公开(公告)号：US20200248046A1

公开(公告)日：2020-08-06

申请号：US16738694

申请日：2020-01-09

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Ling Ge ,  Jean-Roch H. Schauder ,  Jerome Sarrazin ,  Bastien Filliol ,  Jennifer J. Austin ,  Angela V. Carey ,  Ye Chun Zhou

IPC: C09J123/14

Abstract: In an embodiment, an adhesive composition includes (a) a propylene-based elastomer comprising at least 60 wt % of propylene-derived units and from 2-40 wt % of a C2 and/or a C4-C20 α-olefin-derived units based on a total weight of the propylene-based elastomer, and having a melting temperature of less than 110° C., a heat of fusion of less than 75 J/g, and a weight average molecular weight (Mw) of less than 100,000 g/mol; (b) a polyethylene wax having a density of greater than 0.940 g/cm3, a Mw of from 3,000 g/mol to 30,000 g/mol, and a crystallization temperature of greater than 100° C.; (c) a tackifier; and (d) optionally a polypropylene wax. In another embodiment, an adhesive composition includes 70-80 wt % of a propylene-based elastomer; 10 wt % of a polyethylene wax; 0-10 wt % of a polypropylene wax; and 10 wt % of a tackifier based on a total weight of the adhesive composition.