TETRAFLUOROETHYLENE COPOLYMERS HAVING SULFONYL GROUPS

    公开(公告)号:US20180030183A1

    公开(公告)日:2018-02-01

    申请号:US15550295

    申请日:2016-02-12

    Abstract: A copolymer having tetrafluoroethylene units and units independently represented by formula (I) in a range from 0.02 to 2 mole percent, based on the total amount of the copolymer. Rf is a linear or branched perfluoroalkyl group having from 1 to 8 carbon atoms and optionally interrupted by one or more —O— groups, each n is independently from 1 to 6, m is 0 or 1, and z is 0, 1, or 2. The copolymer has a melt flow index in a range from 20 grams per 10 minutes to 40 grams per 10 minutes and has in a range from 2 to 200 —SO2X groups per 106 carbon atoms and up to 100 unstable end groups per 106 carbon atoms. The copolymer can be extruded to make articles, such as insulated cables. A method of making the copolymer is also disclosed.

    BRANCHED FLUOROTHERMOPLASTS AND METHOD OF MAKING THE SAME

    公开(公告)号:US20210189031A1

    公开(公告)日:2021-06-24

    申请号:US16756261

    申请日:2018-10-23

    Abstract: Described herein is a fluorothermoplast with long chain branching and a method of making such a polymer using a modifier of the formula: F2C═CF(CF2)a(O)RfH wherein a is 0 or 1 and Rf is a linear or branched fluorinated alkylene group comprising 1 to 5 carbon atoms and optionally comprising at least one ether linkage and optionally comprising 1 or 2 hydrogen atoms. This fluorothermoplast may be processed through polymer melt processes, such as blow molding, injection molding, film extrusion, and wire extrusion. Preferably, said polymer contains structural units derived from tetrafluoroethylene and a perfluorinated olefin or ether, and comprises chain branching.

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