ethylene-based interpolymer, composition, article and hollow tube

摘要

interpolymer based on ethylene, composition, article and hollow tube the invention provides an interpolymer based on ethylene comprising the following characteristics: (a) a density of 0.910 to 0.930 g / cm3; (b) a melt index (12) of 0.1 to 0.5 g / 10 min; and (c) a high density fraction in an atref (scbd) short chain branch distribution curve, eluting above 92 ° c, from more than 10 percent to less than 28 percent of the total scbd curve area by atref. the invention also provides a composition comprising an ethylene-based interpolymer comprising the following characteristics: (a) a density of 0.919 to 0.928 g / cm3; (b) a melt index (i2) of 0.1 to 0.8 g / 10 min; and (c) a high density fraction in an atref (scbd) short chain branch distribution curve, eluting above 92 ° c, from more than 10 percent to less than 28 percent of the total scbd curve area by atref. the invention also provides a hollow tube comprising at least one component formed by a composition comprising an ethylene-based interpolymer comprising the following characteristics: (a) a density of 0.919 to 0.928 g / cm3; (b) a melt index (i2) of 0.1 to 0.8 g / 10 min; and (c) a high density fraction in an atref (scbd) short chain branch distribution curve, eluting above 92 ° c, from more than 10 percent to less than 28 percent of the total scbd curve area by atref; and the tube has a hydrostatic design base (hdb) of at least 1000 psi at 23 ° c by the astm regression method d-2837.