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    FIRE RETARDANT SHEATH AND CORE CONJUGATE FIBRES
    2.
    发明专利
    FIRE RETARDANT SHEATH AND CORE CONJUGATE FIBRES 未知

    公开(公告)号：GB1279357A

    公开(公告)日：1972-06-28

    申请号：GB4142570

    申请日：1970-08-28

    Applicant: TORAY INDUSTRIES

    Inventor： YANAGI MASANA ,  NAKAMURA ITARU ,  OHOSUGI MASAYUKI ,  TAKIZAWA KIYOSI ,  KAKINAMI MASANORI ,  SANO CHIKARA

    IPC: D01F1/10 ,  D01F8/04

    Abstract: 1279357 Fireproofed conjugate filaments TORAY INDUSTRIES Inc 28 Aug 1970 41425/70 Heading B5B A conjugate sheath and core fibre comprises a core polymer which contains more than 5% by weight and less than 50% of a halogenated fire retardant compound and more than 5% by weight of a phosphorus-containing fire-retardant compound. The core component contains those compounds in such quantities that the halogen in the core component provided by the halogenated fire-retarding compound is between 3 and 50 times the weight of the phosphoruscontaining fire-retardant compound present in the core. The sheath polymer may also contain these fire-retarding compounds but, when it does, the percentage by weight of both of them is less than that obtaining in the core polymer. In addition, the maximum quantity of the halogenated fire-retardant is that which gives a halogen content of 10% by weight of the sheath polymer. The fibres are produced conventionally by melt-spinning the polymeric materials, the fireretardant compounds being present in the melt. The invention is particularly suitable for use with polyamides such as Nylon 6, Nylon 6,6 and polyesters such as homo- or copolymers of polyethylene terephthalate. Preferred phosphorus-containing fire-retardants are trialkyl and triaryl phosphates and phosphites and preferred halogenated compounds have the general formula C 6 H 4 X m Y n where X is chlorine or bromine, Y a plurailty of specified alkyl, aryl and alkylaryl radicals and m and n integers such that m is from 1 to 6 and n from 0 to 5. The fibres retain the fire-retardant compounds under normal conditions of use, and undergo little yellowing or exposure to U.V. light.

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