A curable composition that has low viscosity and rapid curing ability in the form of thin film, further has excellent resistance to emulsification and preservation stability, and has high hardness in the form of cured film, thereby achieving excellent alkali developability, which is preferably an active energy beam-curable composition, is provided. The provided is a curable composition, which includes a mixture (A) of a compound having two or more (meth)acryloyl groups that is obtained by conducting a transesterification reaction of diglycerin and/or glycerin and a compound having one (meth)acryloyl group under the presence of the following catalysts X and Y: catalyst X: a compound that is at least one member selected from the group consisting of cyclic tertiary amine having an azabicyclo structure or a salt or complex thereof, amidine or a salt or complex thereof, and a compound having a pyridine ring or a salt or complex thereof; and catalyst Y: a compound including zinc.

A curable composition that has low viscosity and rapid curing ability in the form of thin film, further has excellent resistance to emulsification and preservation stability, and has high hardness in the form of cured film, thereby achieving excellent alkali developability, which is preferably an active energy beam-curable composition, is provided. The provided is a curable composition, which includes a mixture (A) of a compound having two or more (meth)acryloyl groups that is obtained by conducting a transesterification reaction of diglycerin and/or glycerin and a compound having one (meth)acryloyl group under the presence of the following catalysts X and Y: catalyst X: a compound that is at least one member selected from the group consisting of cyclic tertiary amine having an azabicyclo structure or a salt or complex thereof, amidine or a salt or complex thereof, and a compound having a pyridine ring or a salt or complex thereof; and catalyst Y: a compound including zinc.

A process for polymerizing radically (co)polymerizable monomers at a temperature between 10 C. and 110 C. in an aqueous system comprising one or more radically (co)polymerizable monomer(s) is disclosed, and includes a molar excess of a ligand forming a soluble transition metal complex with an added transition metal salt that participates in a reversible reduction-oxidation cycle with one of an added site specific functional initiator and a dormant polymer chain having a radically transferable atom or group. The initial soluble catalyst complex concentration in the higher oxidation state is less than or equal to 2500 ppm. The reaction is conducted in the presence of an activator regenerator. The mole fraction of the soluble lower activator oxidation state transition metal formed by action of the activator regenerator, to transition metal in a higher deactivator oxidation state is less than 10%. The formed polymer chains have a dispersity of less than 1.5.

A process for polymerizing radically (co)polymerizable monomers at a temperature between 10 C. and 110 C. in an aqueous system comprising one or more radically (co)polymerizable monomer(s) is disclosed, and includes a molar excess of a ligand forming a soluble transition metal complex with an added transition metal salt that participates in a reversible reduction-oxidation cycle with one of an added site specific functional initiator and a dormant polymer chain having a radically transferable atom or group. The initial soluble catalyst complex concentration in the higher oxidation state is less than or equal to 2500 ppm. The reaction is conducted in the presence of an activator regenerator. The mole fraction of the soluble lower activator oxidation state transition metal formed by action of the activator regenerator, to transition metal in a higher deactivator oxidation state is less than 10%. The formed polymer chains have a dispersity of less than 1.5.

The present invention relates to an organic zinc compound comprising a styrene-based polymer or a polyolefin-polystyrene block copolymer at both ends. Also, the present invention relates to a method for preparing the organic zinc compound, the method preparing an intermediate by coordination-polymerizing an olefin monomer using a transition metal catalyst, and then performing anionic polymerization by inserting an alkyllithium compound, an amine ligand, and a styrene-based monomer into the intermediate. Accordingly, the present invention can provide a method for preparing a commercially useful styrene-based polymer or polyolefin-polystyrene block copolymer directly from an olefin monomer and a styrene monomer in a one-pot manner.

The present invention relates to an organic zinc compound comprising a styrene-based polymer or a polyolefin-polystyrene block copolymer at both ends. Also, the present invention relates to a method for preparing the organic zinc compound, the method preparing an intermediate by coordination-polymerizing an olefin monomer using a transition metal catalyst, and then performing anionic polymerization by inserting an alkyllithium compound, an amine ligand, and a styrene-based monomer into the intermediate. Accordingly, the present invention can provide a method for preparing a commercially useful styrene-based polymer or polyolefin-polystyrene block copolymer directly from an olefin monomer and a styrene monomer in a one-pot manner.

A procedure for improved temperature control in controlled radical polymerization processes is disclosed. The procedure is directed at controlling the concentration of the persistent radical in ATRP and NMP polymerizations procedures and the concentration of radicals in a RAFT polymerization process by feeding a reducing agent or radical precursor continuously or intermittently to the reaction medium through one of more ports.

A procedure for improved temperature control in controlled radical polymerization processes is disclosed. The procedure is directed at controlling the concentration of the persistent radical in ATRP and NMP polymerizations procedures and the concentration of radicals in a RAFT polymerization process by feeding a reducing agent or radical precursor continuously or intermittently to the reaction medium through one of more ports.

Fibers and methods of forming the fibers are described herein. The fibers generally include an ethylene based polymer exhibiting a molecular weight distribution of from about 2 to about 8.

A procedure for improved temperature control in controlled radical polymerization processes is disclosed. The procedure is directed at controlling the concentration of the persistent radical in ATRP and NMP polymerizations procedures and the concentration of radicals in a RAFT polymerization process by feeding a reducing agent or radical precursor continuously or intermittently to the reaction medium through one of more ports.