, colored plastics, optical elements and security applications.

Abstract: A precursor polymer that can be electrochemically polymerized to form an electrically conducting polymer. A precursor according to the present invention includes a plurality of electrochemical polymerizable monomers, each monomer having first and second polymer-forming active sites that can be joined by electrochemical polymerization. The monomers also include third and fourth polymer-forming active sites that can be joined chemically in solution. The monomers in the precursor polymer are linked by the third and fourth polymer-forming active sites. The monomers are chosen such the precursor polymer is soluble in a predetermined solvent while the polymer resulting from the electrochemical polymerization of the precursor polymers via the first and second polymer-forming sites is electrically conducting and insoluble in the solvent. The monomers can be synthesized from fluorene, triophene, pyrrol, biphenyl, poly(vinyl carbazole) or poly (vinyl oxy thiophene).

Abstract: The invention provides an photosensitive resin composition excellent in heat resistance and adhesion to wiring layers which yields high resolution after development with aqueous solution containing no organic solvent. The composition is used as an adhesive between circuits in a process producing a multi-layer printed wiring board by a built-up method. The composition comprises a compound (A) having the molecule at least one phenolic hydroxyl group and at least one acryloyl or methacryloyl group, an unsaturated imide compound (B), a photopolymerization initiator (c) and, optionally, an epoxy compound (D) having at least two epoxy groups in the molecule. Also, provided for is a multilayer printed wiring board comprising wiring layers and insulating layers, which are alternatively formed wherein said insulating layers are formed of said composition.

Abstract: Polyamides, polyesters, and polyamideesters are efficiently synthesized in a microwave process with precise temperature control. Compared to conventional thermal polymerizations, the microwave process takes less time and produces polymers with equivalent or superior physical properties.

Abstract: A process for forming a light emitting polymer wherein photopolymerization is carried out using a reactive mesogen having an endgroup susceptible to photopolymerization, e.g., by a radical polymerization process. Also, the light emitting polymer produced and methods for using the light emitter in displays, backlights, electronic apparatus and security viewers.

Abstract: A UV-curable acrylate-thiol-ene insulating coating composition for electrical conductors, a method of manufacturing a UV-curable acrylate-thiol-ene insulating coating composition for electrical conductors. The insulating coating being of about 2.5 &mgr;m to about 500 &mgr;m thickness, which cured coating has a dielectric dissipation factor (60 Hz, 24° C.) of lower than about 0.05.

Abstract: A terploymer containing N-halogenated phenyl maleimide units or N-halogenated phenyl bismaleimide units, one or more second units selected from the group consisting of halogenated acrylates, halogenated styrenes, halogenated vinyl ethers, halogenated olefins, halogenated vinyl isocyanates, halogenated N-vinyl amides, halogenated allyls, halogenated propenyl ethers, halogenated methacrylates, halogenated maleates, halogenated itaconates, and halogenated crotonates and one or more third units comprising a monomer containing both a free radically polymerizable group and cationic ring opening polymerizable group, is prepared by radical co-polymerization. The resulting linear plastic polymer group contains a UV, or e-beam curable ring opening polymerizable functional groups. Such plastic polymer is then blended with cationic photoiniator and processed into optical waveguide structures using a hot embossing technique.

Abstract: An active energy beam-curable adhesive composition is provided. The adhesive composition comprises (A), (B), and if required, (C) components. The component (A) is urethane (meth)acrylate derived from polyester polyol or polycarbonate polyol. The component (B) is a compound having at least one ethylenically unsaturated group together with at least one a cyclic imide group represented by the following general formula (1) .

Abstract: The invention relates to &agr;-ammonium alkenes, iminium alkenes and amidinium alkenes in the form of their tetraaryl- or triaryl-alkylborate salts that can be converted photochemically into amines, imines or amidines, and to a process for the preparation thereof. The invention relates also to compositions polymerisable or crosslinkable under basic conditions comprising such &agr;-ammonium alkenes, iminium alkenes or amidinium alkenes in the form of their tetra- or tri-arylalkylborate salts, to a method of carrying out photochemically induced, base-catalysed reactions, and to the use of such compounds as photoinitiators for base-catalysed reactions.

Abstract: A thermally-stable cationic photoinitiator capable of flash vaporization under vacuum and temperature conditions of an available flash-evaporation chamber is selected. The photoinitiator is mixed with a cation-polymerizable monomer and/or oligomer of interest and the mixture is flash evaporated and condensed in conventional manner as a film on a cold substrate. The resulting vacuum-deposited, homogeneous layer is cured with a high-energy radiation source that causes the cationic photoinitiator to liberate acidic species that catalyze the crosslinking of the monomer/oligomer compounds in its deposited film form. As a result of the homogeneous, pinhole-free nature of the vacuum deposition process, the thin-film polymer product does not suffer from the disadvantages attendant to prior-art atmospheric processes for cationically-cured polymers.

Abstract: Disclosed are thermally-stable, colored, photopolymerizable compounds containing a vinyl group which are capable of being copolymerized with reactive vinyl monomers to produce colored compositions such as polyacrylates, polymethacrylates, polystyrene, etc. The compounds exhibit good thermal stability, fastness (stability) to UV-light, good solubility in the reactive monomers and good color strength.

Abstract: Selectively colorable compositions and a method for forming selectively colored polymeric bodies using such compositions are disclosed. In accordance with the invention, a selectively colorable polymerizable composition comprising a leucobase color former is irradiated with light of a particular wavelength and specific intensity for a specified duration. Exposure to actinic radiation cures the composition and activates the color former. Exposure to higher dosages of actinic radiation can bleach the composition. The irradiation dosage can be varied to selectively color the polymeric body whereby the resultant color of any particular area depends on the exposure dose received at that location. By varying the dose, a polymeric body can be prepared having distinctly colored elements at specific locations.

Abstract: A photocurable resin composition capable of producing a three-dimensional object which has excellent dimensional accuracy with a small volume shrinkage factor and excellent heat resistance with a high heat distortion temperature as well as excellent transparency and mechanical properties. This composition comprises at least one imidated acrylic compound (i) represented by the following formula: wherein R1 is an alicyclic group, an aromatic group or an aliphatic group which may be substituted, R2 is a residual group of amino alcohol, R3 is hydrogen atom or methyl group, and n is 1 or 2; (ii) a radical polymerizable compound and/or a cationic polymerizable compound other than the above imidated acrylic compound; and (iii) a photopolymerization initiator. The weight ratio of the imidated acrylic compound to the radical polymerizable compound and/or cationic polymerizable compound is 80:20 to 10:90.

Abstract: An ink for ink-jet recording contains a coloring agent, a polymerizable oligomer, water, and a photopolymerization initiator having a solubility in water of 3 percent by weight or more. Another ink for ink-jet recording contains a coloring agent, a polymerizable oligomer having at least two acryloyl groups and a solubility in water of 10 percent by weight or more, a photopolymerization initiator, and water. The specified polymerizable oligomer or photopolymerization initiator reduces bleeding of the ink on recording media.

Abstract: Low viscosity, radiation curable fluid formulations that can be used advantageously as radiation curable, inks. The formulations are easily prepared for use in ink jet systems. The viscosity of the compositions is low enough so that conventional solvent is not required in order to satisfy the requisite low ink jet viscosity specifications. After curing, the compositions form durable, weatherable, abrasion resistant, printed images on a wide variety of porous and nonporous substrates. The formulations are very suitable for outdoor printing applications, especially for printing outdoor graphics onto a variety of surfaces, including vinyl or other polymer films commonly used for signage, retroreflective signage or other retroreflective items.

Abstract: The invention relates to a polymerizable, cross-linkable composition which contains: (A) 1-99.99 wt.-% of at least one conversion product of OH-functional (meth)acrylates with (i) oligomers from unsaturated rings or heterocyclic rings and maleic anhydride and/or with (ii) at least one ring-shaped polycarboxylic acid with at least 4 ring-carbon atoms and/or the anhydrides thereof with a saturated ring system, at least 4 carboxyl groups, and 0 or 1 heterocyclic ring atoms from the group N, O, S, whereby at least one carboxyl group and/or anhydride group of the above described substance groups is reacted with unsaturated polymerizable groups; (B) 0 to 98.99 wt.-% of one or more polymerizable, unsaturated organic compounds with at least one CH2═C(R10)—COO-group, whereby R10 represents H or methyl; (C) 0.01 to 5 wt.-% initiators and optional activators; (D) 0 to 90 wt.-% common solvents; (E) 10 to 90 wt.

Abstract: One embodiment of the present invention is a method for synthesizing superabsorbent polyacrylate polymers comprising the steps of providing an acrylate monomer, a multifunctional monomer, and free radical initiator in the absence of a solvent; mixing the acrylate monomer, multifunctional monomer, and free radical initiator to create a solvent free solution; and subjecting the solvent free solution to radiation to create a cross-linked polymer. The product created by this method is also a part of the present invention.

Abstract: Aliphatic maleimides and methods using the same are disclosed. Polymerization of compositions which include the compounds of the invention may be activated by irradiating the composition with radiation.

Abstract: A radiation-curable, optical fiber coating composition has enhanced color stabilization and is formulated from a composition containing at least one radiation-curable oligomer or monomer. A concentration of urethane and ether linkages in the radiation-curable composition is such that a cured optical fiber coating formed from said radiation-curable composition exhibits a &Dgr;E of about 40 or less after being exposed for 96 hours to 150° C. and then for 144 hours to 180° C. Also provided is a radiation-curable optical fiber coating composition which is substantially urethane-free.

Abstract: Free-flowing flakes of vinyl caprolactam monomer usable below its melting point of 34° C. without developing coloration.

Abstract: The invention provides an adhesive formulation for tacking and holding a nozzle plate in alignment on a semiconductor chip for an ink jet pen of an ink jet printer. The adhesive formulation includes a multifunctional epoxy material, a difunctional epoxy material, a fumed silica viscosity control agent, an imidazole-based thermal initiator and a mixed aryl sulfonium salt photoinitiator. Use of the adhesive formulation enables a nozzle plate to be assembled to a semiconductor chip with while substantially maintaining critical alignment between the nozzle plate and semiconductor chip.

Abstract: Enhancement of the rates of cationic polymerizations initiated by onium salts has been achieved through the use of oligomeric and polymeric electron-transfer photosensitizers derived from a polymerizable compound substituted with a polynuclear aromatic group, including epoxides, oxetanes, and ethylenically unsaturated compounds. The polymerizable compound is substituted with residues derived from anthracene, naphthalene, perylene, pyrene, fluorene, carbazole, indole, benzocarbazole, acridone, phenothiazine, and thianthrene, particularly carbazole.

Abstract: Aliphatic maleimides and methods using the same are disclosed. Polymerization of compositions which include the compounds of the invention may be activated by irradiating the composition with radiation.

Abstract: New imido(meth) acrylates of general formula (1), wherein R1, R2 and R3 may be the same or different and each represents H or CH3; R4 to R7 may be the same or different and each represents H or CmH2m+1 (in which m is 1 to 6); and n represents 1 to 4, and radiation-curable compositions prepared from them, easily cured by the irradiation with radiations, particularly ultraviolet rays, to form cured compositions excellent in weather resistance, abrasion resistance and adhesion to a base, and free from the problem of odor.

Abstract: A copolymer containing N-(halogenated phenyl) maleimide units or N-(halogenated phenyl) bismaleimide units and one or more second units selected from halogenated acrylates, halogenated styrenes, halogenated vinyl ether, halogenated olefins, halogenated vinyl isocyanates, halogenated N-vinyl amides, halogenated allyls, halogenated propenyl ethers, halogenated methacrylates, halogenated maleates, halogenated itaconates, and halogenated crotonates, is useful to form optical devices

Abstract: The present invention relates to a treating agent for liquid crystal alignment, which is an agent for liquid crystal alignment to be used for a method in which polarized ultraviolet rays or electron rays are irradiated on a polymer thin film formed on a substrate in a predetermined direction relative to the substrate plane, and said substrate is used for aligning liquid crystal without rubbing treatment, wherein said agent for liquid crystal alignment contains a polymer compound having photochemically reactive groups in the polymer main chain and a glass transition temperature of at least 200° C.

Abstract: The main aim of the present invention is a method of preparing photochromic or non-photochromic organic pieces of optical quality and especially organic lenses, by radical polymerisation of a mixture of radically polymerisable monomers, characterised in that it comprises: a) adjusting, by pre-polymerisation, the viscosity of said mixture, to a value between 0.4 and 2 Pa.s; b) pouring said pre-polymerised mixture into a mould; c) photogelifying, in said mould, said pre-polymerised mixture until its gel point; d) completing the polymerisation of said pre-polymerised and gelified mixture in said mould, by heat treatment; adding effective amounts of at least one thermal catalyst and of at least one photoinitiator intervening in said mixture of monomers for the implementation of said pre-polymerisation, photogelification and polymerisation; said photoinitiator(s) intervening in an amount less than or equal to 0.009 parts by weight per 100 parts by weight of said mixture of monomers.

Abstract: Disclosed are compounds of the formulas which are useful as monomers in photopolymerizable compositions. Also disclosed are methods of polymerizing these monomers, and polymers produced thereby.

Abstract: A monomer useful in the formulation of a radiation curable coatable composition comprises (a) polyfunctional isocyanurate having at least three terminal reactive groups reacted with (b) hydroxyalkyl acrylate and (c) tertiary amine alcohol in a molar ratio of a:b:c of about 1:1-2.5:0.5-2, wherein b+c is at least 3 and no greater than the total number of terminal reactive groups of (a). The monomer is included in a radiation curable coatable composition suitable for use as a floor finish and in a floor finishing system comprising the foregoing coatable composition with a primer. A method for the treatment of a substrate using the floor finish and the floor finishing system is also described.

Abstract: The present invention relates to urethane acrylates, which may be cured with high-energy radiation, in which the urethane acrylates are the reaction product of a) a polyisocyanate component containing 20 to 100 mole %, based on the moles of the polyisocyanate component a), of iminooxadiazine dione group-containing polyisocyanate trimers corresponding to formula A  wherein R1, R2and R3 are the same or different and represent linear or branched, C4-C20 (cyclo)alkyl groups and X is the same or different and represents isocyanate groups or isocyanate group-containing radicals that also contain iminooxadiazine dione, isocyanurate, uretdione, urethane, allophanate, biuret or oxadiazine trione groups, wherein R1, R2 and R3 are attached to a nitrogen atom, with b) an alcohol component containing at least one monobasic, hydroxy-functional, linear or branched C1-C12 alkyl ester of (meth)acrylic acid.

Abstract: A novel process for producing mouldings, especially contact lenses, is described, comprising the following steps: a) introducing into a mould a prepolymer containing photo crosslinkable groups that is liquid at room temperature or is readily meltable and is substantially free of solvents; b) initiating the photo cross-linking for a period of <20 minutes; c) opening the mould, so that the moulding can be removed for the mould. In accordance with the process according to the invention, it is possible especially to produce contact lenses having valuable properties.

Abstract: A fluorine-containing triallyl isocyanurate of the formula [I]: wherein at least one of X and Y is a fluorine atom, and the other is a hydrogen atom or a fluorine atom, exhibits good curing properties even when it is used as a crosslinking aid for elastomers which are required to have good heat resistance, such as in particular, fluororubbers, and provides cured materials having good mechanical properties and heat resistance.