Patent Number: 6,166,142

Title: Adhesive compositions based on blends of grafted metallocene catalyzed and polar ethylene copolymers

Abstract: Polyethylene-based adhesive compositions which contain as little as 5 weight percent, and up to 35 weight percent of an acid-grafted metallocene polyethylene have superior peel strength to comparable compositions containing an acid grafted non-metallocene and EVA or EMA polyethylene. Compositions where the acid-grafted metallocene polyethylene component is based on a metallocene polyethylene having a melt-flow ratio of less than 6.53 and an Mw/Mn of greater than the melt flow ratio less 4.63 are as good adhesive compositions as those based on metallocene resins falling outside these parameters.

Inventors: Zhang; David Dawei (Wilmington, DE), Lee; I-Hwa (Wilmington, DE), Tanny; Stephen Robert (Newark, DE)

Assignee: E. I. du Pont de Nemours and Company

International Classification: B32B 27/32 (20060101); C09J 151/00 (20060101); C09J 151/06 (20060101); C09J 123/08 (20060101); C09J 123/00 (20060101); C08L 23/00 (20060101); C08L 23/16 (20060101); C08L 51/06 (20060101); C08L 51/00 (20060101); C08L 033/02 (); C08L 033/04 (); C08L 033/06 (); C08L 035/02 (); C08L 043/00 ()

Expiration Date: 12/26/2017