alpha-Methyl styrene butadiene | 25034-68-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: alpha-Methyl styrene butadiene
• 英文别名: buta-1,3-diene;prop-1-en-2-ylbenzene
• CAS: 25034-68-8
• 化学式: C13H16
• 分子量: 172.27
• InChiKey: QSYBDNNHWODCCJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.08
• 重原子数：
  13
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.08
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为产物：
  描述：

  2-苯基-1-丙烯 、 1,3-丁二烯 、 水 在 氮 作用下， 以 正己烷 为溶剂， 以to give a 10/90 ratio of α-methyl styrene/butadiene的产率得到alpha-Methyl styrene butadiene
  参考文献：
  名称：

  Catalyst system for the synthesis of rubbery polymers

  摘要：

  本发明涉及一种阴离子聚合技术，用于合成共轭双烯单体的橡胶聚合物，例如α-甲基苯乙烯和1,3-丁二烯的橡胶共聚物。这些橡胶共聚物展现出在轮胎胎面橡胶化合物中利用的优异性能组合。它们具有高的顺式异构体含量，导致良好的胎面磨损特性和广泛的分子量分布，增强了可加工性。本发明更具体地披露了一种合成具有广泛分子量分布且特别适用于轮胎胎面橡胶化合物的橡胶聚合物的过程，该过程包括至少一种共轭双烯单体在有机溶剂中聚合，在(a)双烷基镁化合物和(b)由选自碱金属烷氧化物、碱金属苯氧化物、碱金属亚砜、碱金属磺酸盐、碱金属羧酸盐、烷基取代碱金属苯氧化物、碱金属烷胺和碱金属双烷基胺组成的催化剂体系的存在下进行；其中碱金属含量化合物与双烷基镁化合物的摩尔比在约6:1至约1:5的范围内。在合成含α-甲基苯乙烯的橡胶共聚物的情况下，碱金属含量化合物中的碱金属通常是钾、铷或铯，其中铯最受欢迎。

  公开号：

  US05629256A1

文献信息

• Process for the synthesis of rubbery polymers
  申请人：The Goodyear Tire & Rubber Company

  公开号：US05623035A1

  公开（公告）日：1997-04-22

  The subject invention relates to an anionic polymerization technique for synthesizing rubbery polymers of conjugated diolefin monomers, such as a rubbery copolymer of .alpha.-methylstyrene and 1,3-butadiene. These rubbery copolymers exhibit an excellent combination of properties for utilization in tire tread rubber compounds. They have high trans-isomer contents which leads to good treadwear characteristics and a broad molecular weight distribution which enhances processability. This invention more specifically discloses a process for the synthesis of rubbery polymers which have a broad molecular weight distribution and which are particularly useful in tire tread rubber compounds, said process comprising the polymerization of at least one conjugated diolefin monomer in an organic solvent in the presence of a catalyst system which is comprised of (a) a dialkyl magnesium compound and (b) an alkali metal containing compound selected from the group consisting of alkali metal alkoxides, alkali metal phenoxides, alkali metal sulfoxides, alkali metal sulfonates, alkali metal carboxylates, alkyl substituted alkali metal phenoxides, alkali metal alkylamines, and alkali metal dialkylamines; wherein the molar ratio of the alkali metal containing compound to the dialkyl magnesium compound is within the range of about 6:1 to about 1:5. In cases where rubbery copolymers containing .alpha.-methylstyrene are being synthesized, the alkali metal in the alkali metal containing compound will normally be potassium, rubidium, or cesium, with cesium being most preferred.

  本发明涉及一种阴离子聚合技术，用于合成共轭双烯单体的橡胶聚合物，例如α-甲基苯乙烯和1,3-丁二烯的橡胶共聚物。这些橡胶共聚物表现出优异的性能组合，可用于轮胎胎面橡胶复合材料。它们具有高的反式异构体含量，导致良好的耐磨性能和广泛的分子量分布，增强了加工性能。本发明具体揭示了一种合成具有广泛分子量分布且特别适用于轮胎胎面橡胶复合材料的橡胶聚合物的工艺，该工艺包括在有机溶剂中聚合至少一种共轭双烯单体，在(a)二烷基镁化合物和(b)含有碱金属的化合物的催化剂体系存在下进行，所述碱金属含有的化合物选自碱金属烷氧化物，碱金属苯氧化物，碱金属亚砜，碱金属磺酸盐，碱金属羧酸盐，烷基取代的碱金属苯氧化物，碱金属烷基胺和碱金属二烷基胺，其中碱金属含量化合物与二烷基镁化合物的摩尔比在约6:1至约1:5的范围内。在合成含α-甲基苯乙烯的橡胶共聚物的情况下，碱金属通常为钾、铷或铯，其中铯最为优选。
• Pneumatic tire
  申请人：The Goodyear Tire & Rubber Company

  公开号：US05665826A1

  公开（公告）日：1997-09-09

  The subject invention relates to an anionic polymerization technique for synthesizing rubbery polymers of conjugated diolefin monomers, such as an rubbery copolymer of .alpha.-methylstyrene and 1,3-butadiene. These rubbery copolymers exhibit an excellent combination of properties for utilization in tire tread rubber compounds. They have high trans-isomer contents which leads to good treadwear characteristics and a broad molecular weight distribution which enhances processability. This invention more specifically discloses a process for the synthesis of rubbery polymers which have a broad molecular weight distribution and which are particularly useful in tire tread rubber compounds, said process comprising the polymerization of at least one conjugated diolefin monomer in an organic solvent in the presence of a catalyst system which is comprised of (a) a dialkyl magnesium compound and (b) an alkali metal containing compound selected from the group consisting of alkali metal alkoxides, alkali metal phenoxides, alkali metal sulfoxides, alkali metal sulfonates, alkali metal carboxylates, alkyl substituted alkali metal phenoxides, alkali metal alkylamines, and alkali metal dialkylamines; wherein the molar ratio of the alkali metal containing compound to the dialkyl magnesium compound is within the range of about 6:1 to about 1:5. In cases where rubbery copolymers containing .alpha.-methylstyrene are being synthesized the alkali metal in the alkali metal containing compound will normally be potassium, rubidium, or cesium with cesium being most preferred.

  本发明涉及一种阴离子聚合技术，用于合成共轭二烯单体的橡胶聚合物，例如α-甲基苯乙烯和1,3-丁二烯的橡胶共聚物。这些橡胶共聚物具有优异的性能组合，适用于轮胎胎面橡胶化合物。它们具有高的顺式异构体含量，导致良好的耐磨性能和广泛的分子量分布，提高了加工性能。本发明更具体地揭示了一种合成具有广泛分子量分布且特别适用于轮胎胎面橡胶化合物的橡胶聚合物的方法，该方法包括在有机溶剂中聚合至少一种共轭二烯单体，存在以下催化剂体系：（a）二烷基镁化合物和（b）含有碱金属的化合物，所述碱金属包括碱金属烷氧化物、碱金属苯氧化物、碱金属亚砜、碱金属磺酸盐、碱金属羧酸盐、烷基取代的碱金属苯氧化物、碱金属烷胺和碱金属二烷基胺。其中，碱金属含量化合物与二烷基镁化合物的摩尔比在约6:1到约1:5的范围内。在合成含α-甲基苯乙烯的橡胶共聚物的情况下，碱金属含量化合物中的碱金属通常为钾、铷或铯，其中铯最为优选。