Polyethylene additive
AssigneeNOVA Chemicals (International) S.A.
InventorsOwen Lightbody, Norman Dorien Joseph Aubee, P. Scott Chisholm, Tony Tikuisis
Life of this patent
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Abstract
A new additive for plastics (for example, polyethylene) is prepared by reacting a fatty acid ester of glycerol (such as glycerol monostearate) with a source of a reactive divalent metal selected from zinc, calcium, and magnesium. In an embodiment, Zinc oxide is the reactive divalent metal and the reaction is conducted in the presence of an acid such as zinc acetate. In one embodiment, a molar excess of zinc oxide (compared to the fatty acid ester) is used. The additive is suitable for use in the preparation of injection molded parts, rotomolded parts, and films.
Claims20
A polyethylene additive prepared by the reaction of
- a) a fatty acid ester of glycerol;
- with
- b) a divalent metal selected from zinc, calcium, and magnesium.
A process to prepare a polyethylene additive comprising reacting a fatty acid ester with a divalent metal.
Dependencies are inferred from the claim text.