The present invention relates to the field of polymer synthesis technology and discloses a polyethylene glycol composition with a multi-peak molecular weight distribution and its preparation method. The polyethylene glycol composition comprises a polyethylene glycol graft copolymer and a polyethylene glycol homopolymer. The polyethylene glycol graft copolymer contains at least the segments shown in formula (I') and formula (I“): Formula (I'): Formula (I”): wherein p represents the degree of polymerization. The polyethylene glycol composition of the present invention exhibits high molecular weight, low melt flow rate, and high toughness. It is suitable for standalone film blowing processing, with product strength and toughness meeting application requirements. Concurrently, the preparation method for this polyethylene glycol composition achieves high production efficiency through continuous processing on a twin-screw extruder, demonstrating significant practical value.
Country Code: CN
Application Number: CN202211002667.6
