METHOD FOR PREPARING ETHYLENE/ALPHA-OLEFIN COPOLYMER

• Main Authors: LEE RAI HA, MIN KYUNG DAE, HONG YOUN JIN, KIM HO SEOK, JANG JI HOON, CHAE BYUNG HUN, HA DAL YONG
• Format: Patent
• Language: English; Korean
• Published: 28.05.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; SEMICONDUCTOR DEVICES; THEIR PREPARATION OR CHEMICAL WORKING-UP

본 발명에 따르면 용매, 에틸렌 및 올레핀 단량체를 포함하는 반응물 및 촉매를 중합 반응기에 공급하여 중합시키는 1차 중합 단계 및 상기 1차 중합 단계 후에 2차 중합 단계를 포함하고, 상기 2차 중합 단계는 1차 중합 단계의 중합온도보다 10℃ 내지 50℃ 더 높은 온도에서 수행하는 것인, 에틸렌-알파-올레핀 공중합체 제조방법이 제공된다. According to the present invention, provided is a method for preparing an ethylene/alpha-olefin copolymer, comprising: a primary polymerization step in which a reactant including a solvent, ethylene, and an olefin monomer, and a catalyst are supplied to a polymerization reactor so as to polymerize same; and a secondary polymerization step after the primary polymerization step, wherein the secondary polymerization step is performed at a temperature 10°C to 50°C higher than the polymerization temperature of the primary polymerization step.