Transparent thermoplastic molding compound and use thereof

摘要

PCT No. PCT/EP90/00585 Sec. 371 Date Nov. 7, 1991 Sec. 102(e) Date Nov. 7, 1991 PCT Filed Apr. 13, 1990 PCT Pub. No. WO90/12043 PCT Pub. Date Oct. 18, 1990.A transparent thermoplastic molding compound consisting of 40 to 90% by weight of units derived from tetrafluoroethylene, and 60 to 10% by weight of units derived from compounds of formula I or II: CF2=CF-O-(CF2-CF(CF3)-O)m-(CF2)n-CF3(I) CF2=CF-O-(CF2-CF(CF3)-O)p-(CF2)q-COO-R(II) is particularly suitable for manufacturing the sheath of beam waveguides whose core has a higher transparency than polymethyl methacrylate.