Patent ID: 11898025
Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 14:
15. A method of forming a polyethylene composition having increased environmental stress crack resistance, the method comprising:
modifying a multimodal high density polyethylene (HDPE) by combining the multimodal HDPE with an additive of a polycarbonate-siloxane copolymer, and optionally at least one of a polyethylene glycol (PEG) having weight average molecular weight (Mw) of at least 2000, and a random block copolymer comprising two different saturated alkane blocks between two aromatic hydrocarbon blocks, the additive being present in the polymer blend in an amount of from 0.9 wt. % or less by weight of the polymer blend.