Abstract: The invention relates to a process for repairing coated substrate surfaces comprising the following successive steps: a) optionally preparing a blemished area to be repaired, b) providing a backing film coated on one side with an uncured or at least partially cured coating layer of a coating composition curable by means of high energy radiation, c) applying the backing film with its coated side onto the blemished area to be repaired, d) irradiating the coating applied in this manner onto the blemished area to be repaired with high energy radiation and e) removing the backing film, wherein the coating is irradiated through the backing film and/or after removing the backing film.

Abstract: Systems and methods are described for a chemical reaction synthesis of films, coatings or layers using surfactants. A method includes providing a surfactant as an impurity within at least one of a first precursor layer that is coupled to a first substrate and a second precursor layer that is coupled to a second substrate; forming a composition layer; and moving the first substrate relative to the second substrate, wherein the composition layer remains coupled to the second substrate. The first precursor layer includes a first chemical reactant, the second precursor layer includes a second chemical reactant, and the composition layer includes a chemical product yielded by a chemical reaction between the first chemical reactant and the second chemical reactant.

Abstract: A method for making a bicontinuous, conductive, pressure sensitive adhesive (PSA), such that the starting microemulsion has a convenient viscosity for coating, and such that only a single polmerization step is needed. This has been accomplished by the discovery of a class of thickening agents having a carboxylic acid functionality that are compatible with the microemulsion and yet do not damage the properties of the final adhesive.

Abstract: Crosslinked polyacrylates obtained by crosslinking, induced by means of UV radiation, of a polymer mixture comprising a) polyacrylate copolymers of the following monomers a1) acrylic acid and/or acrylic esters of the following formula CH2═CH(R1)(COOR2), where R1═H or CH3 and R2 is an alkyl chain having 1-20 carbon atoms, at 70-99% by weight, based on component (a), a2) olefinically unsaturated monomers containing functional groups, at 0-15% by weight, based on component (a), a3) tert-butyl acrylate, at 1-15% by weight, based on component (a), and b) a photocationic initiator at 0.01-25% by weight, based on the overall polymer mixture.

Abstract: A liquid compound or a compound solution is kept in contact with the surface of a solid material (synthetic resin, glass, metal, or ceramic), radiation selected from ultraviolet, visible, and infrared is irradiated on the interface between the surface of the solid material and the compound to optically excite the surface of the solid material and the compound, thereby effecting substitution with a chemical species in the compound, depositing or performing etching with the chemical species. Preferably, a transparent window is kept in tight contact with the surface of a solid material to be treated, a thin layer of the liquid compound or the compound solution is interposed between the surface of the solid material and the transparent window by using capillarity, and ultraviolet, visible, or infrared is irradiated through the window. With this treatment, the irradiated portion can be given hydrophilicity, adhesion properties, printing properties, corrosion resistance, and conductivity.

Abstract: There are disclosed a releasing sheet which comprises a sheet like substrate and a cured layer placed thereon of an addition reaction type silicone composition containing a photosensitizer, characterized in that the cured layer is formed by heat treating a layer of an addition reaction type silicone composition containing at least one photosensitizer selected from the group consisting of &agr;-hydroxy ketones (e.g. 2-hydroxy-2-methyl-1-phenylpropane-1-one, 1-[4-(2-hydroxyethoxy)-phenyl]-2-hydroxy-2-methylpropane-1-one and 1-hydroxycyclohexy-phenyl-ketone) and &agr;-diketone dialkyl acetals (e.g. benzyldimethyl acetal), followed by treatment with ultraviolet ray irradiation; and a process for efficiently producing the releasing sheet in extremely high productivity. The layer of an addition reaction type silicone composition has favorable adhesiveness to the substrate and non-migration property, and thus the objective releasing sheet has excellent releasability and exceptionally high flatness.

Abstract: A process for irradiating material in web form by means of electron beams and/or UV rays, wherein the material is applied to a transport means, the material on the transport means is guided through a first irradiation in which the material is irradiated on the open side, the material is transferred from the transport means to a substrate, and the material on the substrate is guided through a second irradiation in which the material is irradiated on the second, hitherto unirradiated, open side.

Abstract: A novel crosslinkable ambifunctional perfluorinated polyetheris provided wherein the polyether is defined by the formula X1—(CaF2aO)n—X2 where X1 and X2 are different functional terminal groups which are capable of forming a crosslinked perfluorinated polyether by addition, condensation or ring-opening reaction, and n ranges from 1 to 2000 and a is an integer of from 1 to 4. The mole ratio of X1 and X2 is 1:1. A release film may be formed from the cross-linked perfluorinated polyether.

Abstract: This invention relates to polymeric compositions that are processible and may be photochemically cured to produce crosslinked compositions useful in coating, sealants and adhesive applications. The crosslinkable composition comprises a first component having a plurality of pendent, free-radically polymerizable functional groups; a polymeric photoinitiator, and a residual content of less than 2%. The composition is melt processable at temperatures of less than or equal to 100° C.

Abstract: The present invention provides a release material formed by irradiating a release material precursor having a shear storage modulus of about 1×102 to about 3×106 Pa at 20° C. and a frequency of 1 Hz, wherein the release material has a contact angle of 15° or more, measured using a mixed solution of methanol and water (volume ratio: 90/10) having a wet tension of 25.4 mN/m. The release material of the present invention has improved anchoring to certain substrates, ensuring relatively low release strength from certain pressure-sensitive adhesives, particularly even after the exposure to a high temperature. Thus, the release materials are capable of allowing the pressure-sensitive adhesive to maintain stable residual adhesion strength.

Abstract: A method of producing a coating of solvent-free pressure-sensitive adhesive systems on substrates, especially release-coated substrates, in which a fluid film is applied to a rotating roller by means of a fluid applicator, the pressure-sensitive adhesive system is applied in one or more layers to the fluid film by means of an adhesive applicator, and the roller is contacted with the substrate, so that the pressure-sensitive adhesive system is transferred from the roller to the substrate.

Abstract: Non-tacky, base polymers are plasticized into pressure-sensitive adhesives and comprise: a) about 100 parts by weight of a base copolymer having a Tg greater than about 0° C., wherein the base copolymer is formed from and comprises: (1) about 50 to 70% by weight of a high Tg comonomer component, wherein the homopolymer formed from the high Tg comonomer component has a Tg of at least about 20° C.; (2) optionally, up to about 20% by weight based on the total weight of the base copolymer of an acidic comonomer; and (3) about 30 to 50% by weight of one or more low Tg (meth)acrylate comonomer, wherein the Tg homopolymer of the low Tg comonomer is less than about 20° C., and b) about 1 to about 100 parts based on the base copolymer of a nonreactive, non-volatile, non-acrylic-based plasticizing agent.

Abstract: A pourable liquid composition comprising water, a water soluble or water swellable organic polymer, comprising 25 to 90 mole % monomer or monomers selected from the group consisting of C8-C30 alkyl ethoxylated (meth)acrylates, C8-C30 alkyl ethoxylated (meth)acrylamides, C8-C30 alkyl (meth)allyl ethers and C8-C30 alkyl ethoxylated (meth)allyl ethers, an organic water miscible liquid selected from the group consisting of C1-5 alcohols, C3-5 ketones, C2-5 esters and C2-5 ethers, characterized in that the organic polymer is present as discrete particles of average diameter size of below 10 microns. A process of imparting water resistance to the components of a cable said process by first contacting one or more of said components of a cable with said pourable liquid composition, and then assembling the components to form the cable. The composition is particularly suitable for protecting optical fibers within a fiber optic cable against the ingress of water.

Abstract: A single component liquid heat-curable adhesive formulation that is stable at room temperature. The formulation includes from about 5 to about 70 wt % of at least one acrylate monomer, from about 5 to about 94 wt % of an acrylate oligomer, and from about 0.1 to about 10 wt % of a thermal initiator selected from the group consisting of diacyl peroxides, benzoyl peroxides and peroxy esters. A photo initiator may be included thereby rendering the stable liquid formulation to be both heat-curable and UV-curable.

Abstract: An adhesive composition that includes a mixture of a cationically polymerizable component, an acidic component, and an initiator is provided. Preferably, the initiator comprises an iodonium salt, a visible light sensitizer, and an electron donor compound, wherein the initiator has a photoinduced potential greater than or equal to that of N,N-dimethylaniline in a standard solution of 2.9×10−5 moles/g diphenyl iodonium hexafluoroantimonate and 1.5×10−5 moles/g camphorquinone in 2-butanone. This adhesive composition is cationically polymerizable and is able to bond to hard tissue and cationic restorative materials upon curing.

Abstract: A photo-curable resin composition for sealing material, which is superior in the photo-curing performance and in the prompt curing property and is better in the adhesive property, in the resistance to moisture permeation and in the heat resistance, the photo-curable resin composition comprising (A) a compound having oxetane ring, (B) a photoinitiator for cationic polymerization and (C) a silane coupling agent, wherein the composition has a viscosity in the range from 0.01 to 300 Pa.s at 25° C.

Abstract: A radiation-curable release composition comprises: (a) from about 50 to about 100 parts by weight of an organopolysiloxane of the formula (I)  wherein R is CH2═CH—C(O)—O—CH2—CH(OH)—CH2—O—CH2—CH2—CH2—, n is 5 to 15, and p is 50 to 150; (b) from 0 to about 50 parts by weight of one or more organopolysiloxanes comprising organopolysiloxanes selected from the group consisting of those of formulae (II) and (III)  wherein R is CH2═CH—C(O)—O—CH2—CH(OH)—CH2—O—CH2—CH2—CH2—, m is 1 to 10, and q is 151 to 300; and  wherein R is CH2═CH—C(O)—O—CH2—CH(OH)—CH2—O—CH2—CH2—CH2—, and r is 20 to 500; (c) from 0 to about 10 parts by weight of an organopolysiloxane of formula (IV)  wherein R is CH2═CH—C(O)—O—CH2—CH(OH

Abstract: A versatile method for the manufacturing of image transfer sheets which provide users with cold transferring images without using supplemental heat in the course of image transfer to a wide variety of substrates includes printing an image with water-based ink onto an image transfer sheet that has a coating of water-accepting adhesive. A method of manufacturing image transfer sheets includes first applying a water impermeable layer onto a flexible substrate. A layer of water-activatable adhesive is applied upon the water impermeable layer. The adhesive is then dried in a dryer with dehumidified air. A water permeable detack layer is then applied upon the layer of adhesive. In a particular embodiment, the sheet further includes a water-accepting image holding layer in between the water-accepting adhesive layer and the water impermeable layer. The image holding layer becomes water-resisting when heated to within a range of activation temperatures.

Abstract: A process for removing contaminants from the surface of a substrate comprises contacting the substrate with a cleaning composition comprising at least one mono-, di-, or trialkoxy-substituted perfluoroalkane, perfluorocycloalkane, perfluorocycloalkyl-containing perfluoroalkane, or perfluorocycloalkylene-containing perfluoroalkane compound, the compound optionally containing additional catenary heteroatoms. The compounds exhibit good solvency properties while being environmentally acceptable.

Abstract: This invention is directed to a method for forming an inked image on game balls, golf balls, and the like, through the use of novel curable inks that are low energy curable and require minimal curing through multiple source radiation curing processes, such as UV radiation, visible radiation, and electron beam radiation. Production inks, logo inks, and methods for forming production prints and logos on golf balls, game balls, and the like are disclosed.

Abstract: A single component liquid heat-curable adhesive formulation that is stable at room temperature. The formulation includes from about 5 to about 70 wt % of at least one acrylate monomer, from about 5 to about 94 wt % of an acrylate oligomer, and from about 0.1 to about 10 wt % of a thermal initiator selected from the group consisting of diacyl peroxides, benzoyl peroxides and peroxy esters. A photo initiator may be included thereby rendering the stable liquid formulation to be both heat-curable and UV-curable.

Abstract: Process for the radiation crosslinking of double-sided adhesive tapes, in which a backing material coated on both sides with adhesives is irradiated asymmetrically from both sides with different doses in an irradiation means.

Abstract: A method of producing a coating of solvent-free pressure-sensitive adhesive systems on substrates, especially release-coated substrates, in which the pressure-sensitive adhesive system is applied in one or more layers to a rotating roller by means of an adhesive applicator, the pressure-sensitive adhesive system on the roller is crosslinked in an irradiating means by means of high-energy radiation, and the roller is contacted with the substrate, so that the pressure-sensitive adhesive system is transferred from the roller to the substrate.

Abstract: Methods, systems, and compositions that make it possible to form high resolution, pressure sensitive adhesive patterns or films on a wide range of substrates. The compositions generally incorporate a curable, fluid composition (i.e., pressure sensitive adhesive precursor). When cured, a pressure sensitive adhesive is formed. Ink jet printing and subsequent curing allows pressure sensitive adhesive features to be formed with high resolution and tremendous flexibility in the patterns by which adhesive features may be formed. Preferred embodiments of the invention incorporate rheology modifying agents that can be used to promote favorable dot gain and other printing characteristics, the ability to build print thickness, and mechanical properties of resultant cured adhesives.

Abstract: Printable sheets such as business forms and adhesive play mats having removable labels integrated therein are produced by applying pressure-sensitive adhesive directly to the base sheet of the printable sheet without a paper backing and encapsulating the adhesive with a solid silicone layer. The base sheet is die cut or perforated in regions where the adhesive is applied to define removable labels.

Abstract: An optical fiber array (20,40) comprising at least one subunit (26,46) including at least one optical fiber (22) therein surrounded by a respective subunit matrix (23,43) having a subunit matrix modulus characteristic. The optical fiber array (20,40) includes a common matrix (24,44) disposed adjacent to the at least one subunit (26,46) and having a common matrix modulus characteristic. A subunit/common matrix modulus ratio being defined as a ratio of the subunit matrix modulus characteristic with respect to the common matrix modulus characteristic, the subunit/common matrix modulus ratio being greater than about 1.5:1. The optical fiber array (20,40) can include an adhesion zone (28,48) defining a controlled adhesion bond between the common and subunit matrices (24,26;44,46).

Abstract: The present invention relates to an acrylic pressure-sensitive adhesive double coated tape or sheet, an acrylic non-substrate pressure-sensitive adhesive transfer tape or sheet, and a method for manufacturing the same. The acrylic pressure-sensitive adhesive double coated tape or sheet and the acrylic non-substrate pressure-sensitive adhesive transfer tape or sheet are manufactured by the use of a light-cured adhesive whose main components are a (metha)alkyl ester acrylate monomer, a polar functional group containing monomer, an acrylic polymer having a photo-active functional group, and photopolymerization initiating agent, wherein the acrylic polymer having a photo-active functional group has a weight average molecular weight of 200,000 to 3,000,000 and the content of the photo-active functional group of 0.001 milli-equivalent/g to 0.5 milli-equivalent/g.

Abstract: Solvent-free and water-free radiation-curable primers based on hydroxy-functional prepolymers and cycloaliphatic epoxides or based on hydroxy-functional prepolymers and olefinically unsaturated compounds or based on epoxides and vinyl ethers together with cationic or free-radical initiators may be applied in the same manner as conventional commercial solvent-free laminating adhesives and, for many coatings, allow subsequent in-line coating without there being any need to evaporate solvent or water from the primer coating.

Abstract: Release liners and processes for making the same are disclosed. The release liners include no more than about 1.5 micrograms/square centimeter of nonreacted silicone materials (extractables). The release liners are prepared using solvent coating of radiation curable silicone release materials.

Abstract: A method of increasing the adhesion of a photopolymerizable composition and the photopolymerized composition formed therefrom, which method comprises the step of adding an adhesion promoter, which consists essentially of a polycarboxylic acid having three to six carbon atoms, to the photopolymerizable composition.

Abstract: A composition comprises a polyacrylate for processing from the melt and a stabilizer having at least one phosphite group.

Abstract: The present invention provides pure, storage stable, reactive esters of 2-cyanopenta-2,4-dienoic acid and the adhesives and polymers thereof. The monomers of the present invention have the formula: where R is alkyl, alkenyl, alkynyl, alkoxyalkyl, alkenyloxyalkyl, alkynyloxyalkyl, poly(oxyalkyl), aryl, cycloalkyl or a heterocyclyc radical. R may also be one of the foregoing moieties substituted with one or more of the other moieties; this includes the case of the substituent itself being substituted, and may also contain halogens. The reactive monomers of the present invention can be formulated into adhesives by incorporating certain modifiers and additives such as polymeric thickeners, viscocity regulators, plasticizers, thixotrophic agents, compatibilizers, adhesion promoters, pigments and colorants, fillers, deodorants and perfumes. They can also be used in composition with other monomers containing a reactive double bond such as for example cyanoacrylates.

Abstract: A radiation curable resin composition capable of producing molded articles which have excellent transparency, small light-coloring resistance, high dimensional accuracy, high surface hardness, and high thermal resistance.

Abstract: Process for producing adhesive tapes in which adhesive tapes coated on one side with an adhesive composition are subjected to radiation crosslinking, the irradiation of the adhesive tape taking place through the backing material of the adhesive tape onto the adhesive composition in such a way that the backing material and that side of the adhesive composition facing the backing material receive a dose of from 30 to 200 kGy, in particular 100 kGy, and the acceleration voltage during the irradiation being chosen such that the dose on the open side of the adhesive composition has fallen from 0 to 60 kGy, in particular from 10 to 20 kGy.

Abstract: This invention provides radiation-curing coating compositions comprising a mixture of organopolysiloxanes modified laterally and terminally with acrylic groups, which exhibit markedly improved adhesion to a variety of substrates following curing and for which there is little or no change in the adhesiveness on storage for prolonged periods.

Abstract: Radiation-curable compositions, having high elongation at break and toughness after cure can include the following pre-mixture components: a) a polymer, oligomer or monomer having at least one (meth)acrylate functional group; b) an oligomer or monomer, exclusive of (meth)acrylate functional groups, having an ethylenically unsaturated functional group; and c) an elongation promoter; wherein the composition, after radiation-cure, has an elongation at break of at least about 200%. Glass substrates and optical fibers are coated with the radiation-curable composition. Monofilament fiber or a plurality of fiber filaments, such as sewing thread, are coated with the radiation-curable binder composition, which after cure, demonstrates high elongation at break.

Abstract: A description is given of a method of crosslinking radiation-crosslinkable pressure-sensitive adhesive films by controlled-dose exposure to actinic radiation, which involves exposing the film surface to a regular or irregular radiation pattern made up of regions of different intensity. The method permits a more precise adjustment of the adhesion—in particular, the adhesion of flexible films on a substrate.

Abstract: Production of a dielectric coating on a substrate whereby a poly(arylene ethers) or fluorinated poly(arylene ethers) layer is cured by exposure to electron beam radiation. A wide area electron beam is used which causes chemical reactions to occur in the polymer structure which are thought to cause crosslinks between polymer chains. The crosslinks lead to higher mechanical strength and higher glass transition temperature, lower thermal expansion coefficient, greater thermal-chemical stability and greater resistance to aggressive organic solvents. The polymer layer may also be optionally heated, thermally annealed, and/or exposed to UV actinic light.

Abstract: A curing process for cationically polymerisable monomers, which comprises applying a composition comprising: (a) at least one cationically polymerisable monomer, (b) as photoinitiator at least one iodonium salt containing an SbF6, PF6 or BF4 anion, (c) one pigment, and (d) at least one sensitiser, to a substrate, irradiating it with light having a wavelength of 200-600 nm and then heat-postcuring it, is distinguished by little yellowing of the cured formulation.

Abstract: The invention relates to a process for applying coating films to three-dimensionally curved substrates, and to a process for producing coating films. In order to apply the coating film, which has at least a coating layer and an adhesive layer, the radiation-curable coating layer of the coating film is partially cured so as to be free from tack before being applied to the substrate. Following application, the coating film is subjected to electromagnetic radiation at below the wavelength of the visible spectrum and is fully cured. To produce a coating film, the coating layer is partially cured so as to be free from tack and in this state is stored until it is applied to a substrate. The coating layer can be attached at least indirectly to a smooth support base in conjunction with an adhesive layer. The coating layer and/or the coating film can be detached from a roller in applying the coating film to a substrate.

Abstract: To provide liquid composition that allows efficient production of easy detachable adhesive solid, and adhesive products which are produced using said composition, wherein said products can be used repeating attaching and detaching and restore adhesiveness by washing when the adhesiveness was lowered. The liquid composition is cured by exposure to UV light to give easy detachable adhesive solid. For example, liquid composition containing oligourethane diacrylate 35.0 wt %, [Compound 2] 59.0 wt %, acetophenone-derived photo-initiator  5.0 wt %, and additives  1.0 wt % is screen-printed in a film with a thickness of 15 &mgr; m on 50% area.

Abstract: Adhesive coating film consisting of a) a radiation-cured coat which comprises from 40 to 90% by weight, preferably from 50 to 60% by weight, of urethane acrylate, from 0 to 20% by weight, preferably from 10 to 15% by weight, of polyether acrylate, from 10 to 50% by weight, preferably from 25 to 40% by weight, of reactive diluent, from 0 to 30% by weight of pigments from 0 to 10% by weight, preferably from 2 to 5% by weight, of a carboxy-functional (meth)acrylic esther [sic], from 0 to 10% by weight of other customary coatings fillers, and in the case of curing with UV radiation, from 0 to 10% by weight, preferably from 3 to 6% by weight, of photoinitiator, and b) which carries on one side an adhesive composition which has free NCO groups in the freshly applied adhesive composition, can be plastified thermally, especially under the intended processing conditions, and has a markedly weak surface tack.

Abstract: Single-solution adhesive resin formulations are made of predominantly dimethacrylates or diacrylates containing predominantly) two carboxyl groups and a functionalized methacrylate or acrylate diluent monomer. A novel light-activated initiator can be used for photopolymerization of such adhesives.

Abstract: Disclosed is an organic thin film EL device which has: a transparent insulative substrate and a sealing cap which are bonded together by an ultraviolet-activated adhesive; wherein the ultraviolet-activated adhesive is composed of a combination of adhesives with different hardening conditions to the irradiation of ultraviolet rays.

Abstract: Cure-on-demand, moisture-curable compositions of one or more compounds comprising molecules having reactive silane functional groups and an acid generating material are taught herein. The acid generating material releases an acid upon exposure to heat, ultraviolet light, visible light, electron beam irradiation or microwave irradiation to initiate and accelerate the crosslinking reaction. Articles prepared using the moisture curable materials are also disclosed, as are methods of curing those materials.

Abstract: A cutable topcoat composition and apparatus useful for preparing stable data carrying devices, such as multi-layered laminates, and methods for preparing and using the composition. The composition includes a polymerizable composition and a polymeric binder. The polymerizable composition includes hard and flexible polymerizable subunits in a ratio that optimizes flexibility while retaining good adhesion and plasticizer resistance. In a preferred embodiment, a polymerization initiator is also included in the composition. Optionally, a chain transfer agent may also be added to the composition. The composition is substantially plasticizer free. The methods of using the composition include incorporating the composition into a topcoat film useful for storing the topcoat composition prior to use in preparing data-carrying devices, such as cards.

Abstract: There are described novel adhesives, which are capable of being “switched” form a tack to a non-tacky state. Such switchable adhesives are especially advantageous when used in medical dressings, and therefore, novel medical dressings comprising a switchable adhesive layer, a removable light occlusive layer and an intermediate transparent or translucent layer are also described.

Abstract: A method is disclosed for preparing an electronic assembly using a reworkable underfill encapsulant in which the encapsulant is cured in situ from a curable composition comprising one or more mono-functional maleimide compounds, or one or more mono-functional vinyl compounds other than maleimide compounds, or a combination of maleimide and vinyl compounds, a curing initiator and optionally, one or more fillers or adhesion promoters.

Abstract: A liquid curable resin composition exhibiting superior storing stability and suitable for use as a material for optical fiber ribbon matrix, a bundling material, and a material for up-jacketing fibers. The composition contains a first polydimethylsiloxane compound which contains (i) at least two urethane bonds, (ii) an unreactive organic group attached to at least one end of the first polydimethyl-siloxane, and (iii) a (meth)acrylol group attached to at least one end of the first polydimethylsiloxane, and a second polydimethylsiloxane compound which contains (i) at least two urethane bonds and (ii) an unreactive organic group attached to at least one end of the second polydimethylsiloxane, and optionally a third polysiloxane compound which does not contain urethane bonds.

Abstract: The present invention provides a number of interrelated methods for the production of random and ordered arrays of particles and recesses as well as films containing such arrays and recesses. The present invention also relates to the random and ordered arrays of particles and films prepared therefrom. The ordered arrays are obtained by the use of ferrofluid compositions which may be curable, solidifiable on non-curing/non-solidifiable. The arrays and films may contain electrically-conductive particles useful in electronic applications for effecting contact between leads or pads.