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    • 5. 发明申请
    • POLYOLEFIN ELASTOMER BLENDS EXHIBITING IMPROVED PROPERTIES
    • POLYOLEFIN ELASTOMER BLENDS展现改进的特性
    • WO1997026297A1
    • 1997-07-24
    • PCT/US1997001180
    • 1997-01-22
    • THE DOW CHEMICAL COMPANYPARIKH, Deepak, R.CHUM, Pak-Wing, S.JAIN, PradeepPATEL, Rajen, M.CLAYFIELD, Timothy, E.MCKEAND, Thomas, J., Jr.KUMMER, Kyle, G.KHAN, Wasif, AhmedMARKOVICH, Ronald, P.
    • THE DOW CHEMICAL COMPANY
    • C08L23/16
    • C08L23/0815C08L91/00C08L2205/02C08L2666/06C08L2666/02
    • Polymer mixtures are disclosed which comprise at least one homogeneously branched ethylene polymer (A) and at least one ethylene polymer (B) having a crystallinity which is at least 7 percent greater than the crystallinity of polymer (A) with certain provisos. A process for making a molded article using the disclosed polymer mixtures is disclosed as well as films, film layers, coatings and molded articles formed from those mixtures. These mixtures have several advantages over polymer compositions of the prior art, including improved properties at elevated temperatures such as improved softening point under load, improved hardness, improved toughness, improved 100 percent modulus of elasticity, improved compression set, improved ability to prevent oil bleed out at lower temperatures when the mixture contains oil and reduced injection molding cycle time. The mixtures retain their performance advantages even when substantial amounts of additives such as oil and filler are incorporated into the mixture. The mixtures may also be cross-linked after they are formed into the shape of an article to form vulcanized elastomeric products. The polymer mixtures have utility in a variety of applications.
    • 公开了包含至少一种均匀支化的乙烯聚合物(A)和至少一种乙烯聚合物(B)的聚合物混合物,其结晶度比聚合物(A)的结晶度大至少7%,具有某些条件。 公开了使用所公开的聚合物混合物制备模塑制品的方法以及由这些混合物形成的薄膜,薄膜层,涂层和模塑制品。 这些混合物具有优于现有技术的聚合物组合物的几个优点,包括在升高的温度下改进的性能,例如负载下改进的软化点,改进的硬度,改进的韧性,改进的100%弹性模量,改进的压缩永久变形,改进的防止油渗出的能力 当混合物含有油和降低注塑周期时,在较低的温度下出来。 即使将大量的添加剂如油和填料加入到混合物中,混合物仍保持其性能优点。 在混合物形成制品形状之后也可以交联以形成硫化的弹性体产品。 聚合物混合物可用于各种应用。
    • 9. 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
    • WO2013006616A1
    • 2013-01-10
    • PCT/US2012/045396
    • 2012-07-03
    • DOW GLOBAL TECHNOLOGIES LLCCHEN, XumingCHUM, Pak-Wing, S.HOWARD, Kevin, E.LOPEZ, Leonardo, C.SUMNER, William, C.WU, Shaofu
    • CHEN, XumingCHUM, Pak-Wing, S.HOWARD, Kevin, E.LOPEZ, Leonardo, C.SUMNER, William, C.WU, Shaofu
    • B05D7/04H01L31/0216H01L31/0232B32B27/30H01L31/048C08K5/00C08L27/18
    • 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 degradation 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UV保护组分的含氟聚合物组合物意外地改善了抗紫外线可能引起的黑化,着色或其它降解的能力。 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。