Patent ID: 9488310
Filing Date: 2016-11-08
CPC Classification: B32B,F16L,Y10T

Claim Text:
1. A pipe- or tube-shaped article having an innermost layer wherein the innermost layer has a thickness of about 0.001 to about 102 mm and comprises a polyolefin; the polyolefin comprises repeat units derived from ethylene and 5 to 50 wt %, based on the total weight of the polyolefin, of an α-olefin having 3 to 20 carbons, and has a density of 0.90 g/cc (ASTM D-792) or less; and the innermost layer does not comprise an ionomer or an α,β-ethylenically unsaturated carboxylic acid or anhydride grafted to a parent polyolefin, wherein the article is abrasion-resistant article; the polyolefin has a density of about 0.88 g/cc or less; the α-olefin contains from 3 to 10 carbons; and the α-olefins are selected from the group consisting of propene, 1-butene, 3-methyl-1-butene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-octadecene, 3-cyclohexyl-1-propene, vinyl cyclohexane.