A modified liquid diene-based rubber (A) including, in a molecule, a modified group (a) containing a (meth)acryloyl group as a part thereof and at least one modified group (b) selected from a dicarboxylic acid monoester and a dicarboxylic acid monoamide, with the proviso that the modified group (b) comprises no (meth)acryloyl group as a part thereof, wherein the functional group equivalent weights of the modified group (a) and the modified group (b) are each in the range of 700 to 40,000 g/eq. Also provided is a curable resin composition containing the modified liquid diene-based rubber.

A non-aqueous metal catalytic composition includes (a) a silver carboxylate-trialkyl(triaryl)phosphite complex comprising reducible silver ions in an amount of at least 2 weight %, (b) a silver ion photoreducing composition in an amount of at least 1 weight %, and (c) a photocurable component or a non-curable polymer or a combination of a photocurable component and a non-curable polymer. This non-aqueous metal catalytic composition can be used to form silver metal particles in situ during suitable reducing conditions. The silver metal can be provided in a suitable layer or pattern on a substrate, which can then be subsequently subjected to electroless plating to form electrically-conductive layers or patterns for use in various articles or as touch screen displays in electronic devices.

A non-aqueous metal catalytic composition includes (a) a complex of silver and a hindered aromatic N-heterocycle comprising reducible silver ions in an amount of at least 2 weight %, (b) a silver ion photoreducing composition in an amount of at least 1 weight %, and (c) a photocurable component, a non-curable polymer, or a combination of a photocurable component and a non-curable polymer. This non-aqueous metal catalytic composition can be used to form silver metal particles in situ during suitable reducing conditions. The silver metal can be provided in a suitable layer or pattern on a substrate, which can then be subsequently subjected to electroless plating to form electrically-conductive layers or patterns for use in various articles or as touch screen displays in electronic devices.

A cross-linkable rubber composition for a seal material which is used at an oilfield or gas well comprising a nitrile group-containing copolymer rubber which contains ,-ethylenically unsaturated nitrile monomer units 10 to 60 wt % and has an iodine value of 120 or less, an ,-ethylenically unsaturated carboxylic acid metal salt (B), and an organic peroxide cross-linking agent (C) is provided. According to the present invention, it is possible to provide a rubber composition which is excellent in shapeability, is high in durability against hydrogen sulfide and other corrosive gases, and is suitable for application as a seal material which is used at an oilfield or gas well.

The present invention relates to a biocompatible membrane, specifically to a minimally swellable biocompatible membrane and the preparation method thereof. The preparation method of the minimally swellable biocompatible membrane comprises the following steps: synthesis of a copolymer containing a skeleton and a hydrophilic group, the introduction of a biocompatible property, the preparation of a biocompatible membrane solution, and the coating of the biocompatible membrane. The present invention can effectively regulate glucose, and has high biocompatibility (long service life) as well, thereby improving the sensitivity, accuracy, reproducibility, stability, specificity and anti-interference ability in a continuous glucose monitoring (CGM) system, prolonging the life time of the CGM, and greatly reducing the cost of the CGM.

Provided are: a composition for forming an underlayer film for imprinting, which contains a high-molecular-weight compound having a polymerizable group, a chelating agent, and a solvent, and a method for producing the same; a kit including the composition for forming an underlayer film; a pattern producing method using the composition for forming an underlayer film; and a method for manufacturing a semiconductor element, which includes the pattern producing method as a step.

A metal-clad laminate includes an insulating layer that contains a cured product of a resin composition containing a polymer having a structural unit represented by Formula (1) in a molecule and a metal foil that is laminated on the insulating layer and is a metal foil in which a nickel element amount on a surface on a side in contact with the insulating layer and a nickel element amount on the surface when the surface is sputtered for 1 minute at 3 nm/min in terms of SiO.sub.2 are each 4.5 at % or less with respect to the total element amount on each surface. ##STR00001## In Formula (1), Z represents an arylene group, R.sub.1-R.sub.3 each independently represent a hydrogen atom or an alkyl group, and R.sub.4-R.sub.6 each independently represent a hydrogen atom or an alkyl group having 1-6 carbon atoms.

A method for producing a high-purity polymer (A); and a method for producing a silicone hydrogel lens at a low cost are provided. A method for producing a polymer (A) includes: (step 1) a step of obtaining a polymer (A1) by polymerizing a first monomer (a) that has one ethylenically unsaturated group; (step 2) a step of obtaining a polymer (A2) by having the polymer (A1) react with a second monomer that has an ethylenically unsaturated group; and (step 3) a step of obtaining a polymer (A) by purifying the polymer (A2) with use of a subcritical or supercritical fluid. The first monomer is selected from one of the first group consisting of hydroxyl group-containing monomers, and the second group consisting of isocyanate compounds of (meth)acrylic acids, anhydrides of (meth)acrylic acids, and halides of (meth)acrylic acids. The second monomer is selected from the other of the first and second group.

A method for producing a high-purity polymer (A); and a method for producing a silicone hydrogel lens at a low cost are provided. A method for producing a polymer (A) includes: (step 1) a step of obtaining a polymer (A1) by polymerizing a first monomer (a) that has one ethylenically unsaturated group; (step 2) a step of obtaining a polymer (A2) by having the polymer (A1) react with a second monomer that has an ethylenically unsaturated group; and (step 3) a step of obtaining a polymer (A) by purifying the polymer (A2) with use of a subcritical or supercritical fluid. The first monomer is selected from one of the first group consisting of hydroxyl group-containing monomers, and the second group consisting of isocyanate compounds of (meth)acrylic acids, anhydrides of (meth)acrylic acids, and halides of (meth)acrylic acids. The second monomer is selected from the other of the first and second group.

The present invention provides: a maleimide resin mixture having an excellent low dielectric loss tangent and excellent storage stability in varnished form; a curable resin composition; and a cured product thereof. The maleimide resin mixture comprises: a maleimide resin having repeating units represented by formulas (a) and (b); and bis(3-ethyl-5-methyl-4-maleimidephenyl)methane represented by formula (c), wherein the content of the bismaleimide represented by formula (c) in the total amount of the maleimide resin mixture is 5.0-30.0 area % in terms of GPC area percentage. In the formulas, m is the average number of repetitions and is 0<m<200. n is the average number of repetitions and is 0<n<100. (a) and (b) are each bonded at *, and repetition positions may be random.

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