Thermoplastic composition comprising polyethylene, manufacture and use thereof
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United States of America Patent
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Apr 2, 2019
Grant Date -
Mar 23, 2017
app pub date -
Mar 4, 2015
filing date -
Mar 12, 2014
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Abstract
Thermoplastic composition, comprising at least components (i) to (iii): (i) from 10 to 50% by weight of a combination of at least one first ethylene polymer (A) and at least one second ethylene polymer (B), wherein (A) is selected such as to exhibit (a) a density of from 0.87 g/cm3-0.90 g/cm3 as determined according to ASTM D792; (β) a melt flow index of from 0.3 g/10 min-5 g/10 min as determined according to ASTM D1238 (190° C./2.16 kg); (γ) a flexural modulus of from 5 to 60 MPa measured according to ASTM D790; and wherein (B) is selected such as to exhibit (a) a density of from 0.90 g/cm3-0.92 g/cm3 as determined according to ASTM D792; (β) a melt flow index of from 0.3 g/10 min-10 g/10 min as determined according to ASTM D1238 (190° C./2.16 kg); (γ) a flexural modulus which is higher than that of (A); (ii) from 35-90% by weight of inorganic particles as filler; (iii) from 0.05-20% by weight of a liquid (at 23° C.) as a plasticizer for the at least one first ethylene polymer (A) and/or the at least one second ethylene polymer (B); the % by weight of components (i) to (iii) being based on the total weight of the composition.
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