公开(公告)号：US20210371634A1

公开(公告)日：2021-12-02

申请号：US16770679

申请日：2018-11-05

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Narayanaswami Dharmarajan ,  Scott H. Loyd ,  Milind Balwant Joshi

IPC: C08L23/16

Abstract: Disclosed herein is a composition comprising from 5 to 20 parts by weight per hundred parts by weight rubber (phr) of a propylene-α-olefin-diene (PEDM) terpolymer comprising 1 to 10 wt % diene, 5 to 40 wt % α-olefin, and 15 to 85 wt % propylene, said wt % based on the weight of the PEDM terpolymer; and from 80 to 95 phr of an ethylene-based copolymer comprising ethylene, one or more C3 to C12 α-olefins, and, optionally, one or more dienes; wherein the amount of ethylene content of the ethylene-based copolymer (in wt % on the basis of total weight of the ethylene-based copolymer) is greater than the amount of α-olefin content of the PEDM terpolymer (in wt % on the basis of total weight of the PEDM terpolymer).

公开(公告)号：US20230250268A1

公开(公告)日：2023-08-10

申请号：US18015565

申请日：2021-07-16

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Scott H. Loyd ,  Milind Balwant Joshi ,  Xiao Bo Peng ,  Felix Manuel Zacarias ,  Narayanaswami Dharmarajan ,  Rainer Kolb ,  David William Abmayr ,  Zhifeng Bai

IPC: C08L23/16 ,  B32B1/08 ,  B32B5/02 ,  B32B25/04 ,  C08K3/04

CPC classification number: C08L23/16 ,  B32B1/08 ,  B32B5/02 ,  B32B25/042 ,  C08K3/04 ,  B32B2262/00 ,  B32B2305/18 ,  B32B2597/00

Abstract: An elastomeric composition suitable for use in layered articles like hoses and belts may include: 5 phr to 80 phr of a PEDM terpolymer comprising 55 wt % to 95 wt % propylene, 2.5 wt % to 40 wt % α-olefin, and 0.05 wt % to 25 wt % diene and having Mooney viscosity (ML(1+4)) of 5 MU to 90 MU; 20 phr to 95 phr of an ethylene-based copolymer selected from: (a) a crystalline ethylene-based copolymer comprising 60 wt % to 95 wt % ethylene, 0 wt % to 10 wt % of one or more dienes, and 5 wt % to 40 wt % C3 to C12 α-olefin, (b) an amorphous ethylene-based comprising 40 wt % to 59 wt % ethylene, 0 wt % to 10 wt % of one or more dienes, and 40 wt % to 60 wt % C3 to C12 α-olefin, and (c) a combination of (a) and (b); and 10 phr to 200 phr of a process oil.