33.
    发明专利
    未知

    公开(公告)号:AT112787T

    公开(公告)日:1994-10-15

    申请号:AT90906154

    申请日:1990-04-12

    Applicant: HOECHST AG

    Abstract: 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.

    PROCESS FOR PRODUCING AN OPTICAL COUPLER FOR POLYMER OPTICAL WAVEGUIDES

    公开(公告)号:CA2041212A1

    公开(公告)日:1991-10-27

    申请号:CA2041212

    申请日:1991-04-25

    Applicant: HOECHST AG

    Abstract: HOE 90/F 128 Process for producing an optical coupler for polymer optical waveguides Process for producing an optical coupler for polymer optical waveguides by arranging the optical waveguides in the same sense and bundling them by means of a plastic shrink-on sleeve. In this process, two to 105 polymer optical waveguides are arranged in the same sense and bundled and a plastic tube is put over the mixing region. Then a piece of plastic shrink-on sleeve is pushed over the plastic tube and the shrink-on sleeve is heated to a temperature at which it contracts. The shrinkage temperature of the shrink-on sleeve is inside the thermoelastic temperature range of the plastic tube. The optical waveguide bundle may be stretched during or after heating.

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