4-propoxy-2,2,6,6-tetramethylpiperidine N-oxide

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 哌啶类
• 英文名称: 4-propoxy-2,2,6,6-tetramethylpiperidine N-oxide
• 英文别名: 2,2,6,6-tetramethyl-1-oxido-4-propoxypiperidin-1-ium
• 化学式: C₁₂H₂₅NO₂
• 分子量: 215.336
• InChiKey: JLGYLZJYLZEPSC-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  15
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  30.7
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  4-propoxy-2,2,6,6-tetramethylpiperidine N-oxide 、 三甲基乙酰氯 在 铂 氮气 、 sodium hydroxide 、 magnesium sulfate 、 甲苯 作用下， 以 甲苯 、 水 为溶剂， 反应 1.0h， 生成 2,2,6,6-Tetramethyl-4-propoxypiperidin-1-yl 2,2-dimethylpropionate
  参考文献：
  名称：

  Process for reducing the molecular weight of polypropylene

  摘要：

  本发明涉及选自HALS（立体位阻胺）化合物组和新型羟胺酯的已知羟胺酯的使用，用于控制聚丙烯的降解。

  公开号：

  US07030196B2

文献信息

• Hydroxylamine esters as polymerization initiators
  申请人：——

  公开号：US20030216494A1

  公开（公告）日：2003-11-20

  The invention relates to novel cyclic and open-chain hydroxylamine esters and polymerizable compositions comprising these hydroxylamine esters and an ethylenically unsaturated monomer or oligomer. The invention also relates to use as polymerization initiators and to the use of known hydroxylamine esters selected from the group consisting of HALS compounds and the novel hydroxylamine esters for the controlled degradation of polypropylene and for achieving a controlled increase in the molecular weight of polyethylene.

  该发明涉及新型环状和开链羟胺酯以及包括这些羟胺酯和乙烯基不饱和单体或寡聚物的可聚合组合物。该发明还涉及用作聚合引发剂以及用于控制聚丙烯降解和实现聚乙烯分子量控制增加的已知羟胺酯，所述羟胺酯来自HALS化合物和新颖羟胺酯的组合。
• Process for reducing the molecular weight of polypropylene
  申请人：Ciba Specialty Chemicals Corporation

  公开号：US07030196B2

  公开（公告）日：2006-04-18

  The invention relates to the use of known hydroxylamine esters selected from the group consisting of HALS (sterically hindered amine) compounds and novel hydroxylamine esters for the controlled degradation of polypropylene.

  本发明涉及选自HALS（立体位阻胺）化合物组和新型羟胺酯的已知羟胺酯的使用，用于控制聚丙烯的降解。
• Hydroxylamine esters as polimerization initiators
  申请人：Ciba Specialty Chemicals Holding Inc.

  公开号：EP1655303A2

  公开（公告）日：2006-05-10

  The invention relates to novel cyclic and open-chain hydroxylamine esters and polymerizable compositions comprising these hydroxylamine esters and an ethylenically unsaturated monomer or oligomer. The invention also relates to use as polymerization initiators and to the use of known hydroxylamine esters selected from the group consisting of HALS compounds and the novel hydroxylamine esters for the controlled degradation of polypropylene and for achieving a controlled increase in the molecular weight of polyethylene.

  本发明涉及新型环状和开链羟胺酯以及包含这些羟胺酯和乙烯基不饱和单体或低聚物的可聚合组合物。本发明还涉及作为聚合引发剂的用途，以及从 HALS 化合物和新型羟胺酯组成的组中选出的已知羟胺酯在聚丙烯受控降解和聚乙烯分子量受控增加方面的用途。
• Sterically hindered hydroquinones as antifoulants for unsaturated monomers
  申请人：Ecolab USA Inc.

  公开号：US10155705B2

  公开（公告）日：2018-12-18

  The present invention generally relates to compounds and methods for preventing fouling caused by the radical polymerization of unsaturated compounds, particularly vinyl monomers. More particularly, it relates to the use of hindered hydroquinones to inhibit the polymerization, which result in the fouling of process equipment, and prematurely consume the vinylic monomer products.

  本发明一般涉及防止不饱和化合物，特别是乙烯基单体的自由基聚合引起污垢的化合物和方法。更具体地说，本发明涉及使用受阻对苯二酚来抑制聚合，因为聚合会导致加工设备结垢，并过早消耗乙烯基单体产品。
• Anti-foulant formulation for compressors
  申请人：ECOLAB USA INC.

  公开号：US10745345B2

  公开（公告）日：2020-08-18

  Disclosed are compositions and methods for preventing or reducing polymer formation and polymer deposition in equipment used in petrochemical processes. An antifoulant composition includes a combination of one or more antioxidants; one or more antipolymerants; one or more dispersants; and one or more solvents. A method of preventing or reducing fouling of process equipment used in an industrial process is also described. The method includes introducing into the process equipment an antifoulant composition, the antifoulant composition comprising a combination of one or more antioxidants; one or more antipolymerants; one or more dispersants; and one or more solvents.

  本发明公开了用于防止或减少石化工艺所用设备中聚合物形成和聚合物沉积的组合物和方法。防污剂组合物包括一种或多种抗氧化剂、一种或多种抗聚合剂、一种或多种分散剂和一种或多种溶剂的组合。还描述了一种防止或减少工业加工过程中所用加工设备污垢的方法。该方法包括将防污剂组合物引入工艺设备，防污剂组合物包括一种或多种抗氧化剂、一种或多种抗聚合剂、一种或多种分散剂和一种或多种溶剂的组合。