Filaments and films of polymers of alkylene sulfides
    3.
    发明授权
    Filaments and films of polymers of alkylene sulfides 失效
    烷基硫化物聚合物的胶片和胶片

    公开(公告)号:US3668060A

    公开(公告)日:1972-06-06

    申请号:US3668060D

    申请日:1970-04-10

    Applicant: CELANESE CORP

    Abstract: Hard stretch filaments and films produced by extruding a heat softened or molten polymer of alkylene sulfide, such as polyethylene sulfide, having an inherent viscosity of about 0.5 or greater, through a shaping orifice to form the filament or film and taking up the product at a linear rate of from 20 to 3,000 meters per minute at a drawdown ratio of from 100:1 to 4000:1. A filament which spontaneously develops helical crimps along its length produced when a drawdown ratio greater than 1200:1 is used. Open-celled filaments or films produced from the hard stretch filaments and films by stretching the filaments or films in a range of from about 50 percent of the unstretched length up to about 90 percent of the breaking elongation and stabilized by heating the filament or film while in the stretched state to a temperature in the range from about 80*C. to a temperature below the melting point of the polymer.

    Abstract translation: 硬拉伸长丝和薄膜通过成形孔挤出一种具有约0.5或更大的特性粘度的硫化亚烷基硫化物的热软化或熔融聚合物,如聚乙烯硫化物制成,以形成丝或薄膜,并在一 线速度为20至3,000米/分钟,牵伸比为100:1至4000:1。 当使用大于1200:1的牵伸比时,沿其长度自发形成螺旋卷曲的细丝。 通过将长丝或薄膜拉伸的长丝或薄膜的拉伸长丝直径约为断裂伸长率的约百分之九十,并且通过加热丝或薄膜而稳定化,由硬拉伸丝和薄膜制成的开孔细丝或薄膜 在拉伸状态下达到约80℃至低于聚合物熔点的温度。

    3-methylbutene-1 polymer fiber
    4.
    发明授权
    3-methylbutene-1 polymer fiber 失效
    3-METHYLBUTENE-1聚合物纤维

    公开(公告)号:US3631160A

    公开(公告)日:1971-12-28

    申请号:US3631160D

    申请日:1966-11-02

    Applicant: CELANESE CORP

    CPC classification number: D01F6/04 D01F6/30 Y10T428/298

    Abstract: IMPROVED FILAMENTSOF 3-METHYLBUTENE-1, PARTICULARLY WITH RESPECT TO TENSILE PROPERTIES AT ELEVATED TEMPERATURES, MAY BE PREPARED BY HEAT TREATING POLYMERIC 3-METHYLBUTENE-1 PRIOR TO EXTRUSION AT A TEMPERATURE ABOVE ITS MELTING POINT TO INCREASE THE MELT INDEX ABOVE 10 AND THEN MELT SPINNING THE HEATED POLYMER THROUGH AT LEAST A 14 MIL DIAMETER SPINNERETTE AND DRAWING DOWN THE RESULTANT FILAMENT AT A RATIO OF AT LEAST ABOUT 150.

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