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    • 16. 发明授权
    • Anionic polymerization of cis- and trans-1,3-pentadiene from a mixture
of saturated and unsaturated hydrocarbons
    • 来自饱和和不饱和烃的混合物的顺式和反式-1,3-戊二烯的阴离子聚合
    • US4482771A
    • 1984-11-13
    • US559525
    • 1983-12-08
    • John W. BozzelliKent S. DennisFelipe A. Donate
    • John W. BozzelliKent S. DennisFelipe A. Donate
    • C08F4/46C08F36/00C08F36/04C08F240/00C07C1/16C07C2/02C07C2/74
    • C08F36/045
    • 1,3-Pentadiene is polymerized in an inert gaseous atmosphere from a mixture of saturated and unsaturated hydrocarbon molecules. At least 50 percent by weight of said molecules have 5 carbon atoms. An anionic polymerization initiator in conjunction with an organic polar solvent is used to effect polymerization. Cyclopentadiene, active hydrogen compounds and other polymerization-terminating compounds may be inactivated and separated from the mixture of hydrocarbon compounds before starting polymerization. As an alternative, inactivation and separation of cyclopentadiene, active hydrogen compounds and polymerization-terminating compounds may be omitted provided the anionic polymerization initiator is employed in an amount to (a) inactivate such compounds and (b) initiate polymerization of 1,3-pentadiene.The polymer of 1,3-pentadiene so prepared is then hydrogenated or functionalized by further reaction.
    • 1,3-丁二烯在惰性气体气氛中由饱和和不饱和烃分子的混合物聚合。 所述分子的至少50重量%具有5个碳原子。 使用与有机极性溶剂结合的阴离子聚合引发剂进行聚合。 在开始聚合之前,可以将环戊二烯,活性氢化合物和其它聚合终止化合物失活并与烃化合物的混合物分离。 作为替代方案,可以省略环戊二烯,活性氢化合物和聚合终止化合物的灭活和分离,只要阴离子聚合引发剂的用量为(a)灭活这些化合物和(b)引发1,3-戊二烯的聚合 。 然后将如此制备的1,3-戊二烯的聚合物通过进一步的反应氢化或官能化。
    • 18. 发明授权
    • Green strength of elastomers
    • 弹性体的绿色强度
    • US4124546A
    • 1978-11-07
    • US692267
    • 1976-06-03
    • Diego C. Rubio, Jr.Richard G. BauerRichard M. Scriver, Jr.
    • Diego C. Rubio, Jr.Richard G. BauerRichard M. Scriver, Jr.
    • C08F36/04C08L21/00C08L7/00C08L9/00
    • C08F36/045C08L21/00
    • Improved green strength of elastomers made from monomers selected from the class consisting of at least one conjugated diene having from 4 to 10 carbon atoms, olefins having from 2 to 14 carbon atoms along with a diene having from 4 to 6 carbon atoms, and combinations thereof, is achieved by adding an amount of a polydimethylbutadiene compound to form a blend having a glass transition temperature of from about 0.degree. C to about -100.degree. C. The polydimethylbutadiene compound may be merely the homopolymer of dimetylbutadiene, the copolymer, the terpolymer or the tetrapolymer of dimethylbutadiene in various combinations with monomers such as butadiene, isoprene, piperylene, acrylonitrile, vinylidene chloride, vinyl pyridine, methacrylic acid and vinyl substituted aromatic compounds.
    • 由选自至少一种具有4至10个碳原子的共轭二烯,具有2至14个碳原子的烯烃以及具有4至6个碳原子的二烯的单体制成的弹性体的改善的生坯强度,以及其组合 通过加入一定量的聚二甲基丁二烯化合物以形成玻璃化转变温度为约0℃至约-100℃的共混物来实现。聚二甲基丁二烯化合物可以仅仅是二甲基丁二烯的均聚物,共聚物,三元共聚物或 与丁二烯,异戊二烯,戊间二烯,丙烯腈,偏二氯乙烯,乙烯基吡啶,甲基丙烯酸和乙烯基取代的芳族化合物等单体的各种组合的二甲基丁二烯的四元共聚物。