| abstract |
Polymer blends obtainable by heat-treating at least 150 ° C. a mixture containing at least 150 parts by weight of one or more high performance polymers and 15 to 99 parts by weight of sulfoxide group-containing polymers, preferably 40 to 90 parts by weight, particularly preferably 55 to 75 parts by weight. And a mixture containing at least one of a high performance polymer such as polyester, partially fluorinated polymer, polyethersulfone, polysulfone, polyetherimide, polyamidoimide and polyacetal and at least one sulfoxide group-containing polymer The crosslinked or partially crosslinked polymer blends that can be obtained are characterized by excellent thermal and chemical stability. Sulfoxide group-containing polymers are polyarylene sulfoxides, in particular polyphenylene sulfoxides. The polymer blend is used in the manufacture of fibers, films or shaped articles. |