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    • 1. 发明授权
    • Impact-modified thermoplastic polyolefins and articles fabricated
therefrom
    • 冲击改性的热塑性聚烯烃及其制造的制品
    • US6140420A
    • 2000-10-31
    • US204008
    • 1998-12-01
    • Kalyan SehanobishLarry A. MeiskeShaofu WuPak-Wing Steve Chum
    • Kalyan SehanobishLarry A. MeiskeShaofu WuPak-Wing Steve Chum
    • C08J3/20C08F10/02C08L23/00C08L23/08C08L23/12C08L23/16C08L51/00C08L101/00C08F8/30
    • C08L23/12C08L101/00C08L23/16C08L23/0815C08L2314/06Y10T428/1352
    • Melt processible thermoplastic compositions and method for making them are described, these compositions comprising a thermoplastic polymer resin matrix selected from the group consisting of thermoplastic polyurethanes, polyvinyl chlorides, styrenics, engineering thermoplastics, and polyolefins, at least about 25 percent (by weight based on the total composition) of an elastomeric impact modifier dispersed as discrete particles in the thermoplastic matrix (a); and at least about 10 percent (by weight based on the total composition) of at least one homogeneous linear or substantially linear ethylene polymer dispersed as discrete particles in at least the impact modifier (b), the ethylene polymer having a molecular weight distribution less than 3.5 and a density of at least 0.04 g/cm.sup.3 higher than the density of the impact modifier component (b), wherein the elastic modulus of the thermoplastic component (a) is at least 200 times greater than the elastic modulus of the impact modifier component (b). These thermoplastic compositions have improved processability. Processes for fabricating articles from them are described. The articles made with these compositions have improved properties such as low temperature impact strength, improved percent elongation to break, greater stiffness, and improved weld line strength, making them useful for applications requiring both strength and flexibility in low temperature environments, such as automotive components and facia.
    • 描述了可熔融加工的热塑性组合物及其制备方法,这些组合物包含选自热塑性聚氨酯,聚氯乙烯,苯乙烯,工程热塑性塑料和聚烯烃的热塑性聚合物树脂基体,至少约25%(以 分散在热塑性基体(a)中的离散颗粒的弹性体抗冲改性剂的总组成); 至少约10%(基于总组合物的重量计)至少一种均匀的直链或基本上线性的乙烯聚合物,其至少在至少抗冲改性剂(b)中分散成分散的颗粒,乙烯聚合物的分子量分布小于 3.5,并且比冲击改性剂组分(b)的密度高至少0.04g / cm 3的密度,其中热塑性组分(a)的弹性模量是冲击改性剂组分(a)的弹性模量的至少200倍 (b)。 这些热塑性组合物具有改善的加工性能。 描述从它们制造制品的方法。 用这些组合物制成的制品具有改进的性能,例如低温冲击强度,改善的断裂延伸百分比,更大的刚度和更好的焊接线强度,使得它们可用于在低温环境中要求强度和柔性的应用,例如汽车部件 和面。
    • 2. 发明授权
    • Impact-modified thermoplastic polyolefins and articles fabricated
therefrom
    • 冲击改性的热塑性聚烯烃及其制造的制品
    • US5861463A
    • 1999-01-19
    • US741648
    • 1996-10-31
    • Kalyan SehanobishShaofu WuLarry A. MeiskePak-Wing Steve Chum
    • Kalyan SehanobishShaofu WuLarry A. MeiskePak-Wing Steve Chum
    • C08J3/20C08F10/02C08L23/00C08L23/08C08L23/12C08L23/16C08L51/00C08L101/00C08F30/00
    • C08L23/12C08L101/00C08L23/16C08L23/0815C08L2314/06Y10T428/1352
    • Melt processible thermoplastic compositions and method for making them are described, these compositions comprising a) a polypropylene matrix, b) at least about 25 percent (by weight based on the total composition) of an elastomeric impact modifier dispersed as discrete particles in the polypropylene matrix (a); and c) at least about 10 percent (by weight based on the total composition) of at least one homogeneous linear or substantially linear ethylene polymer dispersed as discrete particles in at least the impact modifier (b), the ethylene polymer having a molecular weight distribution less than 3.5 and a density of at least 0.04 g/cm.sup.3 higher than the density of the impact modifier component (b), wherein the elastic modulus of the polypropylene (a) is at least 200 times greater than the elastic modulus of the impact modifier component (b).These thermoplastic compositions have improved processability. Processes for fabricating articles from them are described. The articles made with these compositions have improved properties such as low temperature impact strength, improved percent elongation to break, greater stiffness, and improved weld line strength, making them useful for applications requiring both strength and flexibility in low temperature environments, such as automotive components and facia.
    • 描述了可熔融加工的热塑性组合物及其制备方法,这些组合物包含a)聚丙烯基体,b)至少约25重量%(基于总组合物的重量)作为分散颗粒分散在聚丙烯基体中的弹性体抗冲改性剂 (一个); 和至少一种在至少一种抗冲改性剂(b)中作为离散颗粒分散的均匀线性或基本上线性的乙烯聚合物的至少约10重量%(基于总组合物计)),乙烯聚合物具有分子量分布 小于3.5,并且比冲击改性剂组分(b)的密度高至少0.04g / cm 3的密度,其中聚丙烯(a)的弹性模量比冲击改性剂的弹性模量大至少200倍 组分(b)。 这些热塑性组合物具有改善的加工性 描述从它们制造制品的方法。 用这些组合物制成的制品具有改进的性能,例如低温冲击强度,改善的断裂延伸百分比,更大的刚度和更好的焊接线强度,使得它们可用于在低温环境中要求强度和柔性的应用,例如汽车部件 和面。
    • 8. 发明申请
    • OPTOELECTRONIC DEVICES INCORPORATING FLUOROPOLYMER COMPOSITIONS FOR PROTECTION
    • 含荧光体组合物的光电装置用于保护
    • US20140124031A1
    • 2014-05-08
    • US14131103
    • 2012-07-03
    • Xuming ChenPak-Wing S. ChumKevin E. HowardLeonardo C. LopezWilliam C. SumnerShaofu Wu
    • Xuming ChenPak-Wing S. ChumKevin E. HowardLeonardo C. LopezWilliam C. SumnerShaofu Wu
    • H01L31/048
    • H01L31/0481C08K5/005H01L31/048Y02E10/50C08L27/18
    • 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.
    • 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。