To provide a curable composition that is readily modeled with low viscosity and excellent curing capability in modeling by stereolithography, and provides a cured article excellent in toughness and water resistance, and a resin composition for stereolithography prepared therefrom. To provide a resin composition for stereolithography that is favorable particularly for a dental mouthpiece and a denture base material. A curable composition containing 79.0 to 99.0% by mass of a polymerizable monomer (a), 0.1 to 10.0% by mass of a photopolymerization initiator (b), and 0.01 to 20.0% by mass of a compound (c) represented by the following general formula (I): ##STR00001##

To provide a curable composition that is readily modeled with low viscosity and excellent curing capability in modeling by stereolithography, and provides a cured article excellent in toughness and water resistance, and a resin composition for stereolithography prepared therefrom. To provide a resin composition for stereolithography that is favorable particularly for a dental mouthpiece and a denture base material. A curable composition containing 79.0 to 99.0% by mass of a polymerizable monomer (a), 0.1 to 10.0% by mass of a photopolymerization initiator (b), and 0.01 to 20.0% by mass of a compound (c) represented by the following general formula (I): ##STR00001##

Disclosed and claimed herein are radiation curable compositions for coating an optical fiber containing an oligomer, a diluent, a photoinitiator, and optionally, additives. The oligomer includes a reactive urethane oligomer having at least three arms, each arm having a most distal termination point and bound together at a single junction point, wherein at least one arm comprises the reaction product of a polyol, a polyisocyanate, and an isocyanate-reactive (meth)acrylate. The reactive urethane oligomer possesses specified molecular weight and/or average functionality values, and it may possess specified chain length values between the oligomer junction point and the distal termination point along one or more arm(s). Also disclosed are methods of coating an optical fiber incorporating the compositions described herein, along with the coated optical fibers and cables produced therefrom.

Disclosed and claimed herein are radiation curable compositions for coating an optical fiber containing an oligomer, a diluent, a photoinitiator, and optionally, additives. The oligomer includes a reactive urethane oligomer having at least three arms, each arm having a most distal termination point and bound together at a single junction point, wherein at least one arm comprises the reaction product of a polyol, a polyisocyanate, and an isocyanate-reactive (meth)acrylate. The reactive urethane oligomer possesses specified molecular weight and/or average functionality values, and it may possess specified chain length values between the oligomer junction point and the distal termination point along one or more arm(s). Also disclosed are methods of coating an optical fiber incorporating the compositions described herein, along with the coated optical fibers and cables produced therefrom.

To provide a curable composition that is readily modeled with low viscosity and excellent curing capability in modeling by stereolithography, and provides a cured article excellent in toughness and water resistance, and a resin composition for stereolithography prepared therefrom. To provide a resin composition for stereolithography that is favorable particularly for a dental mouthpiece and a denture base material. A curable composition containing 79.0 to 99.0% by mass of a polymerizable monomer (a), 0.1 to 10.0% by mass of a photopolymerization initiator (b), and 0.01 to 20.0% by mass of a compound (c) represented by the following general formula (I):

##STR00001##

To provide a curable composition that is readily modeled with low viscosity and excellent curing capability in modeling by stereolithography, and provides a cured article excellent in toughness and water resistance, and a resin composition for stereolithography prepared therefrom. To provide a resin composition for stereolithography that is favorable particularly for a dental mouthpiece and a denture base material. A curable composition containing 79.0 to 99.0% by mass of a polymerizable monomer (a), 0.1 to 10.0% by mass of a photopolymerization initiator (b), and 0.01 to 20.0% by mass of a compound (c) represented by the following general formula (I):

##STR00001##

The present invention discloses a copolymer for a polymer electrolyte, and a gel polymer electrolyte and a lithium secondary battery which include the same. Specifically, the present invention discloses a copolymer for a polymer electrolyte, which includes a fluorine-based polymer main chain and a unit derived from an acrylate-based monomer or an acrylate-based polymer containing an ion conductive functional group grafted to the fluorine-based polymer main chain, and a gel polymer electrolyte in which lithium ion transfer capability is improved by including the same. Also, the present invention may prepare a lithium secondary battery with enhanced high-temperature safety by including the gel polymer electrolyte.

The present invention discloses a copolymer for a polymer electrolyte, and a gel polymer electrolyte and a lithium secondary battery which include the same. Specifically, the present invention discloses a copolymer for a polymer electrolyte, which includes a fluorine-based polymer main chain and a unit derived from an acrylate-based monomer or an acrylate-based polymer containing an ion conductive functional group grafted to the fluorine-based polymer main chain, and a gel polymer electrolyte in which lithium ion transfer capability is improved by including the same. Also, the present invention may prepare a lithium secondary battery with enhanced high-temperature safety by including the gel polymer electrolyte.

Provided is an active energy ray curable composition cured by irradiation of active energy rays. The active energy ray curable composition contains an (A) radical polymerizable compound, a (B) photopolymerization initiator, and a (C) amine compound. The (B) photopolymerization initiator includes a (B1) sulfur compound and a (B2) acyl phosphine oxide compound. The (B1) sulfur compound is at least one of a sulfone compound and a thiobenzoyl compound.

An object of the present invention is to provide a novel polymer composition for stereolithography that is capable of suitably providing an elastic molded product by stereolithography. A polymer composition for stereolithography containing a liquid polymer and a monomer, the polymer composition for stereolithography having a viscosity of 3,000 mPa.Math.s or less, the viscosity being measured in an environment of a temperature of 25° C. and a relative humidity of 50% using an E-type viscometer under conditions of a cone plate diameter φ of 25 mm and a shear rate of 100 sec.sup.−1.