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US 10,479,882 B2Granted
Rotational moldable composition comprising polyethylene, and a blend of a pigment and a polyethylene copolymer
AssigneeTeknor Apex Company
InventorsJohn J. Wood, III, Charlie J. Allbritton, Troy F. Duckworth, Katherine A. Herrick
Life of this patent
Estimating the term…
Abstract
A preblend of one or more pigments and one or more polymers derived from ethylene monomers and α-olefin monomers when added to polyethylene unexpectedly results in high improvements in impact strength with regard to rotationally molded products as compared to the same products not blended with any preblend. The result is a cost effective, high impact resistant polyethylene that is a physical, dry color blend.
Claims21
A physical, dry color composition, comprising:
- a mixture of a preblend of a pigment-polyethylene copolymer, and polyethylene;
- said pigment-copolymer preblend derived from about 0.06 to about 0.90 parts by weight of one or more pigments and about 1 part by weight of one or more polyethylene-α-olefin copolymers, said amounts based upon about 100 parts by weight of said polyethylene.
Dependencies are inferred from the claim text.