Abrasion-resistant fluoropolymer mixtures

Claim 1

An extruded tube produced from a mixture comprising (A) from 75 to 99% by weight of a fluorocarbon polymer, (B) from 1 to 25% by weight of an oxidized polyarylene sulfide which is a linear or branched polyarylene system having a molecular weight of from 4000 to 200,000 containing recurring units of the formula -- (Ar.sup.1).sub.d --X!.sub.o -- (Ar.sup.2).sub.i --Y!.sub.j -- Ar.sup.3).sub.k --Z!.sub.i -- (Ar.sup.4).sub.o --W!.sub.p -- (IX) the indices n, m, i, j, k, l, o and p are identical or different and are integers from 0 to 4, where their sum must be at least 2, Ar 1 , Ar 2 , Ar 3 and Ar 4 , are identical or different and are simple or directly para-, meta- or ortho-linked arylene systems having 6 to 18 carbon atoms, and W, X, Y and Z are identical or different and are linking groups selected from --SO 2 --, --S--,--SO--, --CO--, --CO 2 --, alkyl or alkylidene groups having 1-6 carbon atoms, with the proviso that component (B) contains at least one SO or SO 2 group and polymers from the class consisting of polyether sulfones are excluded and, based on the sum (A)+(B), (C) from 0 to 15% by weight of a filler.