Abstract: The present invention relates to a branched poly(3-hydroxypropionic acid) polymer that can have biodegradability and a high molecular weight and is advantageous for industrial applications.

Abstract: The present disclosure provides a poly(lactic acid-b-3-hydroxypropionic acid) block copolymer composition comprising: poly(lactic acid-b-3-hydroxypropionic acid) block copolymer and poly(3-hydroxypropionic acid), wherein an average haze is less than 4.0, and a film comprising the same.

Abstract: Provided are a reactive extrusion composition, and a PLA/P(3HP) blend having enhanced mechanical property manufactured therefrom.

Abstract: In a poly(3-hydroxypropionic acid) block copolymer according to the present invention, 3-hydroxypropionic acids and lactone monomers or, additionally, lactide monomers are introduced so as to improve various physical properties such as the thermal property, crystallinity and tensile property of a biodegradable polymer, and thus the application fields thereof can be expanded.

Abstract: A resin polymerization reaction device comprises a reactor in which a resin is accommodated and a resin polymerization reaction is performed; a stirring part installed inside the reactor to agitate the resin; and a discharge port located at the lower portion of the reactor and provided with a plurality of discharge openings having an opening diameter within a range of 3/80 to 10/80 of the diameter of the discharge port.

Abstract: A polymerization reaction device of a high viscosity resin includes a cylindrical reactor having an inlet formed at an upper part and a discharge port formed at a lower part; and an impeller rotatably arranged inside the reactor and configured to mix materials in the reactor. The materials in the reactor are mixed by the impeller and polymerized into the high viscosity resin, and the polymerized high viscosity resin is discharged to an outside of the reactor through the discharge port by applying an inert gas. A ratio of a diameter of the discharge port to a diameter of the reactor may be set such that 80% or more of the high viscosity resin is discharged from the reactor from a time point when the applying of the inert gas starts to a time point when the inert gas reaches the discharge port.

Abstract: A method for manufacturing a zero-valent nickel compound, the method comprising supplying a nickel(II) source to a first continuous reactor; supplying a diene-based compound to the first continuous reactor; supplying a reducing agent to the first continuous reactor; and conducting a reaction of the nickel(II) source, the diene-based compound and the reducing agent in the first continuous reactor, and a method for manufacturing a polymer using a nickel complex obtained by reacting the zero-valent nickel compound and a ligand are provided.

Abstract: The present invention relates to a modification polymerization initiator and a method for preparing the same, and the modification polymerization initiator includes a derived unit from a compound represented by Formula 1 and may include various functional groups in a molecule, and thus, may initiate polymerization reaction and introduce a functional group into a polymer chain at the same time. In addition, the preparation method according to the present invention may prepare the modification polymerization initiator with high purity in high yield.

Abstract: The present invention relates to a method for preparing a modification polymerization initiator with a high conversion ratio by minimizing side reactions. According to the method for preparing a modification polymerization initiator, a modification polymerization initiator which may easily initiate polymerization and provide a polymer with a functional group having affinity with a filler, may be prepared. Particularly, by performing the method using a continuous reactor, the production of by-products may be decreased, and as a result, the conversion ratio may be increased and a modification polymerization initiator with high purity may be prepared in a high yield.

Abstract: The present invention relates to a modified polymerization initiator for a conjugated diene-based polymer, and a modified conjugated diene-based polymer including a functional group derived from the modified polymerization initiator.

Abstract: The present invention relates to a modification polymerization initiator and a method for preparing the same, and the modification polymerization initiator includes a derived unit from a compound represented by Formula 1 and may include various functional groups in a molecule, and thus, may initiate polymerization reaction and introduce a functional group into a polymer chain at the same time.

Abstract: A polymerization initiator composition includes isomers of the polymerization initiator, thereby preventing instability and inertness of the polymerization initiator and physical property degradation of the SSBR, minimizing by-products and unreacted materials, and remarkably improving a conversion ratio. In addition, when the polymerization initiator composition according to the present invention is used, there is no need to add a polar additive separately upon polymer polymerization, since the polar additive is already added at the time of preparing the polymerization initiator. Further, the polymer initiator composition has high polarity so that the hydrophobic SSBR and the hydrophilic silica can be effectively dispersed.

Abstract: An method for preparing an anion polymerization initiator, a device for preparing the same and an anion polymerization initiator prepared therefrom are provided. And the method for preparing an anion polymerization initiator according to present invention is characterized in that an amine compound of Formula 1 and/or Formula 2; an organometallic compound; and/or a conjugated diene compound are introduced in the form of a solution and reacted.

Abstract: The present invention relates to a modification polymerization initiator and a method for preparing the same, and the modification polymerization initiator includes a derived unit from a compound represented by Formula 1 and may include various functional groups in a molecule, and thus, may initiate polymerization reaction and introduce a functional group into a polymer chain at the same time.

Abstract: The present invention relates to a modification polymerization initiator and a method for preparing the same, and the modification polymerization initiator includes a derived unit from a compound represented by Formula 1 and may include various functional groups in a molecule, and thus, may initiate polymerization reaction and introduce a functional group into a polymer chain at the same time. In addition, the preparation method according to the present invention may prepare the modification polymerization initiator with high purity in high yield.

Abstract: The present invention relates to a method for preparing a modification polymerization initiator with a high conversion ratio by minimizing side reactions. According to the method for preparing a modification polymerization initiator, a modification polymerization initiator which may easily initiate polymerization and provide a polymer with a functional group having affinity with a filler, may be prepared. Particularly, by performing the method using a continuous reactor, the production of by-products may be decreased, and as a result, the conversion ratio may be increased and a modification polymerization initiator with high purity may be prepared in a high yield.

Abstract: The present invention relates to a modified polymerization initiator for a conjugated diene-based polymer, and a modified conjugated diene-based polymer including a functional group derived from the modified polymerization initiator.

Abstract: A polymerization initiator composition includes isomers of the polymerization initiator, thereby preventing instability and inertness of the polymerization initiator and physical property degradation of the SSBR, minimizing by-products and unreacted materials, and remarkably improving a conversion ratio. In addition, when the polymerization initiator composition according to the present invention is used, there is no need to add a polar additive separately upon polymer polymerization, since the polar additive is already added at the time of preparing the polymerization initiator. Further, the polymer initiator composition has high polarity so that the hydrophobic SSBR and the hydrophilic silica can be effectively dispersed.

Abstract: A method for preparing an anionic polymerization initiator, a device for manufacturing the same, and an anionic polymerization initiator prepared therefrom is provided. And the method for preparing an anionic polymerization initiator according to the present invention is characterized in that in a continuous reactor an amine compound of Formula 1 and/or Formula 2; an organometallic compound; and/or a conjugated diene compound are introduced in the form of a solution and reacted.

Abstract: A method for preparing an anionic polymerization initiator, a device for manufacturing the same, and an anionic polymerization initiator prepared therefrom is provided. And the method for preparing an anionic polymerization initiator according to the present invention is characterized in that in a continuous reactor an amine compound of Formula 1 and/or Formula 2; an organometallic compound; and/or a conjugated diene compound are introduced in the form of a solution and reacted.