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
    • 1. 发明授权
    • Non-random styrene-butadiene rubber
    • 无规丁苯橡胶
    • US07064171B1
    • 2006-06-20
    • US11232685
    • 2005-09-22
    • Adel Farhan HalasaWen-Liang HsuDavid Michael Smith, Sr.Warren James BuschJohn Joseph Andre VertheScott Edwards Johnson
    • Adel Farhan HalasaWen-Liang HsuDavid Michael Smith, Sr.Warren James BuschJohn Joseph Andre VertheScott Edwards Johnson
    • C08F236/10
    • C08L9/06B60C1/0016C08F236/10C08L7/00C08L9/00C08L97/005Y10S152/905C08L2666/02C08L2666/08
    • The present invention reveals a tire having a tread that is comprised of (1) 30 phr to 80 phr of a non-random styrene-butadiene rubber comprised of polymer chains that are derived from styrene and 1,3-butadiene, wherein from about 10 weight percent to about 50 weight percent of the repeat units in the styrene-butadiene rubber are derived from styrene, wherein from about 60 weight percent to about 90 weight percent of the repeat units in the styrene-butadiene rubber are derived from 1,3-butadiene, wherein from about 30 weight percent to about 50 weight percent of the styrene repeat units are in sequences containing 5 to 20 styrene repeat units, wherein the bound styrene content found in the first half of the polymer chains differs from the bound styrene content found in the second half of the polymer chains by at least 5 weight percent, wherein the styrene-butadiene rubber has a 1,2-vinyl content which is within the range of about 8 percent to about 20 percent, wherein the styrene-butadiene rubber has a number average molecular weight which is within the range of 200,000 to 475,000, and wherein the styrene-butadiene rubber has a glass transition temperature which is within the range of −82° C. to −50° C. and (2) 20 phr to 70 phr of polybutadiene. The tire tread formulation can optionally contain silica and lignin.
    • 本发明揭示了具有胎面的轮胎,该胎面由(1)30phr至80phr由衍生自苯乙烯和1,3-丁二烯的聚合物链组成的非无规丁苯橡胶组成,其中约10 苯乙烯 - 丁二烯橡胶中重复单元的重量百分比至约50重量%衍生自苯乙烯,其中苯乙烯 - 丁二烯橡胶中重复单元的约60重量%至约90重量% 丁二烯,其中约30重量%至约50重量%的苯乙烯重复单元是含有5至20个苯乙烯重复单元的序列,其中在聚合物链的前半部分中发现的结合苯乙烯含量与发现的结合的苯乙烯含量不同 在所述聚合物链的后半部分中至少5重量%,其中所述苯乙烯 - 丁二烯橡胶具有在约8%至约20%范围内的1,2-乙烯基含量,其中所述苯乙烯 - 丁二烯 iene橡胶的数均分子量在200,000至475,000的范围内,其中丁苯橡胶的玻璃化转变温度在-82℃至-50℃的范围内,(2 )20phr至70phr的聚丁二烯。 轮胎胎面配方可任选地含有二氧化硅和木质素。
    • 4. 发明授权
    • Synthesis of 1,4-polybutadiene
    • US07081504B2
    • 2006-07-25
    • US10929977
    • 2004-08-30
    • Michael Joseph RachitaScott Edwards Johnson
    • Michael Joseph RachitaScott Edwards Johnson
    • C08F2/06C08F136/06
    • C08F36/06C08F136/06Y10S526/907C08F4/7098
    • This invention is based upon the unexpected discovery that alkylated diphenylamines can be used in conjunction with nickel based catalyst systems which contain (a) an organonickel compound, (b) an organoaluminum compound, and (c) a fluorine containing compound to produce cis-1,4-polybutadiene having reduced molecular weight and an increased level of branching. This results in the cis-1,4-polybutadiene exhibiting good processability without sacrificing cold flow characteristics. Additionally, the alkylated diphenylamine which remains in the rubber acts in a manner which provides it with antioxidant protection. In other words, the use of alkylated diphenylamines accomplishes the three major objectives that are realized by employing para-styrenated diphenylamines (reduced molecular weight, regulated polymer macrostructure through branching and antidegradant protection). However, the utilization of alkylated diphenylamines, unlike para-styrenated diphenylamines, offers the additional advantage of being soluble in aliphatic solvents. By virtue of this increased level of solubility in aliphatic solvents, such as hexane, alkylated diphenylamines can be employed at greatly reduced levels of aromatic solvents. Likewise, when mixed catalyst streams containing alkylated diphenyl amines are combined precipitation is minimized compared to para-styrenated diphenylamine significantly improving issues related to fouling. The subject invention more specifically discloses a process for producing cis-1,4-polybutadiene having a reduced molecular weight and improved processability which comprises polymerizing 1,3-butadiene in the presence of (a) an organonickel compound, (b) an organoaluminum compound, (c) a fluorine containing compound, and (d) an alkylated diphenylamine; wherein the alkylated diphenylamine has alkyl groups that contain from 2 to 18 carbon atoms, and wherein the organoaluminum compound and the fluorine containing compound are brought together in the presence of the alkylated diphenylamine.
    • 5. 发明授权
    • Solid/liquid phase transfer system
    • 固相/液相转移系统
    • US06294683B1
    • 2001-09-25
    • US09456764
    • 1999-12-07
    • Scott Edwards JohnsonDane Kenton ParkerNiranjan Shah
    • Scott Edwards JohnsonDane Kenton ParkerNiranjan Shah
    • C07F708
    • C07F7/1892
    • The present invention discloses a technique for reacting a first liquid chemical compound with a second liquid chemical compound which comprises (1) supporting the first liquid chemical compound on a solid support; (2) subsequently bringing the solid support into contact with the second liquid chemical compound; and (3) allowing the first chemical compound to react with the second chemical compound in the presence of a phase transfer catalyst to produce a reaction product. This technique is particularly useful in the synthesis of sulfur containing organosilicon compounds of the formula Z-Alk-Sn-Alk-Z wherein Z is selected from the group consisting of wherein R1 is an alkyl group of 1 to 4 carbon atoms, cyclohexyl or phenyl; wherein R2 is an alkoxy group of 1 to 8 carbon atoms or a cycloalkoxy group of 5 to 8 carbon atoms; wherein Alk is a divalent hydrocarbon of 1 to 18 carbon atoms; and wherein n is an integer of 2 to 8. For instance, such sulfur containing organosilicon compounds can be made by reacting aqueous solutions of various polysulfidic anions in saturated sodium chloride brine solutions with chloropropyltriethoxysilane (CPTES) supported on carbon black in the presence of a phase transfer catalyst.
    • 本发明公开了一种使第一液体化合物与第二液体化合物反应的技术,其包括(1)在固体载体上支撑第一液体化合物; (2)随后将固体支持物与第二液体化合物接触; 和(3)允许第一化合物在相转移催化剂存在下与第二化合物反应以产生反应产物。 该方法特别适用于合成式Z-Alk-Sn-Alk-Z的含硫有机硅化合物,其中Z选自其中R1是1-4个碳原子的烷基,环己基或苯基; 其中R2为1-8个碳原子的烷氧基或5-8个碳原子的环烷氧基; 其中Alk是1至18个碳原子的二价烃; 并且其中n为2至8的整数。例如,这种含硫有机硅化合物可以通过使饱和氯化钠盐水溶液中的各种多硫代阴离子的水溶液与负载在炭黑上的氯丙基三乙氧基硅烷(CPTES)反应, 相转移催化剂。