Polyethylene composition for injection molding
AssigneeBasell Polyolefine GmbH
InventorBernd Hoecker
Life of this patent
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Abstract
A polyethylene composition having density from 0.943 to 1.1 g/cm3, comprising: A) carbon black, or a UV stabilizer, or a mixture of carbon black and a UV stabilizer; B) a polyethylene comprising copolymers of ethylene with 1-alkenes, or mixtures of ethylene homopolymers and said copolymers of ethylene with 1-alkenes, which polyethylene has molar mass distribution width (MWD) Mw/Mn of from 7 to 15, density of from 0.942 to 0.954 g/cm3, a weight average molar mass Mw of from 20,000 g/mol to 500,000 g/mol, a MIE of from 1.0 to 3.0 g/10 min, a MIF of from 100 to 200 g/10 min, and a ratio MIF/MIE of from 40 to 50.
Claims15
A polyethylene composition having density from 0.943-1.1 g/cm3, comprising:
- A) carbon black, or a UV stabilizer, or a mixture of carbon black and a UV stabilizer;
- B) a polyethylene comprising copolymers of ethylene with 1-alkenes, or mixtures of ethylene homopolymers and copolymers of ethylene with 1-alkenes, where the polyethylene has a molar mass distribution width (MWD) Mw/Mn of from 7-15, a density of from 0.942-0.954 g/cm3, determined according to ISO 1183 at 23° C., a weight average molar mass Mw of from 20,000 g/mol-500,000 g/mol, a MIE of from 1.0-3.0 g/10 min, a MIF of from 100-200 g/10 min, and a ratio MIF/MIE of from 40-50, where MIE is the melt flow rate at 190° C. with a load of 2.16 kg and MIF is the melt flow rate at 190° C. with a load of 21.6 kg, both determined according to ISO 1133.
Dependencies are inferred from the claim text.