Abstract: Provided is a rubber mixture, which includes a unit structure derived from a first conjugated diene-based monomer and is functionalized with at least one of the compounds represented by Formulas 1 to 6; and a second low molecular weight rubber polymer, which includes a unit structure derived from a second conjugated diene-based monomer and is functionalized with at least one of the compounds represented by Formulas 1 to 6.

Abstract: Disclosed is a binder composition for an all-solid-state battery including a conjugated diene-based rubber polymer and a solvent, wherein a content of a cis bond in the conjugated diene-based rubber polymer is 90% by weight or more.

Abstract: Disclosed are a rubber polymer including a unit structure derived from a conjugated diene-based monomer and at least one of compounds represented by Chemical Formula 1 to Chemical Formula 4, a method of preparing the same, and a rubber composition including the same.

Abstract: A functional styrene-butadiene copolymer is disclosed. More specifically, the copolymer is prepared by radical polymerization of a styrene monomer, a butadiene monomer and an epoxy acrylate monomer in an emulsion state and ring-opening of the resultant styrene-butadiene-epoxy acrylate copolymer. When blended with silica, the disclosed copolymer provides excellent wet stopping performance and superior wear resistance. Therefore, it can be usefully applied for industrial materials including fuel-efficient tires, snow tires, belts, hoses, etc.

Abstract: A method for controlling the degree of branching of a 1,4-cis polybutadiene when preparing the 1,4-cis polybutadiene from 1,3-butadiene monomers in a nonpolar solvent using a catalyst system containing a an organonickel compound, alkylaluminum compound, and a boron fluoride complex is carried out by controlling the catalyst combination and a pretreatment condition. The method allows easy control of the degree of branching of the 1,4-cis polybutadiene without having to control the polymerization temperature or to add additional additives. As a result, the processability and the physical properties of the polymer can be optimized.

Abstract: Disclosed are 1,4-polybutadiene functionalized with an aromatic organosulfur compound, providing improved processability due to decreased Mooney viscosity and providing improved feel on hitting and flying performance due to decreased compression and increased restitution when used to prepare a golf ball core, and a composition for the preparation of a golf ball core including the same.

Abstract: A functional styrene-butadiene copolymer is disclosed. More specifically, the copolymer is prepared by radical polymerization of a styrene monomer, a butadiene monomer and an epoxy acrylate monomer in an emulsion state and ring-opening of the resultant styrene-butadiene-epoxy acrylate copolymer. When blended with silica, the disclosed copolymer provides excellent wet stopping performance and superior wear resistance. Therefore, it can be usefully applied for industrial materials including fuel-efficient tires, snow tires, belts, hoses, etc.

Abstract: The present invention relates to a process for the preparation of a hydrogenated conjugated diene-based polymer comprising effectively removing the residues including the titanium-based catalyst, a reducing agent, etc., remaining in the conjugated diene-based polymer solution after hydrogenation by extraction from an aqueous layer through separation using an organic acid, alcohol and water.

Abstract: This invention relates to a process for selectively hydrogenating the unsaturated double bonds of conjugated diene units of a homopolymer or copolymer. By using a highly active novel homogeneous organo titanium catalyst represented by formula (I) and lithium hydride (LiH) prepared in solution of organo lithium compound and hydrogen as a reducing agent, a polymer could be hydrogenated with significantly high yield and good reproducibility. In addition, this invention is characterized by a novel method in that when a copolymer containing a conjugated diene and vinyl-substituted aromatic hydrocarbon, the unsatured double bonds of conjugated diene units are selectively hydrogenated.

Abstract: The present invention relates to a process for polymer hydrogenation that includes: polymerizing or copolymerizing at least one conjugated diene in a hydrocarbon solvent using an organic alkali metal polymerization initiator to generate a living polymer; adding a terminating agent selected from amines, esters, ketones, or halogen compounds to deactivate the active terminal of the living polymer; and selectively hydrogenating the conjugated diene polymer using at least one organotitanium compound and a lithium hydride, which is prepared from a reactor equipped with a high-speed injection nozzle and thereby precisely controlled in regard to particle diameter.

Abstract: The present invention relates to a process for polymer hydrogenation that includes: polymerizing or copolymerizing at least one conjugated diene in a hydrocarbon solvent using an organic alkali metal polymerization initiator to generate a living polymer; adding a terminating agent selected from amines, esters, ketones, or halogen compounds to deactivate the active terminal of the living polymer; and selectively hydrogenating the conjugated diene polymer using at least one organotitanium compound and a lithium hydride, which is prepared from a reactor equipped with a high-speed injection nozzle and thereby precisely controlled in regard to particle diameter.

Abstract: This invention relates to a method for the selective hydrogenation of the unsaturated double bonds in the conjugated diene units of a homopolymer or copolymer in the presence of a novel homogeneous organotitanium-based catalyst. Also, the process of this invention can demonstrate a high yield of hydrogenation and hydrogenation reproducibility using a novel catalyst, so prepared from a mixture consisting of a substituted or unsubstituted monocyclopentadienyl titanium compound expressed by the following formula 1 and lithium hydride derived from a reaction of both alkyl lithium and hydrogen in solution.

Abstract: A method for hydrogenating living polymers that include mainly conjugated double bond monomers and aromatic vinyl monomers. At least one conjugated diene compound is polymerized or copolymerized in an inert solvent by using a polymerization initiator of organic alkali metal. The produced polymer is contacted with hydrogen in the presence of a catalyst. The catalyst is formed of a cyclopentadienyl titanium compound represented by: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are independently selected from halogen groups, C.sub.1 -C.sub.8 alkyl groups, C.sub.1 -C.sub.8 alkoxy groups, C.sub.6 -C.sub.20 aryloxy groups, C.sub.6 -C.sub.20 cycloalkyl groups, silyl groups, and carbonyl groups. A cocatalyst is provided of alkoxylithium compound represented by:R.sub.4 O--Liwherein R.sub.4 is a hydrocarbon. This cocatalyst selectively hydrogenates the unsaturated double bonds in the conjugated diene units of the living polymer.

Abstract: There is provided a method for selectively hydrogenating a living polymer having olefinic double bonds. A monomer having at least one conjugated double bond, optionally together with an olefinic monomer, is polymerized in the presence of an alkyllithium polymerization initiator, to give a living polymer. This olefinic living polymer is reacted with a hydrocarbon compound, to give a deactivated living polymer and a hydrocarbon lithium compound. The double bonds within the conjugated dien units of the polymer are selectively hydrogenated in the presence of a monocyclopentadienyltitanium compound which is under the influence of the hydrocarbon lithium compound. The hydrocarbon, which acts as a deactivator of the living polymer, terminates the anion polymerization occurring due to an activated anion of the living polymer and thus, prevents the intermolecular cross-linking of the polymers so that the gelation of the polymers does not occur.

Abstract: There is provided a method for selectively hydrogenating living polymers having olefinic double bonds, in which the living polymers resulting from the polymerization initiated by alkyllithium compound are deactivated by contacting the polymerization terminators for a short time under a mild condition and hydrogenated in the presence of bis(cyclopentadienyl)titanium compound in high efficiency and high reproducibility without adjusting accurate molar ratio of the lithium compound to the titanium compound.