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    3.
    发明专利
    未知

    公开(公告)号：DE59308967D1

    公开(公告)日：1998-10-15

    申请号：DE59308967

    申请日：1993-06-07

    Applicant: HOECHST AG

    Inventor： WELLENHOFER HERBERT DR ,  BRUCKNER WERNER DR ,  FISCHER ANDREAS ,  LEUMER GERHARD DR

    IPC: D01F6/76 ,  D01D5/092 ,  D02J1/22

    Abstract: There is described a process for producing fibres from polyarylene sulphides comprising the steps of: a) melt spinning a polyarylene sulphide into a gas, in particular into air, at a pump rate of at least 0.5 g/(min x hole), b) forcedly cooling the spun filaments in the spinning column by quenching with a blown gas, c) taking off the filaments at a speed of more than 800 m/min, preferably between 1000 and 5000 m/min, d) intermediately storing the spun filaments, e) drawing the spun filaments in two stages in an aftertreatment stage by e1) drawing in the first stage at a temperature between the glass transition temperature and the yield temperature and to such a degree that the filaments are virtually completely drawn and e2) drawing in the second stage at a temperature above that of the first stage and below the crystallite melting point temperature of the filaments to such a degree that the filaments are additionally drawn by 5 to 30% and in such a way that no mechanical contact is involved in the heat transfer of the second drawing stage and the drawing tension is 11 to 25 cN/tex, based on the true linear density, and f) immediately thereafter heat setting the drawn filaments. The process of the invention is suitable for producing fibres having very good mechanical properties, such as tensile strength and transverse strength. The process is notable for high productivity, since high takeoff speeds are employed and subsequent drawing is carried out in two stages.

    PROCESS FOR PRODUCING POLYARYLENE SULFIDE FIBER AND THEREBY OBTAINABLE POLYARYLENE SULFIDE MULTIFILAMENT YARN
    4.
    发明专利
    PROCESS FOR PRODUCING POLYARYLENE SULFIDE FIBER AND THEREBY OBTAINABLE POLYARYLENE SULFIDE MULTIFILAMENT YARN 未知

    公开(公告)号：CA2098692A1

    公开(公告)日：1993-12-19

    申请号：CA2098692

    申请日：1993-06-17

    Applicant: HOECHST AG

    Inventor： WELLENHOFER HERBERT ,  BRUCKNER WERNER ,  FISCHER ANDREAS ,  LEUMER GERHARD

    IPC: D01D5/092 ,  D01F6/76 ,  D02J1/22 ,  D01D5/08

    Abstract: Process for producing polyarylene sulfide fiber and thereby obtainable polyarylene sulfide multifilament yarn There is described a process for producing fiber from polyarylene sulfide comprising the steps of: a) melt spinning a polyarylene sulfide into a gas, in particular into air, at a pump rate of at least 0.5 g/(min x hole), b) forcedly cooling the spun filaments in the spinning column by quenching with a blown gas, c) taking off the filaments at a speed of more than 800 m/min, preferably between 1000 and 5000 m/min, d) intermediately storing the spun filaments, e) drawing the spun filaments in two stages in an aftertreatment stage by e1) drawing in the first stage at a temperature between the glass transition temperature and the yield temperature and to such a degree that the filaments are virtually completely drawn and e2) drawing in the second stage at a temperature above that of the first stage and below the crystallite melting point temperature of the filaments to such a degree that the filaments are additionally drawn by 5 to 30% and in such a way that no mechanical contact is involved in the heat transfer of the second drawing stage and the drawing tension is 11 to 25 cN/tex, based on the true linear density, and f) immediately thereafter heat setting the drawn filaments. The process of the invention is suitable for producing fiber having very good mechanical properties, such as tensile strength and transverse strength. The process is notable for high productivity, since high takeoff speeds are employed and subsequent drawing is carried out in two stages.

    5.
    发明专利
    未知

    公开(公告)号：MX9303643A

    公开(公告)日：1994-05-31

    申请号：MX9303643

    申请日：1993-06-17

    Applicant: HOECHST AG

    Inventor： LEUMER GERHARD ,  WELLWNHOFER HERBERT ,  BRUCKNER WERNER ,  FISCHER ANDREAS

    IPC: D01F6/76 ,  D01D5/092 ,  D02J1/22 ,  D01D5/088

    Abstract: There is described a process for producing fibres from polyarylene sulphides comprising the steps of: a) melt spinning a polyarylene sulphide into a gas, in particular into air, at a pump rate of at least 0.5 g/(min x hole), b) forcedly cooling the spun filaments in the spinning column by quenching with a blown gas, c) taking off the filaments at a speed of more than 800 m/min, preferably between 1000 and 5000 m/min, d) intermediately storing the spun filaments, e) drawing the spun filaments in two stages in an aftertreatment stage by e1) drawing in the first stage at a temperature between the glass transition temperature and the yield temperature and to such a degree that the filaments are virtually completely drawn and e2) drawing in the second stage at a temperature above that of the first stage and below the crystallite melting point temperature of the filaments to such a degree that the filaments are additionally drawn by 5 to 30% and in such a way that no mechanical contact is involved in the heat transfer of the second drawing stage and the drawing tension is 11 to 25 cN/tex, based on the true linear density, and f) immediately thereafter heat setting the drawn filaments. The process of the invention is suitable for producing fibres having very good mechanical properties, such as tensile strength and transverse strength. The process is notable for high productivity, since high takeoff speeds are employed and subsequent drawing is carried out in two stages.

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