Patent ID: 8728600
Filing Date: 2014-05-20
Classification: B29C,B29D,B29K,B32B,C08F,C08J,C08L,C09D,F16L,Y10T

Abstract:
1. A pipe- or tube-shaped article having an innermost layer wherein the innermost layer has a thickness of about 3.2 to about 102 mm and comprises a grafted polyolefin, wherein the grafted polyolefin is the only polymer in the innermost layer; the grafted polyolefin is produced from a parent polyolefin comprising ethylene and an α-olefin with 3 to 20 carbons and grafted with about 0.005 to about 10 wt % of an α,β-ethylenically unsaturated carboxylic acid or anhydride; and the innermost layer does not comprise a tackifier.