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    CELLULAR POLYAMIDE FIBRES
    12.
    发明专利
    CELLULAR POLYAMIDE FIBRES 未知

    公开(公告)号：GB1300467A

    公开(公告)日：1972-12-20

    申请号：GB3726670

    申请日：1970-08-01

    Applicant: TORAY INDUSTRIES

    Inventor： KATO TETSUYA ,  HIDAKA TOSHIAKI ,  OKAGAWA CHIKATSU

    IPC: C08L77/00 ,  D01D5/24 ,  D01D5/247 ,  D01F1/10 ,  D01F6/60

    Abstract: 1300467 Cellular Polyamide fibres TORAY INDUSTRIES Inc 1 Aug 1970 37266/70 Heading B5B [Also in Division C3] Cellular polyamide fibres are produced from a dispersion of a thermally stable polyalkylene ether modifier having a molecular weight of 600 to 60,000 in a polyamide, the dispersion containing between 0À2 and 3À5 millimole alkylene oxide units per gram of polyamide, by converting the dispersion into pellets, melt spinning the pellets into filaments, drawing the filaments until they have a predetermined orientation and extracting the modifier to produce filaments having 0À5 to 13% by volume of voids. The modifier is present in the pellets as particles, the average axial diameter of at least 50% of them being below 20Á. The birefringence of the filaments should be not less than (49 log 10 (8a+8)-32) Î 10 -3 where a is the millimoles of alkylene oxide units per gram of polyamide. The modifier may be a reaction product of a polyalkylene oxide such as polyethylene oxide or polypropylene oxide, with a polyamide monomer, such as a lactam, or oligomer. The modifier may also be a phosphoric acid ester, or a metal salt thereof, of a polyalkylene ether having at least one hydroxy radical. The modifier may be introduced into the polyamide by dissolving it in the polyamide monomer solution or mixing it with the monomer, and then polymerizing the monomer. The modifier may be removed from the filaments after spinning by dissolving it out with water or an organic solvent, such as a mixture of methanol and benzene, which does not dissolve the polyamide. The lustre of the fibre may be improved by addition of fine white particles whose maximum diameter is less than 10Á, the quantity of which is given by the formula where C is the quantity in per cent by weight and d is the difference between the refractive indeces of the polyamide and the particles. Suitable particulate materials are talc, CaCO 3 , titanium oxide and kaolinite. The fibres produced should have a ratio of strength of scattered light (I/I 0 ) as herein defined of from 1À5 to 15 and a lustre factor, also as herein defined, of from 20 to 90.

    POLYAMIDE COMPOSITIONS
    13.
    发明专利
    POLYAMIDE COMPOSITIONS 未知

    公开(公告)号：GB1298628A

    公开(公告)日：1972-12-06

    申请号：GB2805470

    申请日：1970-06-10

    Applicant: TORAY INDUSTRIES ,  SANYO CHEMICAL IND LTD

    Inventor： KATO TETSUYA ,  OKAGAWA CHIKATSU ,  SUWADA ATARU ,  OHNO SATOYOSHI

    IPC: C08K5/521

    Abstract: 1298628 Antistatic polyamides TORAY INDUSTRIES Inc and SANYO CHEMICAL INDUSTRIES Ltd 10 June 1970 28054/70 Heading C3R Antistatic properties are imparted to synthetic linear polyamides by incorporation of 0À5 to 15 wt. per cent of a phosphoric ester component which is predominantly a triester of the formula obtained by triesterifying an addition product of a compound containing a carbonamide group and ethylene and/or propylene oxide. The balance of the ester component may be metal salts of the mono- and di-esters whose similar use is described and claimed in Specification 1,226,114. It is stated that predominantly triesterification may be accomplished by using a strong esterifying agent such as phosphorus oxychloride. Specified compounds containing carbonamide groups are 4 to 13 member lactams, oligomers up to the hexamer thereof, or of the corresponding amino acid, and up to trimers of a diacid and diamine. Specified polyamides are nylons 6, 66, 7, 8, 610, 11 and 12 and poly-pxylylene dodecanoamide. Various techniques for incorporating the antistatic agent are described. U.-V. and heat stabilizers, delustrants, dyes and pigments may also be incorporated. Uses.-The antistatic polyamides are particularly useful as fibres for various textile uses but reference is also made to their use in other shaped articles.

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