METHOD FOR PRODUCING PROPYLENE BLOCK COPOLYMER Russian patent published in 2018 - IPC C08F4/654 C08F297/08 C08F210/06

Abstract RU 2660441 C2

FIELD: chemistry.

SUBSTANCE: method comprises copolymerisation of propylene and α-olefin in the presence of a catalyst which comprises (i) a solid catalyst component which includes titanium, magnesium, halogen and a compound represented by R¹O-C(=O)-O-Z-OR², and (II) a compound represented by R³_pAlQ_3-p, to obtain a propylene-based block copolymer.

EFFECT: process for the preparation of a propylene-based block copolymer, which provides excellent olefin polymerisation activity and hydrogen activity (hydrogen response) during polymerisation and a propylene-based block copolymer is obtained, which exhibits a high melt flow rate (MFR), high stereoregularity and excellent stiffness.

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RU 2 660 441 C2

Authors

Sugano Tosikhiko

Khosaka Motoki

Uodzumi Tosiya

Dates

2018-07-06—Published

2014-02-05—Filed