Abstract: The invention is directed to a polymerizable composition containing: a compound containing a repeating unit having a polyether structure having a fluorine atom and four or more polymerizable groups and being represented by the formula (I) as defined herein; a photopolymerization initiator; and an organic solvent, or a polymerizable composition containing: a compound containing a repeating unit having a polyether structure having a fluorine atom and four or more polymerizable groups and being represented by one of the formulae (I-1) to (I-5) as defined herein; a photopolymerization initiator; and an organic solvent.

Abstract: The present invention aims to provide a surface modification method for a rubber vulcanizate or a thermoplastic elastomer, which can impart excellent sliding properties and durability against repeated sliding motion and can allow the surface to maintain the sealing properties, without using expensive self-lubricating plastics. The present invention relates to a surface modification method for modifying a rubber vulcanizate or a thermoplastic elastomer as an object to be modified, the method including: Step 1 of allowing a photopolymerization initiator to be adsorbed on a surface of the object to be modified; and Step 2 of radical polymerizing monomers, starting from the adsorbed photopolymerization initiator, by irradiation with UV light at a wavelength of 300 nm to 400 nm to grow polymer chains on the surface of the object to be modified.

Abstract: The invention relates to a dental restorative material on the basis of at least one compound of Formula I A-[X-Q-(Y-CG)n]m?? Formula I, wherein CG represents in each case independently an azide group N3 or an alkyne group selected from the group consisting of —CR1R2—C?CH, with the proviso that the dental restorative material comprises at least one compound of Formula I comprising an azide group and at least one compound of Formula I comprising an alkyne group. The invention also relates to the use of the dental restorative materials according to the invention for preparing dental composites, preferably composite blanks, which are suitable in particular for mechanical processing by means of computer-aided processing techniques such as milling and grinding processes, and which are suitable above all for preparing dental restoration materials such as inlays, onlays, crowns, bridges or veneering materials.

Abstract: A compound represented by the following general formula (1). In the formula, A represents a benzene ring, a naphthalene ring and the like, wherein these rings may be substituted with a halogen atom and the like, R1 represents a hydrogen atom and the like, R2 represents a C1-35 hydrocarbon group having or not having at least one group selected from an epoxy group, 4-vinylphenyl group and a (meth)acryloyloxy group, or a hydrogen atom, wherein at least one of R2 with n occurrences is a C3-35 hydrocarbon group having at least one group selected from an epoxy group, a 4-vinylphenyl group and a (meth)acryloyloxy group, n represents an integer of 1 to 6, and X represents a nitrogen atom, an oxygen atom, a sulfur atom, a phosphorus atom, or an n-valent organic group having 35 or less carbon atoms.

Abstract: The present invention aims to provide a surface modification method for a rubber vulcanizate or a thermoplastic elastomer, which can impart various functions such as sliding properties and biocompatibility according to its use. The present invention relates to a surface modification method for modifying a rubber vulcanizate or a thermoplastic elastomer as an object to be modified, the method including: Step 1 of forming polymerization initiation points on a surface of the object to be modified; Step 2 of radical polymerizing monomers starting from the polymerization initiation points to grow polymer chains on the surface of the object to be modified; and Step 3 of functionalizing the polymer chains.

Abstract: A photopolymerizable and photocleavable (P&P) resin monomer is derived from a reactive photoresponsible moiety via various linkages to form photopolymerizable monomers and/or oligomers.

Abstract: The present invention relates to dental polymerizable composite materials (curable dental compositions) comprising one or more plasticizers comprising a tricyclic structural element, to dental materials (polymers), obtainable by curing from the dental polymerizable composite materials comprising one or more plasticizers comprising a tricyclic structural element, to processes for producing a dental material and to dental curable composite materials for use in a therapeutic method in the production of a dental material.

Abstract: Provided is an energy ray-curable elastomer composition which can increase the inter-crosslinking point molecular weight without changing the kind of an energy ray-curable compound before cured and which provides an oligomer-cured substance having a braking elongation compatible with a processability, to be specific, an energy ray-curable elastomer composition containing (A) an energy ray-curable compound having a (meth)acryloyl group and (B) a polythiol compound having 2 to 6 mercapto groups in a molecule, wherein a functional group number ratio of the (meth)acryloyl group in the above composition to the mercapto group in the component (B) is 100:0.1 to 100:5n (n is the number of the mercapto group in a molecule of the polythiol compound).

Abstract: The present invention presents methods for making oxidation-resistant and wear-resistant polyethylenes and medical implants made therefrom. Preferably, the implants are components of prosthetic joints, e.g., a bearing component of an artificial hip or knee joint. The resulting oxidation-resistant and wear-resistant polyethylenes and implants are also disclosed.

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

Abstract: Photoactive additives are disclosed. Such additives are polymers or oligomers that contain UV-active groups (such as ketone groups) and contain polysiloxane blocks as well. When added to a base polymeric resin and used in molding, this structure promotes migration of the additive to the surface. Crosslinking occurs upon exposure to ultraviolet light.

Abstract: The invention provides a method for the manufacture of a gel, said method comprising the steps of: providing a matrix composition comprising a polymeric photoinitiator of the general formula (I): Polymer-[CR2—CHR-Spacer(PI)n]m (I) curing the matrix composition by exposing it to UV radiation and exposing the matrix composition to a swelling medium. The invention also relates to gels obtainable via the above method. The invention provides a hydrophilic gel precursor manufactured from the polymeric photoinitiator of Formula (I). Medical devices comprising the gels and hydrophilic gel precursors of the invention are provided. The invention also provides the use of a polymeric photoinitiator in the manufacture of a gel.

Abstract: A method and a system for producing a change in a medium. The method places in a vicinity of the medium at least one energy modulation agent. The method applies an initiation energy to the medium. The initiation energy interacts with the energy modulation agent to directly or indirectly produce the change in the medium. The system includes an initiation energy source configured to apply an initiation energy to the medium to activate the energy modulation agent.

Abstract: A polytetrafluoroethylene resin comprising polytetrafluoroethylene having a two-dimensional branched structure in the molecule is produced by exposing polytetrafluoroethylene to an ionizing radiation at a dose of no more than 10 kGy.

Abstract: The present invention presents methods for making oxidation-resistant and wear-resistant polyethylenes and medical implants made therefrom. Preferably, the implants are components of prosthetic joints, e.g., a bearing component of an artificial hip or knee joint. The resulting oxidation-resistant and wear-resistant polyethylenes and implants are also disclosed.

Abstract: The invention relates to a method for reacting polymers (A) comprising hydroxyl groups and which have repetitive structural units of general formula (I), wherein D represents a direct bond between the polymer backbone and a hydroxyl group, a C1- to C6-alkene group, a C5- to C12-arylene group, an oxyalkylene group of formula —O—R2—, an ester group of formula —C(O)—O—R2— or an amide group of formula —C(O)—N(R8)R2—, R2 represents a C2- to C10-alkene group, R8 represents hydrogen or an optionally substituted C2- to C10-alkyl group and n represents a number between 3 and 5000, with carboxylic acids B1) of formula (II) or carboxylic acid esters B2) of formula (III) R1—COOH (II) R1—COOR7 (III), wherein R1 represents a hydrocarbon group having 2 to 50 C atoms, and R7 represents a C1C4-alkyl group, in which the polymers (A); comprising the hydroxyl groups are exposed to microwaves in the presence of carboxylic acids of formula (II) or carboxylic acid esters of formula (III) and in the presence of water.

Abstract: The invention provides a polymerizable compound represented by formula (I), a polymerizable composition, and a polymer that have a practical low melting point, can be produced at low cost, and can produce an optical film that achieves uniform conversion of polarized light over a wide wavelength band, and an optically anisotropic article.

Abstract: The present invention relates to an application of a composition containing telechelic macromer and photoinitiator for producing implant for hernia repair. The macromer structure is defined by Formula 1. The macromer bears (meth)acrylic end-groups and comprises a core Y defined by Formulas 2 to 9, that is linked by urethane, ester or anhydride bonds to the (meth)acrylic groups. The iodine value of the macromer is from 5 to 75. The composition according to the present invention can be shaped at room temperature and at 37° C. and is capable of undergoing liquid-to-solid transition upon irradiation with low intensity light. Upon irradiation with light the composition gains desired physicochemical properties and turns into an elastic solid. The implant for hernia repair serves for closing the hernia opening and for enhancing mechanical strength of abdominal wall.

Abstract: A radiation curable composition comprising 15 to 85 wt % of at least one solvent comprising ?20 wt % of water; 5 to 50 wt % of at least one radiation curable material having a Mn in the range of from 50 to 10,000 g/mol; and 10 to 70 wt % of at least one polyurethane having a Mw in the range of from 4,000 to 70,000 g/mol, the polyurethane having 0 to 5 wt % of isocyanate-reactive component(s) bearing ionic or potentially ionic water-dispersing groups and a free isocyanate group content ?0.5 wt %.

Abstract: The disclosure provides a benzene ring containing compound, sealing gel, a process for preparing the same and use thereof. The compound has the following Formula (I), wherein R1 and R2 are the same or different, and represent alkyls of 1˜4 carbon atoms, respectively. The sealing gel of the disclosure comprises one or more compounds as shown by Formula (I). The sealing gel of the disclosure not only has high binding strength to a glass substrate, but also has a good binding performance to the oriented film, thereby preventing the drop of the binding performance between the colored film substrate and the array substrate, while also decreasing the contamination of external impurities to the liquid crystals in the box.