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    • 1. 发明申请
    • Process for the preparation of polymer yarns from ultra high molecular weight homopolymers or copolymers, polymer yarns, molded polymer parts, and the use of polymer yarns
    • 用于从超高分子量均聚物或共聚物,聚合物纱线,模制聚合物部件以及使用聚合物纱线制备聚合物纱线的方法
    • US20080290550A1
    • 2008-11-27
    • US11979951
    • 2007-11-09
    • Fernanda Oliveira Vieira Da CunhaAlan Kardec Do NascimentoBreno De La RueMartha De La Rue Beckerdorf
    • Fernanda Oliveira Vieira Da CunhaAlan Kardec Do NascimentoBreno De La RueMartha De La Rue Beckerdorf
    • D01D5/06
    • D01D5/06C08F110/02D01F6/04D01F6/06D01F6/30Y10T428/298C08F2500/01C08F2500/17C08F2500/18
    • A process for the preparation of polymer yarns from ultra high molecular weight homopolymers or copolymers, wherein the process includes the following steps:(a1) preparing a suspension of a homopolymer or copolymer and a spinning or gelling solvent, of a non polar nature at a weight of homopolymer or copolymer to solvent ratio from 2/98 to 30/70; wherein said homopolymer or copolymer has a monomodal, bimodal or multimodal molecular weight distribution, and is obtained from C2+n monomers, wherein n varies from 0 to 2; (b1) feeding said homopolymer or copolymer suspension, to an extruder; (c1) extruding the suspension with the formation of a gel, at a temperature in excess of 150° C., under regular atmospheric or inert conditions; (d1) spinning the gel to obtain non-stretched filaments with diameters of at least 1 mm, at a temperature in excess of 150° C., while maintaining regular atmospheric or inert conditions; (e1) cooling the non-stretched filaments or yarns; (f1) taking up the non stretched filaments or yarns, at a velocity in excess of 10 m/min; (g1) feeding the non-stretched filaments or yarns, to an extractor together with the feed of an organic extraction solvent, with a boiling point below 80° C.; (h1) extracting said non-polar long chain solvent impregnated in the yarns at a temperature of at least 30° C. and a pressure of at least 196 kPa (2 kgf/cm2); (i1) removing the spent organic solvent from the extractor; (j1) drying the non-stretched filament bundles or yarns wherein the dry yarn has at most 4%, by weight, and preferably at most 2%, by weight, of the non polar long chain solvent; and (h1) stretching said dry yarns at a temperature in excess of 80° C.
    • 一种用于从超高分子量均聚物或共聚物制备聚合物纱线的方法,其中该方法包括以下步骤:(a1)制备非极性性质的均聚物或共聚物和纺丝或胶凝溶剂的悬浮液 均聚物或共聚物与溶剂的重量比为2/98至30/70; 其中所述均聚物或共聚物具有单峰,双峰或多峰分子量分布,并且由C2 + n单体获得,其中n在0至2之间变化; (b1)将所述均聚物或共聚物悬浮液进料到挤出机中; (c1)在规定的大气或惰性条件下,在超过150℃的温度下挤出形成凝胶的悬浮液; (d1)在保持规则的大气或惰性条件的同时,将凝胶纺丝得到直径至少为1mm的非拉伸长丝,温度超过150℃; (e1)冷却未拉伸的长丝或纱线; (f1)以超过10m / min的速度卷取未拉伸的长丝或纱线; (g1)将未拉伸的长丝或纱线与沸点低于80℃的有机萃取溶剂的进料一起供给到萃取器中。 (h1)在至少30℃的温度和至少196kPa(2kgf / cm 2)的压力下提取浸渍在纱线中的所述非极性长链溶剂; (i1)从萃取器中除去废有机溶剂; (j1)干燥非拉伸长丝束或纱线,其中干纱线具有至多4重量%,优选至多2重量%的非极性长链溶剂; 和(h1)在超过80℃的温度下拉伸所述干纱。