Abstract: Ultraviolet (UV)-curable polyurethane compositions are provided which are made by reacting an isocyanate with an ultraviolet (UV)-curable polyol that is made by co-polymerizing an alkylene oxide, an unsaturated carboxylic acid or anhydride and a hydroxy functional compound and which has an ultra-low level of unsaturation. The inventive ultraviolet (UV)-curable polyurethane compositions may find use in or as coatings, adhesives, sealants, elastomers and the like.

Abstract: A method for producing a solvent resistant, low-extractable, film from an actinic radiation curable homogenous aqueous composition containing a water soluble compound, having at least one alpha, beta-ethylenically unsaturated radiation polymerizable double bond, and water as essential components.

Abstract: An ocular lens material comprising a copolymer prepared by polymerization with heating of a monomer mixture and/or with irradiating a monomer mixture with ultraviolet ray by means of a molding method, the monomer mixture containing a polysiloxane macromonomer A, a Si-containing alkyl methacrylate B, a hydrophilic monomer C comprising NVP as C-1 and another hydrophilic monomer C-2, another monomer D and a crosslinkable monomer E comprising a crosslinkable monomer E-1 containing at least one group selected from acryloyl group, vinyl group and allyl group, and methacryloyl group, and a crosslinkable monomer E-2 containing at least two methacryloyl groups as main components, wherein (A+B)/C (weight ratio) is 30/70 to 70/30, A/B is 25/75 to 75/25, C-1/C-2 is 50/50 to 100/0, the amount of D is 0 to 20% by weight in the monomer mixture, which has high oxygen permeability, high mechanical strength, excellent surface wettability and low surface frictional property.

Abstract: An electron-beam curable polyurethane resin for magnetic recording media is produced by modifying a polyurethane resin having active hydrogen in the molecule thereof with a compound having at least two acrylic double bonds, wherein the modification is performed on the active hydrogen so that the polyurethane resin becomes electron-beam curable. By subjecting a known thermosetting polyurethane resin to electron-beam sensitive modification, the resulting resin is highly crosslinked and is thus capable of being suitably used for magnetic recording media. Also, an electron-beam curable polyurethane resin having excellent crosslinking characteristics can easily be produced from the known thermosetting polyurethane resin. Furthermore, by using the electron-beam curable polyurethane resin, a high-performance magnetic recording medium can be provided.

Abstract: A polyamphoteric superabsorbent copolymer made up of polymerizerable acid monomer and of polymerizable base monomer and optionally a supplemental monomer. In particular, the invention includes a radiation curable coating composition that comprises from about 20 weight % to about 80 weight % of polymerizerable acid monomer and from about 20 weight % to about 80 weight of polymerizable base monomer; and from 0 weight % to about 50 weight % of supplemental monomer. On exposure to radiation the coating composition forms a polyamphoteric superabsorbent copolymer. The radiation curable coating composition may be used with suitable substrates.

Abstract: Aqueous dispersions curable thermally and with actinic radiation, comprising (I) liquid, and/or highly viscous solid particles dimensionally stable under storage and application conditions, comprising (IA) a binder free of carbon-carbon double bonds activatable with actinic radiation, comprising at least one (meth)acrylate copolymer containing on average per molecule at least one isocyanate-reactive functional group and at least one dispersive functional group, and (IB) at least one blocked polyisocyanate; (II) liquid, highly viscous and/or solid particles dimensionally stable under storage and application conditions, comprising at least one polyurethane (II) containing at least one isocyanate-reactive functional group, at least one functional group having at least one bond activatable with actinic radiation, and at least one dispersive functional group, and (III) at least one unsaturated constituent which is free of isocyanate-reactive functional groups and contains on average per molecule more than on

Abstract: A non-aqueous, solvent-free formulation for producing clear, transparent, heat-resistant elements, suitable for use as lenses in optoelectronic devices, consists essentially of an acidic, nonpolymerizing acrylic resin; THFA, DMA, HEMA, HBA, or an equivalent polymerizable diluent in which the acrylic resin is dissolved; and a free-radical photoinitiator.

Abstract: An electron beam curing resin for a magnetic recording medium is provided, wherein a known thermosetting vinyl chloride resin or polyurethane resin is modified to become sensitive to an electron beam, and the resulting resin has a high cross-linking property. A method for readily manufacturing the above-described electron beam curing resin from a known thermosetting resin is provided. Furthermore, a high-performance magnetic recording medium including the above-described electron beam curing resin is provided. The electron beam curing resin is produced through a reaction between active hydrogen groups of a vinyl chloride resin or polyurethane resin having the active hydrogen groups in a molecule and a compound having an isocyanate group and a radical-polymerizing unsaturated double bond in a molecule, wherein the amount of water in the reaction system is controlled at 0.05 to 0.5 percent by mass relative to the resin when the reaction is effected.

Abstract: The present invention provides a radiation-curable prepolymer. The radiation-curable prepolymer of the invention is prepared by reacting an isocyanate-capped polyurethane with an ethylenically unsaturated amine or an ethylenically unsaturated monohydroxy compound or a mixture thereof, wherein the isocyanate-capped polyurethane is a copolymerization production of: (a) at least one polyalkylene glycol; (b) at least one branching agent having at least three hydroxy groups; and (c) at least one di- or polyisocyanate. The radiation-curable prepolymer of the invention can find use in economically producing contact lenses which have durable, highly elastic soft contact lenses with desired physical properties. In addition, the present invention provides method for making a radiation-curable prepolymer of the invention and for making a medical device, preferably an ophthalmic device, more preferably a contact lens.

Abstract: Aqueous coating compositions based on polyurethane dispersions which cure under the influence of high-energy radiation, to a process for preparing them and to their use. The coating compositions contain a polyisocyanate, a polyurethane containing free-radically polymerizable groups, and an initiator which is capable of initiating a free-radical polymerization.

Abstract: A coating material curable thermally and with actinic radiation, comprising at least one constituent (a1) containing at least two functional groups (a11) which serve for crosslinking with actinic radiation, and if desired at least one functional group (a12) which is able to undergo thermal crosslinking reactions with a complementary functional group (a22) in the constituent (a2), and at least one constituent (a2) containing at least two functional groups (a21) which serve for crosslinking with actinic radiation, and at least one functional group (a22) which is able to undergo thermal crosslinking reactions with a complementary functional group (a12) in the constituent (a1), and also, if desired, comprising at least one photoinitiator (a3), at least one thermal crosslinking initiator (a4), at least one reactive diluent curable thermally and/or with actinic radiation (a5), at least one coatings additive (a6), and/or at least one thermally curable constituent (a7), with the proviso that the coating material cont

Abstract: A surface treatment composition of the present invention comprises (A) urethaneacrylate oligomer, (B) acrylate based monomer, (C) photoinitiator, (D) silicon additive, and (E) silica matting agent. The present invention provides a surface treatment composition in which imparts abrasion and scratch resistance to the surface of a soft type urethaneacrylate oligomer decorative floor covering, and ameliorates the problem of low stain resistance caused a low density of elaborate crosslinks by using a small amount of single functional group monomer. The present invention also provides a surface treatment composition in which employs only hard type urethaneacrylate without single functional group monomer so that cross linking density is increased and the effects of oxygen that prohibits the surface curing are minimized, resulting in improved stain resistance.

Abstract: A radiation-curable polyurethane is obtained from the reaction of a low free diisocyanate polyurethane prepolymer and an acrylic monomer.

Abstract: A surface treatment composition of the present invention comprises (A) urethaneacrylate oligomer, (B) asrylate based monomer, (C) photoinitiator, (D) silicon additive, and (E) silica matting agent. The present invention provides a surface treatment composition in which imparts abrasion and scratch resistance to the surface of a soft type urethaneacrylate oligomer decorative floor covering, and ameliorates the problem of low stain resistance caused a low density of elaborate crosslinks by using a small amount of single functional group monomer. The present invention also provides a surface treatment composition in which employs only hard type urethaneacrylate without single functional group monomer so that cross linking density is increased and the effects of oxygen that prohibits the surface curing are minimized, resulting in improved stain resistance.

Abstract: An energy-ray curing resin composition comprising a photopolymerizable resin component which can be cured by irradiation with an energy ray, a photopolymerization initiator component which makes it possible to cure the above photopolymerizable resin component by irradiation with an energy ray and a curing agent component used for curing at least one of the above photopolymerizable resin components by a method other than irradiation with an energy ray. To provide a high curability energy-ray curing resin composition which has a very high curing capacity as compared with those of conventional energy-ray curing resins and which is simple and has a high design freedom.

Abstract: The invention relates to a radiation curable composition comprising radiation curable components wherein at least one component of the radiation curable composition contains a functional group which, when attached to an acrylate group has a calculated Boltzmann average dipole moment of higher than 3.5 Debye. The invention further relates to radiation curable optical fiber coating compositions having a high dielectric constant.

Abstract: A method is provided for carrying out depolymerization of a polymer containing electrophilic linkages in the presence of a catalyst and a nucleophilic reagent, wherein production of undesirable byproducts resulting from polymer degradation is minimized. The reaction can be carried out at a temperature of 80° C. or less, and generally involves the use of an organic, nonmetallic catalyst, thereby ensuring that the depolymerization product(s) are substantially free of metal contaminants. In an exemplary depolymerization method, the catalyst is a carbene compound such as an N-heterocyclic carbene, or is a precursor to a carbene compound. The method provides an important alternative to current recycling techniques such as those used in the degradation of polyesters, polyamides, and the like.

Abstract: A method is provided for carrying out depolymerization of a polymer containing electrophilic linkages in the presence of a catalyst and a nucleophilic reagent, wherein production of undesirable byproducts resulting from polymer degradation is minimized. The reaction can be carried out at a temperature of 80° C. or less, and generally involves the use of an organic, nonmetallic catalyst, thereby ensuring that the depolymerization product(s) are substantially free of metal contaminants. In an exemplary depolymerization method, the catalyst is a carbene compound such as an N-heterocyclic carbene, or is a precursor to a carbene compound. The method provides an important alternative to current recycling techniques such as those used in the degradation of polyesters, polyamides, and the like.

Abstract: The present invention discloses an ultraviolet light curable silver chloride compositions and method for making such a composition that may be used to produce a silver coating on a substrate. The disclosed composition does not contain any significant amount of volatile organic solvents that do not become incorporated in the active layer after curing.

Abstract: The present invention discloses an ultraviolet light curable paint composition and method for applying and making such a composition to a substrate. Suitable substrates include glass, metals, and various plastics such as polycarbonates. The disclosed composition does not contain any significant amount of volatile organic solvents that do not become incorporated in the coating or are released to ambient after curing.

Abstract: A process for preparing a multicomponent system curable thermally and with actinic radiation (dual cure), where (A) at least one component comprising at least one constituent (A1) containing per molecule at least two isocyanate-reactive functional groups, and (B) one component containing one polyisocyanate (B1), are mixed with one another, which comprises mixing component (A) and/or component (B), shortly before their mixing, with one further liquid component (C) comprising (C1) one constituent which is curable with actinic radiation and contains per molecule at least two functional groups which contain bond which can be activated with actinic radiation, and/or (C2) one constituent which is curable thermally and with actinic radiation and contains per molecule at least one functional group which contains at least one bond which can be activated with actinic radiation, and containing per molecule at least one isocyanate-reactive functional group or containing at least one isocyanate group, and subsequently mi

Abstract: A method for manufacturing a decorative floor covering is provided in which the floor covering includes a backing layer, a substrate layer and a surface layer. The backing layer includes at least one of a foaming sub-layer, a mechanical foaming sub-layer and a sizing sub-layer. The surface layer includes at least one of a foaming sub-layer, a non-foaming sub-layer, a printing sub-layer and a skin sub-layer. The method for manufacture includes: (i) air-knife coating a surface treatment composition to a thickness of 10 to 40 ?m on the surface layer wherein the surface treatment composition includes an urethaneacrylate oligomer, an acrylate based monomer, acetophenone photoinitiator, a silicon additive and a matting agent, and (ii) curing the surface treatment composition at a line speed of 5 to 30 m/min using 4 to 8 lamps having an output of 200 to 300 watt/in2 with the strongest wavelength at 365 nm.

Abstract: The present invention discloses an ultraviolet light curable ferromagnetic composition and method for making such a composition that may be used to produce a ferromagnetic coating on a suitable substrate. These coatings may be used to produce printed capacitors and inductors. The disclosed composition does not contain any significant amount of volatile organic solvents that do not become incorporated in the active layer after curing.

Abstract: Into a mixture solution 2 of a high-refractive-index photo-curable resin A and a low-refractive-index photo-curable resin B, light capable of curing only the resin A is led through an optical fiber 1 so that a cured resin 211 of the resin A having a diameter substantially equal to the diameter of a core portion of the optical fiber is formed so as to extend from a tip of the optical fiber. Then, the residual mixture solution 2 is cured. In this manner, a module having the previously cured high-refractive-index resin 211 as an optical waveguide can be formed easily. On this occasion, the mixed state of the mixture solution 2 can be kept good enough to facilitate the formation of the high-refractive-index resin 211 when the solubility parameter ?A of the high-refractive-index photo-curable resin A and the solubility parameter ?B and volume fraction ?B of the low-refractive-index photo-curable resin B satisfy the following expression (4). |?A??B|<?7.5?B+6.

Abstract: Curable pressure sensitive adhesive compositions comprising an acrylate copolymer, a mono-acrylate oligomer, a multi-acrylate oligomer having from 2 to 5 acrylate functional groups per molecule, and a photoinitiator, the adhesive exhibiting pressure sensitive adhesive characteristics and forms at least a semi-interpenetrating polymer network when cured; wherein the semi-IPN has an average molecular weight between crosslinks (Mc) greater than about 3000, and the cured adhesive has a peel strength greater than about 40 N/dm. Embodiments of the adhesive compositions, when cured, are optically clear and resistant to heat and moisture.

Abstract: A fast-curing, low viscosity composition for coating an optical waveguide, more specifically, an optical fiber, and optical fibers coated therewith are disclosed. The coating composition is a radiation curable composition containing: a radiation curable oligomer, a free radical photoinitiator, and a mixture of reactive diluents including a low molecular weight (meth)acrylate having tri-, tetra-, penta- or higher functionality.

Abstract: Compositions for use in optical fiber coatings and optical fibers and optical fiber arrays using these coatings are disclosed, as are methods for making the same. The compositions comprise a combination of two different radiation curable urethane oligomers, and can further comprise one or more reactive monomers. One of the oligomers has at least three functional groups that can undergo radiation cure.

Abstract: The present invention provides a material having adhesiveness to bone and/or fascia, which is composed of a polymeric material comprising carbon as a constituent element, and at least a part of a surface of which is modified by ion bombardment. The material of the present invention is applicable as a prosthesis in surgery of spinal diseases and as a prosthesis in surgery on thoracic organs and abdominal organs or musculoskeleton in addition to the application thereof to the artificial dura mater.

Abstract: The invention includes an optical fiber coating that exhibits the characteristics of a pressure sensitive adhesive. A viscoelastic window for the coating will include at least one set of coordinates that is within Quadrants 2, 3, or 4 or the Transition Flow Region of the Chang viscoelastic of the rheological master curves or will not include at least one set of coordinates that is not within Quadrant 1 of the Chang viscoelastic of the rheological master curves.

Abstract: A radiation curable powder coating composition that contains a) a binder having at least one amorphous urethane acrylate having a glass transition temperature of at least 35° C. and a melting point of from 50 to 120° C.; and b) an auxiliary, can be crosslinked by radiation to produce a lightfast and weather-stable film.

Abstract: The present invention provides a curable composition, comprising: a (meth)acrylate urethane compound derived from a polypropylene glycol or a propyleneoxide ethyleneoxide copolymer glycol having a molecular weight between 1,000 and 13,000 and an amount of unsaturation less than 0.01 meq/g. The liquid curable resin composition of the present invention has improved liquid stability and can produce cured products having superior mechanical characteristics by polymerization. The composition further comprises preferably a primary or secondary amine. The liquid curable resin composition can be used as a coating material for optical fibers, adhesives, and the like. The composition is particularly suitable as a coating material for optical fibers for which long-term stability is required.

Abstract: This invention provides a process for the production of molded particles for enzyme- or microbial cell-immobilization which is characterized in that: an aqueous liquid composition which comprises: (A) an unsaturated group-containing urethane resin which is obtained by making a compound (a) having one hydroxyl group and one epoxy group in a molecule react with a compound (b) having one carboxyl group and one ethylenically unsaturated group in a molecule, and further making thus obtained unsaturated group-containing diol (c) react with polyisocyanate compound (d); (B) a polymerization initiator; and (C) water-soluble macromolecular polysaccharides which are capable of gelation by contact with metal ion; is gelatinized, in an aqueous medium which contains metal ion, to be particulate gel, which is then subjected to photopolymerization and/or thermopolymerization by which to cause the crosslinking reaction of ethylenically unsaturated group in said particulate gel.

Abstract: The present invention provides radiation-curable compositions and products coated therewith, such as coated optical fibers. The present compositions have a low amount of, or are even absent of, reactive diluents while still exhibiting a sufficiently low viscosity to be useful in a wide variety of coating applications, such as in processes for coating optical fibers.

Abstract: A hydrophilic or hydrophobic polyurethane having at least one olefinically unsaturated group selected from the group consisting of pendant olefinically unsaturated groups, terminal olefinically unsaturated groups, and mixtures thereo wherein the pendant olefinically unsaturated groups are sele consisting of pendant olefinically unsaturated groups which are attached to a cycloaliphatic group which represents a link in the polymer main chain and pendant olefinically unsaturated groups which are present as a double bond in a cycloolefinic group which constitutes a link in the polymer main chain, and the terminal olefinically unsaturated groups are selected from the group consisting of terminal olefinically unsaturated groups which are attached to a cycloaliphatic group which forms an endgroup of the polymer main chain and terminal olefinically unsaturated groups which are present as a double bond in a cycloolefinic structure which forms en endgroup of the polymer main chain.

Abstract: The invention provides curable organic coatings with improved scratch resistance. More particularly, the present invention relates to a combination of inorganic filler having a 50th percentile particle diameter of from about 3 to about 9 micrometers comprised of aluminum oxide, silicon dioxide, ceramic spheres or mixtures thereof, and particles having a 50th percentile particle diameter of from about 10 to about 150 micrometers. The liquid coatings have a viscosity before curing of from about 100 cps (mPa-s) to about 70,000 cps (mPa-s) at a shear rate of 0.15 s?1. The use of inorganic filler materials of the defined type and particle size are combined with the curable organic coating to improve the scratch resistance of the coating without a negative impact on the physical and performance properties or application parameters of the original coating material.

Abstract: The invention relates to macromolecular hydrophilic photocrosslinkers having polymeric backbones of substituted ethylene groups carrying photoactive groups. The photocrosslinkers are capable of producing, when being exposed to light of determined wavelengths above 305 nm, radicals which are retained on the macromolecular photocrosslinkers and reacting so as to accomplish a crosslinked network structure. The invention further relates to the preparation of photocrosslinkers, their use in different aqueous systems and their utility in production of medical devices including ophthalmic lenses.

Abstract: The present invention is directed to a radiation curable primary coating composition and an optical fiber with said coating. The primary coating preferably results in excellent mechanical and physical properties, and when coated on optical fibers in a reduction in micro-bending transmission losses over optical fibers with conventional coatings. In one embodiment of this invention, it relates to a coated optical fiber comprising an optical fiber and a radiation cured primary coating wherein the radiation cured primary coating on the optical fiber comprises an oligomer and wherein the oligomer is formed from a reaction comprising a polyol having “m” hydroxyl functional groups, wherein “n” hydroxyl groups of said polyol are terminated in forming the oligomer and “m” is greater than “n”.

Abstract: A surface treatment composition of the present invention comprises (A) urethaneacrylate oligomer, (B) acrylate based monomer, (C) photoinitiator; (D) silicon additive, and (E) silica matting agent. The present invention provides a surface treatment composition in which imparts abrasion and scratch resistance to the surface of a soft type urethaneacrylate oligomer decorative floor covering, and ameliorates the problem of low stain resistance caused a low density of elaborate crosslinks by using a small amount of single functional group monomer. The present invention also provides a surface treatment composition in which employs only hard type urethaneacrylate without single functional group monomer so that cross linking density is increased and the effects of oxygen that prohibits the surface curing are minimized, resulting in improved stain resistance.

Abstract: The invention provides a reaction product derived from an epoxy-functional acrylic monomer and an alkylaminoalkylene polyalkoxysilane or from a reaction product derived from acrylic acid and an epoxidized polyalkoxysilane.

Abstract: The invention provides organic coatings with improved scratch resistance. More particularly, the present invention relates to the use of inorganic filler materials of a defined type and particle size which can be added to curable organic coatings to improve the scratch resistance of the coating without a negative impact on the physical and performance properties or application parameters of the original coating material.

Abstract: A method for curing an active single phase water compatible actinic radiation curable composition, comprising: irradiating a water compatible non emulsion, non dispersing compound, water, and a maleimide derivative.

Abstract: The coating composition comprises a radiation curable component (a1), a thermally curable binder component (a2), a thermally curable crosslinking component (a3), and optionally, one or more reactive diluents (a4). Radiation curable component (a1) is polymerizable upon exposure to electromagnetic radiation and comprises at least two functional groups (a11) comprising at least one bond activatable with electromagnetic radiation. Thermally curable binder component (a2) is polymerizable upon exposure to heat and has at least two functional groups (a21) which are reactive with functional groups (a31). Third component (a3) comprises at least 2.0 functional groups (a31) which are reactive with functional groups (a21). The value of UV/TH, the nonvolatile weight ratio of the sum of radiation curable component (a1) and optional reactive diluent (a4) to the sum of thermally curable binder component (a2) and thermally curable crosslinking component (a3) is from 0.20 to 0.60.

Abstract: Solids containing (i) on average per molecule at least two groups (a) having at least one bond which can be activated with actinic radiation whereby the groups (a) are structurally different from one another and are attached to the parent structure of the solid via urethane groups, or containing (ii) on average per molecule more than one group (a) having at least one bond which can be activated with actinic radiation, the groups being structurally different from one another or the same and being attached to the parent structure of the solid via urethane groups, and from 0.

Abstract: A radiation curable powder coating composition, comprising I.) a binder comprising A) 60-90% by weight of at least one amorphous urethane acrylate; and B) 10-40% by weight of at least one crystalline urethane acrylate; wherein a Tg of a mixture of A) and B) is at least 35° C.; and II.) an auxiliary and an additive, excluding an UV initiator, crosslinks to yield a lightfast and weather-stable film.

Abstract: Provided are an active energy ray-curable urethane (meth)acrylate and an active energy ray-curable composition for paints and coating agents having abrasion resistance and lubricity, and uses thereof. The curable urethane (meth)acrylate has a long chain alkyl group having 13 to 25 carbon atoms and an active energy ray-curable functional group and is modified with polycaprolactone. The urethane (meth)acrylate is obtainable by reacting an organic isocyanate having three or more isocyanate groups in one molecule, a long chain alkyl alcohol, and a polycaprolactone-modified hydroxyethyl (meth)acrylate. On the other hand, the active energy ray-curable composition contains the urethane (meth)acrylate.

Abstract: Dual cure coating composition comprising resin solids, said resin solids being composed of (a) 30 to 90 wt. % of at least one hydroxy-functional polyester urethane having olefinic double bonds, (b) 0 to 60 wt. % of at least one binder other than the polyester urethane (a) and/or at least one reactive diluent, and (c) 10 to 50 wt.

Abstract: The present invention relates to powder coating binders containing polyurethanes having (meth)acryloyl groups which are applied onto a substrate, fused with heat and cured by electromagnetic radiation and to a process for preparing the same.

Abstract: A surface treatment composition of the present invention comprises (A) urethaneacrylate oligomer, (B) acrylate based monomer, (C) photoinitiator; (D) silicon additive, and (E) silica matting agent. The present invention provides a surface treatment composition in which imparts abrasion and scratch resistance to the surface of a soft type urethaneacrylate oligomer decorative floor covering, and ameliorates the problem of low stain resistance caused a low density of elaborate crosslinks by using a small amount of single functional group monomer. The present invention also provides a surface treatment composition in which employs only hard type urethaneacrylate without single functional group monomer so that cross linking density is increased and the effects of oxygen that prohibits the surface curing are minimized, resulting in improved stain resistance.

Abstract: A method for manufacturing a decorative floor covering is provided in which the floor covering includes a backing layer, a substrate layer and a surface layer. The backing layer includes at least one of a foaming sub-layer, a mechanical foaming sub-layer and a sizing sub-layer. The surface layer includes at least one of a foaming sub-layer, a non-foaming sub-layer, a printing sub-layer and a skin sub-layer. The method for manufacture includes: (i) air-knife coating a surface treatment composition to a thickness of 10 to 40 &mgr;m on the surface layer wherein the surface treatment composition includes an urethaneacrylate oligomer, an acrylate based monomer, acetophenone photoinitiator, a silicon additive and a matting agent, and (ii) curing the surface treatment composition at a line speed of 5 to 30 m/min using 4 to 8 lamps having an output of 200 to 300 watt/in2 with the strongest wavelength at 365 nm.

Abstract: A polymerizable solid aliphatic polyurethane containing olefinically unsaturated double bonds, having a very narrow melting range within the temperature range from 40 to 200° C., which is preparable from A) at least one linear aliphatic diisocyanate, B) at least one aliphatic compound containing at least two isocyanate-reactive functional groups and/or water, and C) at least one olefinically unsaturated compound containing an isocyanate-reactive functional group, and its use as a powder coating material or for preparing powder coating materials.