N-(α-methylbenzyloxy)-di-tert-butylamine | 183194-54-9

• 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: N-(α-methylbenzyloxy)-di-tert-butylamine
• 英文别名: N-tert-butyl-2-methyl-N-(1-phenylethoxy)propan-2-amine
• CAS: 183194-54-9
• 化学式: C₁₆H₂₇NO
• 分子量: 249.396
• InChiKey: GUODQZOIXJJBKM-UHFFFAOYSA-N

物化性质

• 沸点：
  304.1±35.0 °C(Predicted)
• 密度：
  0.927±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  18
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  12.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  二叔丁基硝基氧 、 美巴那肼 在 lead dioxide 作用下， 以 甲苯 为溶剂， 反应 0.5h， 以0.63 g的产率得到N-(α-methylbenzyloxy)-di-tert-butylamine
  参考文献：
  名称：

  Limitations in the Synthesis of High Molecular Weight Polymers via Nitroxide-Mediated Controlled Radical Polymerization:  Experimental Studies

  摘要：

  Limitations associated with preparing high molecular weight polystyrene (PS) by nitroxide-mediated controlled radical polymerization have been tested by considering the role of unimolecular initiator concentration on active polymer radical concentration and thus degree of polymerization. Recent theories ignoring autopolymerization effects lead to the conclusion that, at low monomer conversion, the number-average molecular weight, M., scales with the -2/3 power of unimolecular initiator concentration. Bulk polymerizations were done using either alpha-methylstyryl di-tert-butyl nitroxide (A-T) as unimolecular initiator or PS macroinitiator made from A-T. These initiators allow relatively low reaction temperature (77, 87, or 97degreesC) and moderate, but not eliminate, the contribution of autopolymerization or thermal initiation of polymerization. By varying unimolecular initiator concentration over nearly 4 orders of magnitude, well-controlled PS, with polydispersity index less than or equal to 1.4, can be made with M. values in the range 114 000-238 000 g/mol using either A-T as initiator or a PS macroinitiator. For conditions Yielding controlled PS, in general the experimental M-n-initiator concentration data afforded good agreement with the -2/3 power-law expression and allowed estimation of the equilibrium constant for the capping-uncapping reaction. However, attempts to make controlled, higher molecular weight PS by further reducing initiator concentration resulted in loss of control due to autopolymerization effects. The impact of autopolymerization in producing well-controlled PS was evident from studies yielding a nearly constant conversion as a function of macroinitiator concentration.

  DOI：

  10.1021/ma0300903

文献信息

• RANDOM COPOLYMER FOR FORMING NEUTRAL SURFACE AND METHODS OF MANUFACTURING AND USING THE SAME
  申请人：KANG Min-Hyuck

  公开号：US20120273460A1

  公开（公告）日：2012-11-01

  A random copolymer having a structure represented by the following Formula 1: wherein R is phosphonic acid, Me is a methyl group, x is a number of styrene units, and y is a number of methyl methacrylate units.

  一种随机共聚物的结构式如下所示：式中R为膦酸，Me为甲基，x为苯乙烯单元数，y为甲基丙烯酸甲酯单元数。
• Synthesis and Glass Transition Behavior of High Molecular Weight Styrene/4-Acetoxystyene and Styrene/4-Hydroxystyrene Gradient Copolymers Made via Nitroxide-Mediated Controlled Radical Polymerization
  作者：Maisha K. Gray、Hongying Zhou、SonBinh T. Nguyen、John M. Torkelson

  DOI：10.1021/ma0496652

  日期：2004.7.1

  Styrene (S)/4-acetoxystyrene (AS) gradient copolymers were synthesized by moderate-temperature, nitroxide-mediated controlled radical polymerization. Hydrolysis of styrene/4-acetoxystyrene gradient copolymers produced styrene/4-hydroxystyrene (HS) gradient copolymers. Molecular weight (MW) characterization via gel permeation chromatography demonstrated that these materials were made in a "controlled" manner, while intrinsic viscosity measurements revealed that the MWs exceeded 100 000 g/mol, with apparent viscosity-average MW values ranging between 100 000 and 385 000 g/mol, making these materials the first high MW gradient copolymers ever synthesized. Characterization of the glass transition temperature, T-g, revealed different behavior depending on the type of gradient copolymer produced. Using a normal thermal history for measuring T-g by differential scanning calorimetry (DSC), linear gradient copolymers exhibited one T-g, with a value intermediate to the T(g)s of polystyrene (PS) and poly(4-acetoxystyrene) (PAS) or poly(4-hydroxystyrene) (PHS). In contrast, "blocky" gradient copolymers with overall S content greater than or equal to55 mol % yielded two T(g)s, one near the T-g of PS and the other intermediate to the T(g)s of PS and PAS or PHS, indicating microphase separation. When the cumulative composition of the "blocky" gradient copolymer was majority AS or HS, only one Tg was resolved, with a value near the T-g of PAS or PHS. For S/AS and S/HS gradient copolymers of identical chain length, overall fractional S content, and strength of gradient, physical aging at 90 degreesC provided resolution of a second T-g via DSC, allowing comment on how manifestations of microphase separation depend on gradient structure and the strength of the comonomer repulsive interactions.
• SEALANT COMPOSITION FOR ELECTRONIC DEVICE
  申请人：Henkel AG & Co. KGaA

  公开号：EP2755232B1

  公开（公告）日：2017-02-08
• METHOD FOR PREPARING POLYETHYLENE WITH HIGH MELT STRENGTH
  申请人：Mazzola Nicolas C.

  公开号：US20110171407A1

  公开（公告）日：2011-07-14

  The present invention is a method for increasing the melt strength of a polyethylene resin comprising reacting the polyethylene resin with an alkoxy amine derivative corresponding to the formula: (R 1 )(R 2 )N—O—R 3 where R 1 and R 2 are each independently of one another, hydrogen, C 4 -C 42 alkyl or C 4 -C 42 aryl or substituted hydrocarbon groups comprising O and/or N, and where R 1 and R 2 may form a ring structure together; and where R 3 is hydrogen, a hyrdrocarbon or a substituted hydrocarbon group comprising O and/or N. Preferred groups for R 3 include —C 1 -C 19 alkyl; —C 6 -C 10 aryl; —C 2 -C 19 akenyl; —O—C 1 -C 19 alkyl; —O—C 6 -C 10 aryl; —NH—C 1 -C 19 alkyl; —NH—C 6 -C 10 aryl; —N—(C 1 -C 19 alkyl) 2 . R 3 most preferably contains an acyl group.
• HIGH MELT STRENGTH POLYETHYLENE COMPOSITIONS AND METHODS FOR MAKING THE SAME
  申请人：Demirors Mehmet

  公开号：US20120283390A1

  公开（公告）日：2012-11-08

  The present invention is a method for increasing the melt strength of a polyethylene resin comprising reacting the polyethylene resin with a free radical generator with a decomposition energy in between −50 kJoule/mole and −250 kJoules/mole and a peak decomposition temperature of less than 280 degree C. The resulting resin has increased melt strength with higher ratio of elongational viscosities at 0.1 to 100 rad/s when compared to substantially similar polyethylene resins which have not been reacted with a free radical generator such as an alkoxy amine derivative.