Abstract: Controlled radical initiators, reaction mixtures containing the controlled radical initiators and various ethylenically unsaturated monomers, and polymeric materials formed from the reaction mixtures are provided. The controlled radical initiators are bis-dithiocarbamate or bis-dithiocarbonate compounds with a single carbon atom between the two dithiocarbamate or dithiocarbonate groups. Polymeric materials such as homopolymers, random copolymers, and block copolymers can be prepared using the controlled radical initiators.

Abstract: A radiation curable coating for a floor comprising: at least one radiation curable oligomer, at least one photoinitiator and at least one reactive diluent monomer, said radiation curable oligomer being selected from the group consisting of Urethane (meth)acrylates, epoxy (meth)acrylates, polyester (meth)acrylates, acrylic (meth)acrylates, and hydrocarbon (meth)acrylates is described and claimed. The composition is capable of undergoing photopolymerization when coated on a floor and when irradiated by a light emitting diode (LED) light, having a wavelength from about 100 nm to about 900 nm, to provide a cured coating on the floor, with the cured coating having an external surface, and the cured coating having a Percent Reacted Acrylate Unsaturation (% RAU) at the external surface of about 60% or greater. Also described and claimed are the process to coat a floor with the LED curable coating for floor and a coated floor where the coating has been cured by application of LED light.

Abstract: To provide a resin composition capable of forming a thin film layer so as to cause tenting over concave portions by conventional coating processes without depending on dry films, and also a coating method so as to cause tenting of the resin composition. A resin composition, which, by spin coating, causes tenting over concave portions formed on a substrate, the resin composition including a resin component (a) and a solvent (b) and has a viscosity of at least 200 cP, and tenting can be achieved by using the resin composition, allowing the resin composition to fall drop wise onto a substrate on which concave portions are formed, and spin coating the substrate at a rotating speed of 300 to 4000 rpm.

Abstract: A radiation-sensitive composition contains (A) a low-molecular-weight compound having one or more acid-dissociable groups which decompose by the action of an acid to enhance solubility in an alkaline developing solution and one or more radiation-sensitive acid-generating groups which generate an acid upon application of an active ray or radiation per molecule, and having a polystyrene-reduced number-average molecular weight (Mn) measured by gel permeation chromatography (GPC) of 500 to 4,000, and (B) a solvent.

Abstract: Provided are a phenoxy resin composition for transparent plastic substrate and a transparent plastic substrate using the phenoxy resin composition, capable of effectively substituting for a conventional glass substrate since having excellent thermal and chemical resistance, high adhesiveness, low water infiltration, and a small coefficient of linear thermal expansion. In one general aspect, there is provided a phenoxy resin composition for transparent plastic substrate, including: phenoxy resin having a chemical structure expressed as follows: wherein the n value is 35 to 400.

Abstract: There are provided a compound represented by the following formula (I), a photopolymerizable composition containing (A) a photopolymerization initiator represented by the formula (I) and (B) a radical polymerizable monomer, a color filter produced by using the photopolymerizable composition, and a process for producing the color filter.

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: An oxime ester compound of formula (I) useful as a photopolymerization initiator. A photopolymerization initiator having the oxime ester compound as an active ingredient is activated through efficient absorption of light of long wavelength, e.g., 405 nm or 365 nm, to exhibit high sensitivity. In formula (I), R1 and R2 are each R11, OR11, COR11, SR11, CONR12R13, or CN; R11, R12, and R13 are each hydrogen, a C1-C20 alkyl group, C6-C30 aryl group, a C7-C30 arylalkyl group, or a C2-C20 heterocyclic group; R3 and R4 are each R11, OR11, SR11, COR11, CONR12R13, NR12COR11, OCOR11, COOR11, SCOR11, OCSR11, COSR11, CSOR11, CN, halogen, or a hydroxyl group; a and b is each 0 to 4; X is oxygen, sulfur, selenium, CR31R32, CO, NR33, or PR34; and R31, R32, R33, and R34 each have the same meaning as R1.

Abstract: Disclosed is an adhesive composition including a compound having a multi-functional urethane (meth)acrylate group and an adhesive film prepared by using it. The adhesive composition includes compounds represented by Chemical Formulae 1 to 3. The compound represented by Chemical Formulae 1 to 3 includes an urethane (meth)acrylate group represented by the Chemical Formula 1-1 or 1-2.

Abstract: The invention provides an ink composition including a compound including a polymerizable unsaturated bond and a sulfide bond; and a radical polymerization initiator.

Abstract: A curable divinylarene dioxide resin composition including (a) at least one divinylarene dioxide, (b) at least one cationic photoinitiator, and (c) optionally, at least one pigment material; a process for making the curable divinylarene dioxide resin composition; and a cured divinylarene dioxide resin composition made therefrom. The cured product made from the above curable divinylarene dioxide resin composition offers improved properties and are useful for various applications including ink formulations.

Abstract: The invention provides a polymerizable composition including an oxime ester photopolymerization initiator, an organic acid anhydride having a molecular weight of 300 or less, and a polymerizable compound.

Abstract: Disclosed is a sealant composition for a liquid crystal display device, the sealant composition including a (meta) acrylate compound as expressed in Chemical Formula 1 below

Abstract: Disclosed is a sealant composition for liquid crystal display device, the sealant composition including a monomer as expressed in Chemical Formula 1 below wherein X is O, S, or NH, R1 is H or CH3, and R2 is an alkyl group or an aryl group of C2-30.

Abstract: An oxime ester compound of formula (I) useful as a photopolymerization initiator. A photopolymerization initiator having the oxime ester compound as an active ingredient is activated through efficient absorption of light of long wavelength, e.g., 405 nm or 365 nm, to exhibit high sensitivity. In formula (I), R1 and R2 are each R11, OR11, COR11, SR11, CONR12R13, or CN; R11, R12, and R13 are each hydrogen, a C1-C20 alkyl group, C6-C30 aryl group, a C7-C30 arylalkyl group, or a C2-C20 heterocyclic group; R3 and R4 are each R11, OR11, SR11, COR11, CONR12R13, NR12COR11, OCOR11, COOR11, SCOR11, OCSR11, COSR11, CSOR11, CN, halogen, or a hydroxyl group; a and b is each 0 to 4; X is oxygen, sulfur, selenium, CR31R32, CO, NR33, or PR34; and R31, R32, R33, and R34 each have the same meaning as R1.

Abstract: A photoinitiated cationically curable composition is provided, including at least one substantially saturated epoxy component comprising at least two glycidyl ether groups; at least one acrylonitrile/butadiene copolymer; and at least one cationic photoinitiator. The compositions exhibit excellent strength properties as well as reduced color formation upon curing, particularly after post-curing thermal treatments. Methods of bonding substrates with such compositions and articles prepared therefrom are also provided through the invention.

Abstract: To provide a resin composition capable of forming a thin film layer so as to cause tenting over concave portions by conventional coating processes without depending on dry films, and also a coating method so as to cause tenting of the resin composition. A resin composition, which, by spin coating, causes tenting over concave portions formed on a substrate, the resin composition including a resin component (a) and a solvent (b) and has a viscosity of at least 200 cP, and tenting can be achieved by using the resin composition, allowing the resin composition to fall drop wise onto a substrate on which concave portions are formed, and spin coating the substrate at a rotating speed of 300 to 4000 rpm.

Abstract: Compounds of the formula (I), L, L?, L?, L1, L?1, L?1, L2, L?2, L?2, L3, L?3, L?3, L4, L?4, L?4, L5, L?5, L?5, L6, L?6, L?6, L7, L?7, L?7, L8, L?8 and L?8 independently of one another are hydrogen or an organic substituent; and/or one or more of the pairs L3 and L5, L?3 and L?5 or L?3 and L?5 together denote a single bond, provided that the respective X, X? or X? is not a single bond; and/or L3 and L5, L?3 and L?5 or L?3 and L?5 together denote an organic linking group; and/or one or more of the pairs L1 and L3, L1 and L, L5 and L7, L?1 and L?3, L?1 and L?, L?5 and L?7, L?1 and L?3, L?1 and L?, or L?5 and L?7, together denote an organic linking group; provided that at least one of L, L?, L?, L1, L?1, L?1, L2, L?2, L?2, L3, L?3, L?3, L4, L?4, L?4, L5, L?5, L?5, L6, L?6, L?6, L7, L?7, L?7, L8, L?8 and L?8 is other than hydrogen; X, X? and X? independently of one another are a single bond, CRaRb O, S, NRc or NCORc; Ra, Rb and Rc independently of one another are hydrogen or an organic substituent; and Y is an ino

Abstract: The present invention relates to an ultraviolet curable resin of the present invention which is prepared from alkyl(meth)acrylates, glycidyl(meth)acrylate, and substituted or unsubstituted acrylic acid, wherein the resin contains terminal vinyl group in amount of at least 50 wt % based on the resin and its glass transition temperature (Tg) is in a range of from 40˜100° C. The present invention also relates to a resin composition containing the ultraviolet curable resin.

Abstract: A golf ball having at least a core and a cover, wherein at least a portion of the ball is formed from a material resulting from the isomerization of an amount of polybutadiene in solution to create a resulting polybutadiene having an increased content of trans-polybutadiene, is disclosed. Isomerization can be accomplished by mixing a photo-sensitizer into the polybutadiene solution and exposing the resulting mixture to a radiation source such as ultraviolet radiation. Isomerization can also be accomplished thermally by mixing nitrogen dioxide into a sufficiently heated solution of polybutadiene and maintaining the mixture at an elevated temperature for a sufficient period of time to increase the trans-polybutadiene content of the polymer. The resulting polybutadiene is recovered, mixed with other additives as desired and formed into one or more portions of a golf ball.

Abstract: The invention relates to a method for producing a sealed impregnation and/or release coating of flat joints, in particular of cylinder-head gaskets such as composite seals, metallic joints and multi-layered steel joints. The invention uses a silicone composition including at least a polyorganosiloxane A crosslinkable by a cationic and/or radical process by appropriate crosslinking functional groups, for example, of the alkenyl ether, acrylic, acrylate, epoxide and/or oxethane type; at least an initiator salt B selected among onium borates or an organometallic complex; and at least a reactive diluent C including a nonorganosilicon or organosilicon compound comprising in its structure at least a crosslinking functional group and optionally a secondary functional group different from the crosslinking functional group but capable of chemically reacting with a crosslinking functional group, for example of the hydroxyl, alkoxy and/or carboxyl type.

Abstract: The invention relates to thermoplastic polyolefin compositions having enhanced surface durability and products thereof which include a thermoplastic polyolefin base component at least one radiation-crosslinkable component present in an amount sufficient to enhance the surface durability of the thermoplastic polyolefin component when radiation-cured and at least one photoinitiator present in an amount sufficient to initiate crosslinking of the radiation-crosslinkable component upon exposure of the thermoplastic polyolefin composition to radiation.

Abstract: The invention relates to novel composite materials comprising (a) an inorganic or organic bulk material having covalently bound to its surface initiator moieties for radical polymerization; and (b) a hydrophilic surface coating obtainable by applying one or more different ethylenically unsaturated hydrophilic macromonomers of formula (1) as outlined in the claims to the bulk material surface provided with the initiator radicals and polymerizing said macromonomers. The composite materials of the invention have desirable characteristics regarding adherence to the substrate, durability, hydrophilicity, wettability, biocompatibility and permeability and are thus useful for the manufacture of biomedical articles such as ophthalmic devices.

Abstract: The invention relates to thermoplastic polyolefin compositions having enhanced surface durability and products thereof which include a thermoplastic polyolefin base component at least one radiation-crosslinkable component present in an amount sufficient to enhance the surface durability of the thermoplastic polyolefin component when radiation-cured and at least one photoinitiator present in an amount sufficient to initiate crosslinking of the radiation-crosslinkable component upon exposure of the thermoplastic polyolefin composition to radiation.

Abstract: The present invention is directed to new, energy-efficient photoinitiators in the form of organic sulfur-containing compounds. The present invention is also directed to a method of generating reactive species which includes exposing one or more photoinitiators to radiation to form one or more reactive species. Also described are methods of polymerizing unsaturated monomers, methods of curing an unsaturated oligomer/monomer mixture, and methods of laminating using the photoinitiators of the present invention.

Abstract: The present invention is directed to new, energy-efficient photoinitiators in the form of &agr;-amino enol ether compounds. The present invention is also directed to a method of generating reactive species, which includes exposing one or more photoinitiators to radiation to form one or more reactive species. Also described are methods of polymerizing unsaturated monomers, methods of curing an unsaturated oligomer/monomer mixture, and methods of laminating using the photoinitiators of the present invention.

Abstract: A method of generating reactive species which includes exposing a wavelength specific photoreactor composition to radiation, in which the wavelength specific photoreactor composition comprises one or more wavelength-specific sensitizers associated with one or more reactive species-generating photoinitiators. Also described are methods of polymerizing unsaturated monomers, methods of curing an unsaturated oligomer/monomer mixture, and methods of laminating.

Abstract: New betaketosulfonic derivatives, the process for their preparation, the photopolymerizable systems containing the same and their application as polymerization photoinitiators for inks, and particularly for inks having high content of pigments are described.

Abstract: This invention relates fluorinated polymers having high structural regularity, characterized by a high maximum operating temperature and by improved mechanical and processability properties, prepared by a (co)polymerization process of fluorinated olefinic monomers, optionally in association with non-fluorinated olefins, in aqueous emulsion, in the presence of radical photoinitiators and of ultraviolet-visible radiation.

Abstract: The present invention provides a curable composition which comprises (A) a base-generating substance which generates a base when exposed to the action of ultraviolet light, (B) a siloxane polymer which has silicon-hydrogen bonds (Si--H) capable of reacting with hydroxy groups under the effect of the base to form silicon-oxygen bonds (Si--O) and hydrogen molecules (H.sub.2), and (C) an acid substance. This composition is cured by irradiation with ultraviolet light. During this ultraviolet irradiation, a mask is placed between a coating film of the composition and the radiation source, and the uncured portions of the composition are dissolved and removed so that a pattern is formed. The residual portions are then heated to produce a pattern-cured product.

Abstract: Compounds of the formulaRG--A--INwherein IN is a photoinitiator basic structure A is a spacer group and RG is a functional reactive group can be employed as coreactive photoinitiators for photo-polymerization of systems containing ethylenically unsaturated compounds.

Abstract: n and m are independently of one another 0 or 1,R.sub.1, R.sub.2, R.sub.3, R.sub.4 and X are as defined in claim 1,are suitable as photoinitiators for the polymerization of ethylenically unsaturated compounds.

Abstract: Pressure sensitive adhesives that cure to a high cohesive strength at room and elevated temperatures, and a method for making such adhesives, are provided. The adhesives comprise an acrylic copolymer compounded with a pigment and a hydrogen-abstracting photoinitiator. A tackifier and/or multifunctional acrylate or methacrylate can also be added. The acrylic copolymer is prepared from a substantially acid-free monomer mixture of at least one alkyl acrylate and a tertiary amine-containing monomer, such as DMAPMA. Other monomers, including polar vinylic monomers and diesters of ethylenically unsaturated dicarboxylic acids are, preferably, also included. Despite the presence of titanium dioxide or other pigments, the compounded copolymers are UV-cured to a high cohesive strength through the combination of tertiary amine functional groups and hydrogen-abstracting photoinitiators, which form synergistic pairs when irradiated, leading to free radical formation and polymer cross-linking.

Abstract: Vinyl monomers are polymerized in the presence of bi(phosphine oxides) and bi(phosphine sulfides) which can function as photoinitiators and chain transfer agents in the polymerization of vinyl monomers. The incorporation of such organo-phosphorous compounds into such polymers either as an integral part thereof, or as an admixture, results in improved thermal stability of the polymers.

Abstract: The present invention provides a photo-setting conductive coating composition which is used as an antistatic material constituting articles wherein static electrification must be avoided, such as storage vessels for semi-conductor wafers, electronic/electric parts, floor/wall coverings for a production factory of semi-conductors, etc.The photo-setting conductive coating composition comprising 100 parts by weight of an antimony oxide-containing tin oxide powder (a) having a particle size of 0.01 to 0.4 .mu.m, 10 to 100 parts by weight of a (meth)acrylate compound (b) having at least two (meth)acryloyl groups in a molecule, 10 to 100 parts by weight of an acetal resin (c) having a residual hydroxyl group of 20 to 80 molar %, 0.1 to 10 parts by weight of a photopolymerization initiator (d) and 100 to 1000 parts by weight of an organic solvent (e).

Abstract: An epoxy resin composition contains an epoxy resin represented by the formula (I) and a curing accelerator: ##STR1## wherein R.sup.1 stands for ##STR2## where G stands for a glycidyl group, R.sup.2 stands for an alkyl group having 1 to 4 carbon atoms, R.sup.3 and R.sup.4 stand for the same or different groups and each denote a hydrogen atom or a glycidyl group, m and x each denote an integer of 0 to 10, n denotes an integer of 0 to 2, provided that m.gtoreq.x and, if m=0, then x=0, in which case at least one of R.sup.3 and R.sup.4 denotes a glycidyl group on the condition that when m.gtoreq.1 and m>x, R.sup.1 may each stand for different groups.

Abstract: Compounds of formula I ##STR1## wherein n is 0 or 1, p is a number from 1 to 8,q is 2 or 3, andR.sub.1 is unsubstituted phenyl or phenyl which is substituted by one to three halogen, C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.8 alkoxy, C.sub.2 -C.sub.8 alkoxyalkyl or/and C.sub.1 -C.sub.4 alkylthio, are suitable for use as initiators for photopolymerising compounds containing ethylenically unsaturated double bonds.

Abstract: An ultraviolet-hardenable adhesive for bonding a non-water swellable, ophthalmic-lens to a support member, in producing a non-water swellable ophthalmic lens, the adhesive containing at least one photopolymerizing monomer, and at least one photoinitiator, the at least one photopolymerizing monomer being selected from the group consisting of acrylates or methacrylates represented by following general formulas (I) and (II): ##STR1## wherein R.sub.1 is hydrogen or methyl,R.sub.2 is hydrogen or methyl,R.sub.3 is hydrogen or methyl,m is a positive integer from 2 to 20, andn is a positive integer from 1 to 5.A method of bonding a lens blank to a support member with an adhesive, and a processing of manufacturing a lens using an adhesive, are also disclosed.

Abstract: Compounds of the formula ##STR1## in which a is 1, 2, or 3, R.sup.1 is an uncharged, carbocyclic or heterocyclic aromatic ring, unsubstituted or substituted, R.sup.2 is an unsubstituted or substituted cyclopentadienyl or indenyl anion, and .vertline.X.vertline..sup.a- is an a-valent anion, are suitable for use as latent curing catalysts for two-component polyurethane coatings which are activated by irradiation with actinic light or by heating.

Abstract: A chloroprene polymer having dithiocarbamate groups at both terminals, represented by the following formula (I): ##STR1## wherein M.sub.1 is a chloroprene monomer residue; X is a group represented by the following formula (II): ##STR2## wherein R.sub.1 is a C.sub.1 -C.sub.8 alkyl group, R.sub.2 is a C.sub.1 -C.sub.8 alkyl group or a hydrogen atom, R.sub.1 and R.sub.2 may be the same or different, or R.sub.1 and R.sub.2 together form a C.sub.3 -C.sub.8 methylene group so that they form a cyclic group together with the adjacent nitrogen atom, or a group represented by the following formula (III): ##STR3## wherein R.sub.1 is a C.sub.1 -C.sub.8 alkyl group, and R.sub.2 is a C.sub.1 -C.sub.8 alkyl group or a hydrogen atom; and n is a natural number of from 10 to 5,000 when X is the group of the formula (II) or a natural number of form 5 to 100 when X is the group of the formula (III).

Abstract: Titanocenes containing .pi.-cyclopentadienyl ligands, in which one or two carbocyclic or heterocyclic aromatic rings are attached to the metal atom, said aromatic rings being substituted by fluorine in at least one of the two ortho-positions relative to the metal-carbon bonds, are suitable photoinitiators for the photopolymerization of ethylenically unsaturated substrates. They are distinguished by high sensitivity, stability to air and heat, and are very effective in the range from UV light to visible light.

Abstract: Substituted dibenzalketones useful as water-soluble photoinitiators have the formula: ##STR1## wherein R.sup.1 and R.sup.2 are 4, alkyl or, taken together, an aliphatic ring, n=0 or an integer and R.sup.3 and R.sup.4 either are both water-solubilizing groups (a) --X(CH.sub.2).sub.m N.sup.+ R.sup.5.sub.3, (b) --X(CH.sub.2).sub.m COO.sup.- M or (c) --X(CH.sub.2).sub.m SO.sup.-.sub.3 M.sub.5 or one is such a group and the other is (d) a group --NR.sup.5.sub.2, X is --CH.sub.2 --, --O-- or --S--, R.sup.5 is an alkyl group, M is H.sup.+ or a metal cation and m=0. Such a photoinitiator compound is associated with a polymerizable compound in an aqueous photopolymerizable composition.

Abstract: Novel xanthones and thioxanthones of the formula I ##STR1## in which A, X, Y, Z, E and E' are as defined in patent claim 1, are described. A is preferably --S-- and E and E' are preferably bonded in the ortho-position relative to one another. The compounds (I) are suitable, for example, as sensitizers for photocrosslinkable polymers or photocurable compositions, or for use in mixtures with polymers with H donor groups for image formation, in particular electrically conductive coatings and patterns, by means of electroless deposition of metals.