CONTINUOUS SOLUTION POLYMERIZATION PROCESS

• Main Authors: SIBTAIN FAZLE, KHAKDAMAN HAMIDREZA, TAYLOR KENNETH, CHISHOLM P. SCOTT, DOBBIN CHRISTOPHER
• Format: Patent
• Language: English; Korean
• Published: 28.06.2017
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

본 발명은 에틸렌 공중합체 산물이 향상된 색 지수를 갖는, 예컨대 산물이 더 높은 백색도(백색도 지수(WI)) 및 더 낮은 황색도(황색도 지수(YI))를 갖는, 연속 용액 중합법에 관한 것이다. 산물의 색은 선택된 용액 5가지 중합 반응 조건을 조정하여 향상시켰다. 개시된 에틸렌 공중합체 산물은 비교용 폴리에틸렌 조성물에 비해 향상된 색을 보유한다. This disclosure relates to a continuous solution polymerization process wherein production rate is increased. Process solvent, ethylene, optional comonomers, optional hydrogen and a single site catalyst formulation are injected into a first reactor forming a first ethylene interpolymer. Process solvent, ethylene, optional comonomers, optional hydrogen and a heterogeneous catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors may be configured in series or parallel modes of operation. Optionally, a third ethylene interpolymer is formed in an optional third reactor, wherein an optional heterogeneous catalyst formulation may be employed. In a solution phase, the first, second and optional third ethylene interpolymers are combined, the catalyst is deactivated, the solution is passivated and following a phase separation process an ethylene interpolymer product is recovered.