会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 13. 发明申请
    • Group III-B metal catalyst system
    • III-B族金属催化剂体系
    • US20060020090A1
    • 2006-01-26
    • US11240862
    • 2005-09-30
    • Wen-Liang HsuAdel HalasaChad Jasiunas
    • Wen-Liang HsuAdel HalasaChad Jasiunas
    • C08F4/44B01J31/00
    • C08F36/04C08F136/06C08F136/08C08F4/58C08F4/545C08F236/06C08F236/08
    • The subject invention relates to a process for preparing a catalyst system that comprises the sequential steps of (I) reacting an organometalic compound that contains a metal from Group III-B of the Periodic System with an organoaluminum compound at a temperature which is within the range of 50° C. to 100° C. to produce an aluminum modified Group III-B metal containing catalyst component, and (II) mixing the aluminum modified Group III-B metal containing catalyst component with a halogen containing compound to produce the Group III-B metal containing catalyst system, wherein the catalyst system is void of compounds selected from the group consisting of aliphatic alcohols, cycloaliphatic alcohols, aliphatic thiols, cycloaliphatic thiols, trialkyl silanols, and triaryl silanols, wherein the organometalic compound that contains a metal from Group III-B of the Periodic System is reacted with the organoaluminum compound in the absence of conjugated diene monomers, and wherein the catalyst system is prepared in the absence of compounds that contain labile halogen atoms.
    • 本发明涉及制备催化剂体系的方法,其包括以下顺序步骤:(I)使含有周期系统的III-B族金属的有机金属化合物与有机铝化合物在一定范围内的温度下反应 50℃至100℃,以制备含铝改性的含III-B族金属的催化剂组分,和(II)将经改性的含III-B族金属的催化剂组分与含卤素的化合物混合以制备III族 -B金属的催化剂体系,其中所述催化剂体系没有选自脂族醇,脂环族醇,脂族硫醇,脂环族硫醇,三烷基硅烷醇和三芳基硅烷醇的化合物,其中含有组中的金属的有机金属化合物 周期性体系的III-B在不存在共轭二烯单体的情况下与有机铝化合物反应,并且其中催化剂 在没有含有不稳定卤素原子的化合物的情况下制备体系。
    • 14. 发明申请
    • Tire with tread of specialized trans 1,4-polybutadiene polymer and CIS 1,4-polyisoprene natural rubber
    • 专用反式1,4-聚丁二烯聚合物和CIS 1,4-聚异戊二烯天然橡胶的胎面轮胎
    • US20050245688A1
    • 2005-11-03
    • US10837740
    • 2004-05-03
    • Paul SandstromAdel HalasaWen-Liang HsuRoger BeersChad Jasiunas
    • Paul SandstromAdel HalasaWen-Liang HsuRoger BeersChad Jasiunas
    • B60C1/00C08K3/04C08K3/36C08L7/00C08L9/00C08L9/06C08L21/00
    • B60C1/0016C08K3/04C08K3/36C08L7/00C08L9/06C08L21/00C08L2666/02C08L2666/08
    • This invention relates to a tire with a tread of a natural rubber-rich rubber composition. A partial replacement of the natural rubber in the tire tread is accomplished by an inclusion of a relatively low Mooney viscosity specialized trans 1,4-polybutadiene. The tire tread rubber composition is comprised of a blend of the specialized trans 1,4-polybutadiene polymer and cis 1,4-polyisoprene natural rubber optionally together with at least one additional diene-based elastomer in which the natural rubber remains a major portion of the elastomers in the tread rubber composition. A significant aspect of the invention is a partial replacement of natural cis 1,4-polyisoprene rubber in the tread rubber composition. The specialized trans 1,4-polybutadiene polymer has a relatively low Mooney (ML1+4), 100° C., viscosity within a range of 25 to 55. The specialized trans 1,4-polybutadiene polymer has a weight average molecular weight (Mw) of less than 220,000, preferably within a range of from 100,000 to 220,000, a number average molecular weight (Mn) of less than 120,000, preferably within a range of from 60,000 to 120,000 and a microstructure comprised of a trans 1,4-isomeric unit content in a range of from 75 to 85 percent, a cis 1,4-isomeric unit content in a range of from 10 to 20 percent and a vinyl 1,2-content in a range of from 3 to 5 percent.
    • 本发明涉及具有天然橡胶丰富橡胶组合物的胎面的轮胎。 轮胎胎面中天然橡胶的部分替换通过包含相对较低的门尼粘度的特殊的反式1,4-聚丁二烯来实现。 轮胎胎面橡胶组合物由专门的反式1,4-聚丁二烯聚合物和顺式1,4-聚异戊二烯天然橡胶的混合物组成,任选地与至少一种另外的二烯基弹性体共混,其中天然橡胶保留主要部分 胎面橡胶组合物中的弹性体。 本发明的一个重要方面是在胎面橡胶组合物中部分替代天然顺式1,4-聚异戊二烯橡胶。 专用的反式1,4-聚丁二烯聚合物具有相对较低的门尼(ML1 + 4),100℃,粘度在25至55的范围内。专用的反式1,4-聚丁二烯聚合物具有重均分子量( Mw)小于220,000,优选在100,000至220,000的范围内,数均分子量(Mn)小于120,000,优选在60,000至120,000的范围内,以及由反式1,4- 异构单元含量在75至85%的范围内,顺式1,4-异构体单元含量在10至20%范围内,乙烯基1,2-含量在3至5%的范围内。
    • 15. 发明申请
    • Synthetic polyisoprene rubber
    • 合成聚异戊二烯橡胶
    • US20050137338A1
    • 2005-06-23
    • US10942517
    • 2004-09-16
    • Adel HalasaWen-Liang HsuAaron RybaJin-Ping ZhouChad JasiunasPaul Sandstrom
    • Adel HalasaWen-Liang HsuAaron RybaJin-Ping ZhouChad JasiunasPaul Sandstrom
    • B01J31/02B01J31/04B01J31/12B01J31/14B60C1/00C08F36/04C08L9/00C08L21/00C08F4/44B01J31/00C08F8/00
    • B01J31/143B01J31/04B60C1/0016C08F36/04C08L9/00C08L21/00C08F4/545C08F4/44C08L2666/08
    • The neodymium catalyst system prepared by the technique of this invention can be used in the polymerization of isoprene monomer into synthetic polyisoprene rubber having an extremely high cis-microstructure content and high stereo regularity. This polyisoprene rubber will crystallize under strain and can be compounded into rubber formulations in a manner similar to natural rubber. This invention more specifically discloses a process for preparing a neodymium catalyst system which comprises (1) reacting a neodymium carboxylate with an organoaluminum compound in an organic solvent to produce neodymium-aluminum catalyst component, and (2) subsequently reacting the neodymium-aluminum catalyst component with an elemental halogen to produce the neodymium catalyst system. The present invention further discloses a synthetic polyisoprene rubber which is comprised of repeat units that are derived from isoprene, wherein the synthetic polyisoprene rubber has a cis-microstructure content which is within the range of 98.0% to 99.5%, a 3,4-microstructure content which is within the range of 0.5% to 2.0%, and a trans-microstructure content which is within the range of 0.0% to 0.5%.
    • 通过本发明技术制备的钕催化剂体系可用于将异戊二烯单体聚合成具有非常高的顺式微结构含量和高立体规律性的合成聚异戊二烯橡胶。 该聚异戊二烯橡胶将在应变下结晶,并且可以以与天然橡胶相似的方式配合成橡胶制剂。 本发明更具体地公开了一种制备钕催化剂体系的方法,其包括:(1)使羧酸钕与有机铝化合物在有机溶剂中反应以制备钕 - 铝催化剂组分,和(2)随后使钕 - 铝催化剂组分 用元素卤素制备钕催化剂体系。 本发明还公开了一种合成聚异戊二烯橡胶,其由衍生自异戊二烯的重复单元组成,其中合成聚异戊二烯橡胶的顺式微结构含量在98.0%至99.5%的范围内,3,4-微结构 含量在0.5%至2.0%的范围内,反式微结构含量在0.0%至0.5%的范围内。
    • 17. 发明申请
    • Process for improved coupling of rubbery polymers
    • 改进橡胶状聚合物偶联的方法
    • US20050049141A1
    • 2005-03-03
    • US10966192
    • 2004-10-15
    • Adel HalasaWen-Liang Hsu
    • Adel HalasaWen-Liang Hsu
    • C08F4/48C08F297/04B01J31/00
    • C08F297/04C08F297/044
    • Rubbery polymers made by anionic polymerization can be coupled with fin halides or silicon halides to improve the characteristics of the rubber for use in some applications, such as fire treads. In cases where the rubbery polymer was synthesized utilizing a polar modifier it is difficult to attain a high level of coupling. This invention is based upon the unexpected finding that coupling efficiency can be significantly improved by conducting the coupling reaction in the presence of a lithium salt of a saturated aliphatic alcohol, such as lithium t-amylate. This invention discloses a process for coupling a living rubbery polymer that comprises reacting the living rubbery polymer with coupling agent selected from the group consisting of tin halides and silicon halides in the presence of a lithium salt of a saturated aliphatic alcohol. The lithium salt of the saturated aliphatic alcohol can be added immediately prior to the coupling reaction or it can be present throughout the polymerization and coupling process. Lithium t-amylate reacts with water to form t-amyl alcohol during steam stripping. Since t-amyl alcohol forms an azeotrope with hexane, it co-distills with hexane and can contaminate recycle feed streams. This problem of recycle stream contamination can be solved by using metal salts of cyclic alcohols that do not co-distill with hexane or form compounds during steam stripping which co-distill with hexane. Thus, the use of metal salts of cyclic alcohols is preferred for this reason and because they are considered to be environmentally safe.
    • 通过阴离子聚合制备的橡胶聚合物可与翅片卤化物或硅卤化物结合,以改善用于某些应用中的橡胶的特性,例如防火踏面。 在使用极性改性剂合成橡胶状聚合物的情况下,难以获得高水平的偶联。 本发明基于意想不到的发现,通过在饱和脂肪醇的锂盐如叔戊醇锂的存在下进行偶联反应可以显着改善偶联效率。 本发明公开了一种使活性橡胶状聚合物偶合的方法,该方法包括在饱和脂肪醇的锂盐存在下使活性橡胶状聚合物与选自锡卤化物和卤化硅的偶合剂反应。 饱和脂肪醇的锂盐可以在偶联反应之前立即加入,或者可以在整个聚合和偶联过程中存在。 在蒸汽汽提期间,叔戊醇钠与水反应形成叔戊醇。 由于叔戊醇与己烷形成共沸物,因此与己烷共蒸馏,可能污染再循环进料流。 循环流污染的这个问题可以通过使用在与汽油共蒸馏的汽提过程中不与己烷共蒸馏或形成化合物的环醇的金属盐来解决。 因此,由于这个原因,优选使用环状醇的金属盐,并且因为它们被认为是环境安全的。