公开(公告)号：US20210155790A1

公开(公告)日：2021-05-27

申请号：US16970233

申请日：2019-02-15

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Klaus Hintzer ,  Harald Kaspar ,  Jens Schrooten ,  Tilman C. Zipplies ,  Florian Jochum ,  Michael C. Dadalas ,  Tatsuo Fukushi ,  Naiyong Jing ,  Karl D. Weilandt

IPC: C08L27/18 ,  C08L27/20 ,  C08F216/14 ,  C08F2/22 ,  C08K3/04

Abstract: A tetrafluoroethene copolymer having a melting point of from about 240° C. to 325° C., a melt flow index (MFI at 372° C. and 5 kg load) of 0.5-80 grams/10 minutes and having at least 70% by weight of units derived from tetrafluoroethene and further comprising units derived from at least one perfluorinated alkyl allyl ether (PAAE) comonomer corresponding to the general formula: CF2═CF—CF2—O—Rf (I) where Rf is a perfluorinated alkyl residue having from 1 to 10 carbon atoms and wherein the alkyl chain of the residue may be interrupted once or more than once by an oxygen atom and further, optionally, comprising units derived from perfluoromethyl vinyl ether (PMVE), perfluoroethyl vinyl ether (PEVE) and a combination thereof and wherein the content of units CA derived PAAEs and, optionally, PMVE, PEVE or a combination thereof, is at least 1.0% by weight.