Lg Chem, Ltd

Dong Hyun Jo

Won Hee Kim

Gyeong Shin Choi

Seung Young Park

Hyun Taek Oh

Jin Kyu Lee

Jin Soo Lee

Jin Woo Lee

Jeong Seok Lee

Seong Beom Heo

Jin Hong Lee

Woo Sung Hwang

Ji Hyun Choi

Jeong Sik Kim

Hye Mi Kim

Hee Jeong Kim

Soohyun Kim

Dobeen Hwang

Dongmin Kang

Suree Kim

Junho Chung

Hyori Kim

The present invention relates to a catalyst composition including an oxonium ion-based catalyst represented by the following Formula 1, and an additive, and a method for preparing polyisobutene using the same:

Catalyst composition and method for preparing polyisobutene using the same

The present invention relates to an organic borate-based catalyst including a compound represented by the following Formula 1 and a hydroxyl group-containing compound, a method for preparing an isobutene oligomer using the same and an isobutene oligomer prepared thereby: wherein R, Rto R, o, p, q and r are described therein.

Organic borate-based catalyst, method for preparing isobutene oligomer using the same and isobutene oligomer prepared thereby

A method for separating polybutene, the method including: (1) introducing a polybutene solution into a distillation column, the solution including polybutene, a halogenated hydrocarbon solvent, and a non-polar hydrocarbon solvent and having a viscosity of 1 cp to 50 cp measured at 25° C. using a rotational viscometer; (2) collecting an upper stream including the halogenated hydrocarbon solvent and a portion of the non-polar hydrocarbon solvent from an upper portion of the distillation column, and collecting a lower stream including the polybutene and a remaining portion of the non-polar hydrocarbon solvent from a lower portion of the distillation column, where the lower stream has a viscosity of 10 cp to 150 cp; and (3) separating the remaining portion of the non-polar hydrocarbon solvent and the polybutene from the lower stream.

Method for separating polybutene

The present invention provides a method for preparing a polybutene oligomer including a step of oligomerizing a polymerization solution including a halogenated hydrocarbon solvent, a nonpolar hydrocarbon solvent and an isobutene monomer in the presence of an organometal catalyst.

Method for preparing polybutene oligomer

The present invention provides an organometal catalyst having a cationic metal complex and a borate-based bulky anion, where the metal is one or more selected from the group consisting of metals in group 13, a method for preparing the same, and a method for preparing an oligomer or a polymer using the same.

Cationic metal complex, organometal catalyst having borate-based bulky anion, method for preparing the same, and method for preparing oligomer or polymer using the same

The present invention provides a method for preparing a transition metal complex, including a step of preparing a dispersion including a transition metal salt or alkoxide, and a coordinating solvent; and a step of reacting an organic borate-based compound containing a carbon-based, silyl-based or amine-based cation and a borate-based bulky anion, with the dispersion, wherein the transition metal is one or more selected from the metals in group 7 to group 12.

Method for preparing transition metal complex

The present invention provides a method for preparing a butene oligomer including a step of oligomerizing a polymerization solution including a halogenated hydrocarbon solvent, a nonpolar hydrocarbon solvent and an isobutene monomer in the presence of an organometal catalyst.

Method for preparing butene oligomer

The present invention provides an organometal catalyst having a cationic transition metal complex and a borate-based bulky anion, a method for preparing the same, and a method for preparing an oligomer using the same.

Organometal catalyst having cationic transition metal complex and borate-based bulky anion, method for preparing the same, and method for preparing oligomer using the same

Growing community of inventors

Daejeon, South Korea

Dong Hyun Jo