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AssigneeSabic Global Technologies B.V.
InventorsAnantharaman Dhanabalan, Sadasivam Gopalakrishnan
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A polyethylene composition having increased environmental stress crack resistance (ESCR) is comprised of a polymer blend of a high density polyethylene (HDPE) and a polycarbonate-siloxane copolymer. The polycarbonate-siloxane copolymer is present in the polymer blend in an amount of from 0.5 wt. % to 15 wt. % by total weight of the polymer blend. In a method of forming a polyethylene composition having increased ESCR, a HDPE is modified by combining the HDPE with a polycarbonate-siloxane copolymer in a polymer blend, the polycarbonate-siloxane copolymer being present in an amount of from 0.5 wt. % to 15 wt. % by total weight of the polymer blend. The polymer blend can be formed into an article of manufacture, such as a bottle cap.
A polyethylene composition having increased environmental stress crack resistance, the composition comprising a polymer blend of a high density polyethylene (HDPE) and a polycarbonate-siloxane copolymer present in an amount of from 7 wt. % to 15 wt. % by a total weight of the polymer blend, wherein the high density polyethylene is present in an amount of 85 wt. % to 93 wt. % by the total weight of the polymer blend.
A method of forming a polyethylene composition having increased environmental stress crack resistance, the method comprising modifying a high density polyethylene (HDPE) by combining the HDPE with a polycarbonate-siloxane copolymer in a polymer blend, the polycarbonate-siloxane copolymer being present in an amount of from 7 wt. % to 15 wt. % by total weight of the polymer blend, wherein the high density polyethylene is present in an amount of 85 wt. % to 93 wt. % by the total weight of the polymer blend.
A polyethylene composition having increased environmental stress crack resistance, the composition comprising a polymer blend of:
An article comprising a polyethylene composition having increased environmental stress crack resistance, the composition comprising a polymer blend of a high density polyethylene (HDPE) and a polycarbonate-siloxane copolymer present in an amount of from 7 wt. % to 15 wt. % by a total weight of the polymer blend, wherein the article is a cap or lid.
Dependencies are inferred from the claim text.