TWO-STAGE PROCESS FOR PRODUCING POLYPROPYLENE COMPOSITIONS
摘要
A process for polymerizing propylene in the presence of a polymerization catalyst by copolymerizing propylene with a comonomer selected from the group of ethylene and C4- C10 alpha-olefins in two polymerization stages. The first polymerization stage is conducted in a loop reactor and the second polymerization stage in a gas phase reactor. The polymer produced in first polymerization stage has a higher melt flow rate and a lower content of comonomer units than the final polymer mixture. The process can be operated with a high throughput and catalyst productivity.
申请公布号
WO2014173536(A1)
申请公布日期
2014.10.30
申请号
WO2014EP01075
申请日期
2014.04.22
申请人
ABU DHABI POLYMERS COMPANY LIMITED (BOROUGE);BOREALIS AG