METHOD FOR PREPARING ETHYLENE/ALPHA-OLEFIN COPOLYMER

• Main Authors: CHAE, Byung Hun, HA, Dal Yong, JANG, Ji Hoon, HONG, Younjin, LEE, Rai Ha, MIN, Kyung Dae, KIM, Ho Seok
• Format: Patent
• Language: English; French; Korean
• Published: 30.05.2024
• 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

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. La présente invention concerne un procédé de préparation d'un copolymère d'éthylène/alpha-oléfine, comprenant : une étape de polymérisation primaire dans laquelle un réactif incluant un solvant, de l'éthylène et un monomère d'oléfine, et un catalyseur sont introduits dans un réacteur de polymérisation de façon à les polymériser ; et une étape de polymérisation secondaire après l'étape de polymérisation primaire, l'étape de polymérisation secondaire étant effectuée à une température de 10 °C à 50 °C supérieure à la température de polymérisation de l'étape de polymérisation primaire. 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.