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    • 72. 发明申请
    • Bulk Polymerization of Conjugated Dienes Using a Nickel-Based Catalyst System
    • 使用镍基催化剂体系共轭二烯的大量聚合
    • US20130274430A1
    • 2013-10-17
    • US13976315
    • 2011-12-30
    • Kevin M. McCauleySteven Luo
    • Kevin M. McCauleySteven Luo
    • C08F4/52
    • C08F4/52C08F2/02C08F4/70C08F36/04C08F4/7098
    • A process for preparing a polydiene, the process comprising the steps of (i) providing conjugated diene monomer; (ii) charging a nickel-based catalyst system to the conjugated diene monomer; and (iii) charging a modulating Lewis base to the conjugated diene monomer, to thereby polymerize the conjugated diene monomer in the presence of the modulating Lewis base, where said step of charging a modulating Lewis base is separate from said step of charging a nickel-based catalyst, and where said steps of providing conjugated diene monomer, charging a nickel-based catalyst system and charging a Lewis base form a polymerization mixture that includes less than 20% by weight of organic solvent based on the total weight of the polymerization mixture.
    • 一种制备聚二烯的方法,该方法包括以下步骤:(i)提供共轭二烯单体; (ii)将镍基催化剂体系装入共轭二烯单体; 和(iii)将调节的路易斯碱装入共轭二烯单体,从而在调节路易斯碱的存在下使共轭二烯单体聚合,其中所述调节路易斯碱的装入步骤与将镍 - 并且其中所述提供共轭二烯单体的步骤,加入镍基催化剂体系和加入路易斯碱形成聚合混合物,其包含基于聚合混合物的总重量小于20重量%的有机溶剂。
    • 75. 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.
    • 78. 发明授权
    • Catalyst for the polymerization of conjugated diolefins
    • 用于聚合二烯的聚合的催化剂
    • US3844974A
    • 1974-10-29
    • US32694073
    • 1973-01-26
    • GOODYEAR TIRE & RUBBER
    • THROCKMORTON M
    • C08F36/04B01J11/84
    • C08F36/04C08F4/7098
    • There is disclosed a method for the polymerization of butadiene or butadiene in mixture with other diolefins such as isoprene, 2ethyl butadiene, 2,3-dimethyl butadiene and the like, with a catalyst system comprising (1) an organometallic compound in which the metal is from Groups I, II and III of the Periodic System, (2) a nickel compound from the group of carboxylic acid salts of nickel, organic complex compounds of nickel or nickel carbonyls, (3) a fluorine containing compound from the group of boron trifluoride, metal fluorides and complexes thereof and (4) a compound containing a hydroperoxide group. The polymers contain a high proportion of cis 1,4 content and find use as synthetic rubbers in such products as tires and tire treads.
    • 公开了一种与其它二烯烃如异戊二烯,2-乙基丁二烯,2,3-二甲基丁二烯等混合聚合丁二烯或丁二烯的方法,催化剂体系包括(1)有机金属化合物,其中 金属来自周期性系统的I,II和III族,(2)由镍的羧酸盐,镍或镍羰基的有机络合物组成的镍化合物,(3)一组含氟化合物 三氟化硼,金属氟化物及其络合物和(4)含有氢过氧化物基团的化合物。 这些聚合物含有高比例的顺式1,4含量,并且可用作诸如轮胎和轮胎胎面的产品中的合成橡胶。