利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

5 条记录 (耗时 0.035 秒)

    Polymer compositions containing brominated polystyrenic resins
    2.
    发明授权
    Polymer compositions containing brominated polystyrenic resins 有权
    含有溴化聚苯乙烯树脂的聚合物组合物

    公开(公告)号：US06235831B1

    公开(公告)日：2001-05-22

    申请号：US09151110

    申请日：1998-09-10

    申请人： Jon S. Reed ,  Susan D. Landry ,  Daniel A. De Schryver ,  Billie B. Dadgar ,  Donald E. Balhoff ,  Charles H. Kolich ,  Meng-Sheng Ao ,  Homer C. Lin

    发明人： Jon S. Reed ,  Susan D. Landry ,  Daniel A. De Schryver ,  Billie B. Dadgar ,  Donald E. Balhoff ,  Charles H. Kolich ,  Meng-Sheng Ao ,  Homer C. Lin

    IPC分类号： C08L4700

    CPC分类号： C08L67/02 ,  C08F8/20 ,  C08F8/22 ,  C08L25/00 ,  C08F12/08 ,  C08F12/00

    摘要： A polyalkylene terephthalate polymer, such as polyethylene terephthalate, polybutylene terephthalate, blends or copolymers thereof, and analogous polyester-type engineering thermoplastics, with which has been blended a flame retardant amount of brominated styrenic polymer, such as brominated polystyrene, that, prior to blending, is characterized by (a) containing less than 700 ppm Cl and having a TGA temperature for 1% weight loss of 340° C. or higher; and/or (b) having an actual Mw which is within about 20%, and preferably within about 10%, of its calculated theoretical Mw, the theoretical Mw being based upon the actual bromine content of the brominated styrenic polymer and the Mw of the styrenic polymer reactant used to produce the brominated styrenic polymer; and/or (c) being essentially free of each of the following impurities: (1) ethylene dichloride, (2) bromodichloroethane, (3) dibromochloroethane, (4) dibromodichloroethane, and (5) tribrormochloroethane. These compositions most preferably also further comprise a reinforcing amount of glass fiber and/or a flame retardant synergist dispersed therein. It is now possible to provide polyalkylene terephthalate compositions that have a UL-94 rating of V-O using both {fraction (1/16)}-inch test specimens and {fraction (1/32)}-inch test specimens, and that have superior electrical resistance characteristics as reflected by a higher comparative tracking index and greater melt stability as determined by capillary rheometry.

    摘要翻译： 聚对苯二甲酸亚烷基酯聚合物，例如聚对苯二甲酸乙二醇酯，聚对苯二甲酸丁二醇酯，它们的共混物或共聚物，以及类似的聚酯型工程热塑性塑料，其中共混有阻燃量溴化苯乙烯聚合物如溴化聚苯乙烯， 的特征在于（a）含有少于700ppm Cl且具有340℃或更高的1％重量损失的TGA温度; 和/或（b）具有在其计算的理论Mw的约20％，优选在约10％内的实际Mw，理论Mw基于溴化苯乙烯类聚合物的实际溴含量和 用于生产溴化苯乙烯聚合物的苯乙烯聚合物反应物; 和/或（c）基本上不含以下各种杂质：（1）二氯乙烷，（2）溴二氯乙烷，（3）二溴氯乙烷，（4）二溴二氯乙烷和（5）三溴氯乙烷。 这些组合物最优选还包含分散在其中的增强量的玻璃纤维和/或阻燃增效剂。 现在可以使用{分数（1/16）} - 英寸试样和{部分（1/32）} - 英寸试样提供具有UL-94等级VO的聚对苯二甲酸亚烷基酯组合物，并且具有优异的 电阻特性由较高的比较跟踪指数反映，并且通过毛细血管流变测定确定更高的熔体稳定性。

    UV stable compositions
    3.
    发明授权
    UV stable compositions 失效
    UV稳定组合物

    公开(公告)号：US5280056A

    公开(公告)日：1994-01-18

    申请号：US15659

    申请日：1993-02-09

    申请人： Susan D. Landry ,  Jon S. Reed ,  F. Alexander Pettigrew

    发明人： Susan D. Landry ,  Jon S. Reed ,  F. Alexander Pettigrew

    IPC分类号： C08K5/3412 ,  C08K5/3417 ,  C08L101/00 ,  C08K5/32

    CPC分类号： C08K5/3417

    摘要： This invention relates to a method for increasing the ultraviolet light stability of articles made from macromolecular materials comprising: forming a flame-retarded formulation containing macromolecular material and a mixture of (i) a first alkylenebis(tetrabromophthalimide) flame retardant having a yellowness index (YI) value ranging from about 20 to about 40 as determined by ASTM D-1925; and (ii) a second alkylenebis-(tetrabromophthalimide) flame retardant having a yellowness index (YI) value (ASTM D-1925) ranging from about 2 to about 15 whereby the uv stability of a test plaque made from the flame-retarded formulation is greater than the arithmetic average of the uv stabilities of a test plaque made from a flame-retarded formulation containing (i) but not (ii) and of a test plaque made from a flame-retarded formulation containing (ii) but not (i).

    摘要翻译： 本发明涉及提高由高分子材料制成的制品的紫外光稳定性的方法，包括：形成含有高分子材料的阻燃制剂和（i）具有黄色指数（YI）的第一亚烷基双（四溴邻苯二甲酰亚胺）阻燃剂 ）值为约20至约40，如ASTM D-1925所测定; 和（ii）黄色指数（YI）值（ASTM D-1925）为约2至约15的第二亚烷基双（4-溴邻苯二甲酰亚胺）阻燃剂，由此由阻燃制剂制成的测试斑块的紫外稳定性为 大于由含有（i）而不是（ii）的阻燃制剂制成的测试斑块的紫外稳定性的算术平均值，以及由含有（ii）但不包括（i）的阻燃制剂制成的测试斑块， 。