이중양식 폴리에틸렌 수지 및 상기 수지로부터 제조된 파이프

• Main Authors: SUKHADIA ASHISH M, ROHATGI VIVEK, LANIER ELIZABETH M, INN YONGWOO
• Format: Patent
• Language: Korean
• Published: 07.10.2020
• Subjects: BLASTING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THEIR PREPARATION OR CHEMICAL WORKING-UP; THERMAL INSULATION IN GENERAL; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WEAPONS

일반적으로 0.94 g/cm3 이상의 밀도, 4 내지 20 g/10분의 고부하 용융 지수, 190 ℃에서 20,000 내지 400,000 kPa-sec의 제로 전단 점도, 및 190 ℃에서 225 내지 3000초의 완화 시간을 특징으로 하는 에틸렌계 중합체가 본원에 개시된다. 이들 에틸렌 중합체는 광범위한 분자량 분포 지글러-촉매화된 수지를 퍼옥시드 처리하여 제조될 수 있고, 큰 직경의 두꺼운 벽 파이프 및 다른 최종 물품에 사용될 수있다. Disclosed herein are ethylene-based polymers generally characterized by a density of at least 0.94 g/cm3, a high load melt index from 4 to 20 g/10 min, a zero-shear viscosity at 190° C. from 20,000 to 400,000 kPa-sec, and a relaxation time at 190° C. from 225 to 3000 sec. These ethylene polymers can be produced by peroxide-treating a broad molecular weight distribution Ziegler-catalyzed resin, and can be used in large diameter, thick wall pipes and other end-use applications.