27.
    发明专利
    未知

    公开(公告)号:SE7411623L

    公开(公告)日:1975-03-18

    申请号:SE7411623

    申请日:1974-09-16

    Applicant: HOECHST AG

    Abstract: Flame-repellant linear polyesters are obtained by incorporating by condensation phosphorus-compounds having the formula O &uarr& HO-P-R-COOH, ¦ R1 wherein R and R1 are organic radicals which may also contain hereto atoms into the linear polyesters, preferably those from terephthalic acid and ethylene glycol. These polyesters are materials of which flame-repellent filaments, fibers, sheets, press-moulded and injection-moulded articles may be made. Products of the invention can be used whereever especially acute risks of ignition and fire exist.

    FLAME RESISTANT SYNTHETIC LINEAR POLYESTERS AND SHAPED STRUCTURES MADE THEREOF

    公开(公告)号:ZA735747B

    公开(公告)日:1974-08-28

    申请号:ZA735747

    申请日:1973-08-22

    Applicant: HOECHST AG

    Abstract: Permanently flame-resistant synthetic linear polyesters are obtained by incorporating by condensation into the polyester composed of the usual dicarboxylic acid and diol units an alkylphosphine oxide of the formula WHEREIN THE RADICALS R to R4 represent organic radicals of which R2, R3 and Z may be substituted by 2 hydroxyl groups altogether, R2, R3 and R4 may also represent hydrogen and a is zero or a whole number of from 1 to 4. The flame-resistant polyesters are processed into shaped structures such as fibers, filaments, sheets, injection and compression molded articles characterized by good flameproofness and dyeing properties.

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