Expandable functional TFE copolymer fine powder, the expandable functional products obtained therefrom and reaction of the expanded products

摘要

A functional TFE copolymer fine powder is described, wherein the TFE copolymer is a polymer of TFE and at least one functional comonomer, and wherein the TFE copolymer has functional groups that are pendant to the polymer chain. The functional TFE copolymer fine powder resin is paste extrudable and expandable. Methods for making the functional TFE copolymer are also described. The expanded functional TFE copolymer material may be post-reacted after expansion.

主权项

1. A functional tetrafluoroethylene (TFE) copolymer fine powder resin comprising:
a functional TFE core-shell copolymer comprising:
a core comprising a polymer chain of TFE and at least one comonomer having a functional group pendant to the polymer chain; anda shell consisting of TFE monomers, wherein the at least one comonomer having a functional group is present in the copolymer an amount between 0.01 mol % and 5 mol % of the functional TFE core-shell copolymer, wherein said at least one comonomer having a functional group is selected from a fluorinated monomer and a perfluorinated monomer, and wherein said functional group is selected from nitrile, aldehyde, carboxylic acid or salt, ester, amine, amide, carbonyl halide, sulfonyl halide, sulfonic acid or salts thereof, sulfonamide, sulfonimide, anhydride, sulfide, phosphonic acid or salts thereof, hydroxy (alcohol), sulfate esters, phosphate esters, or isocyanate.