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    Cross-linked ethylenic polymer foam structures and process for making
    36.
    发明授权
    Cross-linked ethylenic polymer foam structures and process for making 失效
    交联乙烯聚合物泡沫结构及其制备方法

    公开(公告)号：US5387620A

    公开(公告)日：1995-02-07

    申请号：US252151

    申请日：1994-06-01

    申请人： Chung P. Park ,  Pak-Wing S. Chum ,  George W. Knight

    发明人： Chung P. Park ,  Pak-Wing S. Chum ,  George W. Knight

    IPC分类号： C08J9/06 ,  C08J9/10 ,  C08J9/14 ,  C08J9/00

    CPC分类号： C08J9/14 ,  C08J9/10 ,  C08J2323/16

    摘要： Disclosed is a cross-linked ethylenic polymer foam structure of an ethylenic polymer material of a cross-linked, substantially linear ethylenic polymer. The substantially linear ethylenic polymer having in an uncross-linked state has: a) a melt flow ratio, I.sub.10 /I.sub.2, .gtoreq.5.63; b) a molecular weight distribution, M.sub.w /M.sub.n, defined by the equation: M.sub.w /M.sub.n

    摘要翻译： 公开了交联的，基本上线性的烯属聚合物的乙烯类聚合物材料的交联乙烯类聚合物泡沫结构。 具有未交联状态的基本上线性的乙烯类聚合物具有：a）熔体流动比，I10 / I2，≥5.63; b）由以下等式定义的分子量分布Mw / Mn：Mw / Mn <（I10 / I2）-4.63; 和c）在具有大约相同的I2和Mw / Mn的线性烯属聚合物的表面熔融断裂开始时，表面熔融断裂开始时的临界剪切速率比临界剪切速率大至少50％。 进一步公开了制造上述泡沫结构的方法。

    Multilayer polyolefinic film structures having improved heat seal characteristics
    37.
    发明授权
    Multilayer polyolefinic film structures having improved heat seal characteristics 失效
    具有改善的热封特性的多层聚烯烃薄膜结构

    公开(公告)号：US5089321A

    公开(公告)日：1992-02-18

    申请号：US639648

    申请日：1991-01-10

    申请人： Pak-Wing S. Chum ,  Kaelyn C. Koch

    发明人： Pak-Wing S. Chum ,  Kaelyn C. Koch

    IPC分类号： B32B27/32

    CPC分类号： B32B27/32 ,  Y10S428/91 ,  Y10T428/24992 ,  Y10T428/2826 ,  Y10T428/31746 ,  Y10T428/31913 ,  Y10T428/3192

    摘要： Multilayer thermoplastic film structures comprising at least one heat-sealable outer layer (A) and at least one core layer (B) are disclosed. Layer (A) has improved heat sealability after irradiation (e.g. electron beam). Layer (B) has improved shrinkage after irradiation. Layer (A) is a linear polyethylene having a melt index from about 2 to about 20 g/10 minutes, a density from about 0.88 to about 0.92 g/cc, a molecular weight distribution (I.sub.10 /I.sub.2) from about 5 to about 8, a fraction of the polyethylene having a degree of branching less than or equal to 2 methyls/1000 carbons of not more than 15% by weight and a fraction of the polyethylene having a degree of branching greater than or equal to 25 methyls/1000 carbons of not more than 25% by weight of the polymer. Layer (B) is a linear polyethylene having a melt index from about 0.05 to about 5 g/10 minutes, a density from about 0.88 to about 0.94 g/cc and a molecular weight distribution (I.sub.10 /I.sub.2) from about 8 to about 30.

    摘要翻译： 公开了包括至少一个可热密封的外层（A）和至少一个芯层（B）的多层热塑性薄膜结构。 层（A）在照射后具有改善的热封性（例如电子束）。 层（B）在照射后具有改善的收缩率。 层（A）是具有约2至约20g / 10分钟的熔体指数，约0.88至约0.92g / cc的密度，约5至约8的分子量分布（I 10 / I 2） ，具有小于或等于2个甲基/ 1000个碳的支化度的不超过15重量％的聚乙烯的一部分和具有大于或等于25个甲基/ 1000个碳的支化度的聚乙烯的分数 不超过聚合物的25重量％。 层（B）是具有约0.05至约5g / 10分钟的熔体指数，约0.88至约0.94g / cc的密度和约8至约30的分子量分布（I 10 / I 2）的线性聚乙烯 。

    Optoelectronic devices incorporating fluoropolymer compositions for protection
    39.
    发明授权
    Optoelectronic devices incorporating fluoropolymer compositions for protection 有权
    含有氟聚合物组合物的光电子器件用于保护

    公开(公告)号：US09219182B2

    公开(公告)日：2015-12-22

    申请号：US14131103

    申请日：2012-07-03

    申请人： Xuming Chen ,  Pak-Wing S. Chum ,  Kevin E. Howard ,  Leonardo C. Lopez ,  William C. Sumner ,  Shaofu Wu

    发明人： Xuming Chen ,  Pak-Wing S. Chum ,  Kevin E. Howard ,  Leonardo C. Lopez ,  William C. Sumner ,  Shaofu Wu

    IPC分类号： H01L31/00 ,  H01L31/048 ,  C08K5/00

    CPC分类号： H01L31/0481 ,  C08K5/005 ,  H01L31/048 ,  Y02E10/50 ,  C08L27/18

    摘要： The fluoropolymer compositions of the present invention generally incorporate ingredients comprising one or more fluoropolymers, an ultraviolet light protection component (hereinafter UV protection component), and optionally one or more additional ingredients if desired. The UV protection component includes a combination of at least one hindered tertiary amine (HTA) compound having a certain structure and a weight average molecular weight of at least 1000. This tertiary amine is used in combination with at least one organic, UV light absorbing compound (UVLA compound) having a weight average molecular weight greater than 500. When the HTA compound and the UVLA compound are selected according to principles of the present invention, the UV protection component provides fluoropolymer compositions with significantly improved weatherability characteristics for protecting underlying materials, features, structures, components, and/or the like. In particular, fluoropolymer compositions incorporating the UV protection component of the present invention have unexpectedly improved ability to resist blackening, coloration, or other de gradation that may be caused by UV exposure. As a consequence, devices protected by these compositions would be expected to have dramatically improved service life. The compositions have a wide range of uses but are particularly useful for forming protective layers in optoelectronic devices.

    摘要翻译： 本发明的含氟聚合物组合物通常包含含有一种或多种含氟聚合物的组分，紫外线防护组分（以下称为UV保护组分），以及任选的一种或多种另外的组分。 UV保护组分包括至少一种具有一定结构和重均分子量至少为1000的受阻叔胺（HTA）化合物的组合。该叔胺与至少一种有机的UV光吸收化合物 （UVLA化合物）。当根据本发明的原理选择HTA化合物和UVLA化合物时，UV保护组分提供具有显着改善的耐候性特征的含氟聚合物组合物，用于保护下面的材料，特征 ，结构，部件和/或类似物。 特别地，结合本发明的紫外线防护组分的含氟聚合物组合物意外地改善了抗紫外线曝光引起的黑化，着色或其它脱色的能力。 因此，预期受这些组合物保护的装置将有显着改善的使用寿命。 该组合物具有广泛的用途，但特别适用于在光电器件中形成保护层。