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    LOW BIREFRINGENT THERMOPLASTIC LENSES AND COMPOSITIONS USEFUL IN PREPARING SUCH LENSES
    2.
    发明申请
    LOW BIREFRINGENT THERMOPLASTIC LENSES AND COMPOSITIONS USEFUL IN PREPARING SUCH LENSES 审中-公开
    低双重热塑性镜片和组合物可用于制作这些镜片

    公开(公告)号：US20100271702A1

    公开(公告)日：2010-10-28

    申请号：US12810030

    申请日：2008-09-18

    申请人： Weijun Zhou ,  Stephen F. Hahn ,  Charles F. Diehl ,  Kurt A. Koppi

    发明人： Weijun Zhou ,  Stephen F. Hahn ,  Charles F. Diehl ,  Kurt A. Koppi

    IPC分类号： G02B1/11 ,  C08F236/10 ,  B29D11/00

    CPC分类号： C08F297/04 ,  C08F8/50 ,  C08F2800/20 ,  C08L53/025 ,  G02B1/041 ,  C08L2666/02 ,  C08F297/046

    摘要： A lens-forming thermoplastic composition of matter has a crystallinity, as determined in accord with differential scanning calorimetry of from 0 percent to less than 1 percent when the composition comprises a hydrogenated vinyl aromatic/isoprene block copolymer or a crystallinity, as determined in accord with differential scanning calorimetry of from more than 0 percent to less than 1 percent when the composition comprises a hydrogenated vinyl aromatic/butadiene block copolymer. The composition has a birefringence, measured at a wavelength of 633 nanometers, within a range of from 0 to less than 6×10. Molding a melt of these compositions occurs at temperatures within a range from the hydrogenated block copolymer's glass transition minus 20° C. to the glass transition temperature minus 90° C. The compositions suitably form lenses such as an optical pick-up lens, which may be aspherical or have at least one of an irregular surface configuration, a non-uniform thickness or an irregular and non-uniform cross-section.

    摘要翻译： 当组合物包含氢化乙烯基芳族化合物/异戊二烯嵌段共聚物或结晶度时，物质的透镜形成热塑性组合物具有结晶度，其根据差示扫描量热法测定为0％至小于1％，如根据 当组合物包含氢化乙烯基芳族化合物/丁二烯嵌段共聚物时，差示扫描量热法为大于0％至小于1％。 该组合物在波长为633纳米的范围内具有在0至小于6×10的范围内的双折射率。 成型这些组合物的熔体发生在从氢化嵌段共聚物的玻璃化转变为-20℃到玻璃化转变温度-90℃的范围内的温度下。组合物适当地形成诸如光学拾取透镜的透镜，其可以是 是非球面的或具有不规则表面构型，不均匀厚度或不规则和不均匀横截面中的至少一个。

    Extrusion Die and Process for Producing an Extruded Filled Polymer Composition
    3.
    发明申请
    Extrusion Die and Process for Producing an Extruded Filled Polymer Composition 审中-公开
    挤出模具和挤出的填充聚合物组合物的制备方法

    公开(公告)号：US20090146339A1

    公开(公告)日：2009-06-11

    申请号：US11988410

    申请日：2006-07-12

    申请人： Bruce A. Malone ,  Kurt A. Koppi

    发明人： Bruce A. Malone ,  Kurt A. Koppi

    IPC分类号： B29C47/00

    CPC分类号： B29C48/705 ,  B29C48/022 ,  B29C48/03 ,  B29C48/256 ,  B29C48/30 ,  B29C48/305 ,  B29K2023/065 ,  B29K2105/0032 ,  B29K2105/06 ,  B29K2105/256 ,  B29K2711/14

    摘要： Prepare an extruded filled polymer composite having a highly disperse and uniformly distributed filler by extruding a filled polymer composite through a die with a Flow Restriction Zone, a Flow Redistribution Zone and a Land Zone. The Flow Restriction Zone is proximate to the extruder and increases polymer melt backpressure in the extruder sufficient to induce high dispersion of the filler but not enough to cause undesirable degradation of the polymer melt components.

    摘要翻译： 通过用流动限制区域，流动再分配区域和陆地区域通过模具挤出填充的聚合物复合材料来制备具有高度分散且均匀分布的填料的挤出填充聚合物复合材料。 流动限制区域靠近挤出机，并增加挤出机中的聚合物熔体背压足以引起填料的高分散性，但不足以引起聚合物熔体组分的不期望的降解。