公开(公告)号：US20220251362A1

公开(公告)日：2022-08-11

申请号：US17728367

申请日：2022-04-25

申请人： Celanese International Corporation

发明人： Antonios K. Doufas ,  Krishnan Anantha Narayana Iyer ,  Eric P. Jourdain ,  Michael J. Goncy ,  Kelly Kirkendall ,  Katya N. Reyna

IPC分类号： C08L23/16

摘要： In an embodiment, a thermoplastic vulcanizate (TPV) composition is provided. The TPV composition includes a thermoplastic polyolefin; and an ethylene based copolymer rubber, wherein the ethylene based copolymer rubber has: a Mw of from 500,000 g/mol to 3,000,000 g/mol, a Mw/Mn of 4.0 or lower, and a g′vis of 0.90 or greater. In another embodiment, a TPV composition includes a thermoplastic phase and an ethylene-propylene-diene terpolymer, wherein the thermoplastic vulcanizate composition has: a hardness of from 20 Shore A to 60 Shore D; and a stress relaxation slope of −1 to −5 (l/min) as measured by an Elastocon stress relaxation instrument.

公开(公告)号：US11312847B2

公开(公告)日：2022-04-26

申请号：US16981345

申请日：2019-03-29

申请人： Celanese International Corporation

发明人： Antonios K. Doufas ,  Krishnan Anantha Narayana Iyer ,  Eric P. Jourdain ,  Michael J. Goncy ,  Kelly Kirkendall ,  Katya N. Reyna

IPC分类号： C08L23/16 ,  C08L23/30 ,  C08L23/36 ,  C08L23/32

摘要： In an embodiment, a thermoplastic vulcanizate (TPV) composition is provided. The TPV composition includes a thermoplastic polyolefin; and an ethylene based copolymer rubber, wherein the ethylene based copolymer rubber has: a Mw of from 500,000 g/mol to 3,000,000 g/mol, a Mw/Mn of 4.0 or lower, and a g′vis of 0.90 or greater. In another embodiment, a TPV composition includes a thermoplastic phase and an ethylene-propylene-diene terpolymer, wherein the thermoplastic vulcanizate composition has: a hardness of from 20 Shore A to 60 Shore D; and a stress relaxation slope of −1 to −5 (1/min) as measured by an Elastocon stress relaxation instrument.