Dl Chemical Co., Ltd.

Daelim Industrial Co., Ltd.

Byung Soon Chun

Sung Woo Kang

Soon Jae Kwon

Byung Keel Sohn

Jang Woo Lee

Seung Tack Yu

Young Jae Jun

Sung Ho Choi

Young Shin Jo

Hee Jun Lee

An embodiment of the present disclosure relates to a polyolefin polymer including a core portion and a shell portion, wherein the core portion has a density of 0.857 g/cmto 0.910 g/cm, the shell portion has a density of 0.890 g/cmto 0.940 g/cm, and the density of the shell portion is higher than that of the core portion, and a polymerization system and polymerization method of producing the same.

Polyolefin polymer and polyolefin polymerization system and method

Disclosed is an antistatic agent for a metallocene olefin polymerization process and a polymerization method using the same, by which discontinuity event due to sheeting or drooling occurring in the olefin polymerization process can be effectively reduced, enabling continuous operation for a long time, and the obtained final product can be applied to various applications including food contact use. The present disclosure includes an olefin polymerization method, which comprises forming a mixture in which an antistatic agent containing diglycerol oleate is mixed with a low molecular weight hydrocarbon, supplying the antistatic agent mixture and a metallocene-based catalyst composition comprising a metallocene catalyst and aluminoxane to two or more polymerization reactors, and polymerizing one or more alpha-olefins in the presence of the antistatic agent mixture and catalyst composition.

Olefin polymerization method using antistatic agent for metallocene olefin polymerization process

A method of olefin polymerization enables production of polyolefin with high productivity while suppressing sheeting or caking in the reactor. The method of olefin polymerization includes: feeding a circulating gas including at least one alpha-olefin and an inert gas into a reactor; polymerizing the alpha-olefin into a polyolefin in a reaction region in the reactor; and discharging the polyolefin from the reactor, which reactor consists of a cylindrical base section a positioned in the lower part thereof and a conical top section b positioned on the top of the cylindrical base section and having an open top. The inside of the reactor is divided into a reaction region A that is a fluidized bed region having an olefin polymerization occurring therein, and a free region B positioned on the top of the reaction region A and having solid polyolefin particles separated from the gas phase.

Olefin polymerization method

Growing community of inventors

Daejeon, South Korea

Byung Soon Chun