(S)-2-methylglutaric anhydride | 118139-23-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 内酯类
• 英文名称: (S)-2-methylglutaric anhydride
• 英文别名: (S)-2-methyl-glutaric acid-anhydride；(S)-2-Methyl-glutarsaeure-anhydrid；S-(+)-α-Methylglutarsaeureanhydrid；(3S)-3-methyloxane-2,6-dione
• CAS: 118139-23-4
• 化学式: C₆H₈O₃
• 分子量: 128.128
• InChiKey: YQLVIOYSGHEJDA-BYPYZUCNSA-N

物化性质

• 沸点：
  245.2±9.0 °C(Predicted)
• 密度：
  1.159±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.5
• 重原子数：
  9
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (S)-2-methylglutaric anhydride 在 氯化亚砜 作用下， 反应 2.0h， 生成 (-)-(S)-3-methylhexanedioic acid
  参考文献：
  名称：

  Correlation of α-Asymmetric Carbon Atom of α-Methylglutaric Acid to Methyladipic Acid: a Correction

  摘要：

  DOI：

  10.1246/bcsj.41.1482
• 作为产物：
  描述：

  (S)-2-甲基戊二酸 在 乙酰氯 作用下， 生成 (S)-2-methylglutaric anhydride
  参考文献：
  名称：

  Berner; Leonardsen, 1934, vol. 7, p. 125,127

  摘要：

  DOI：

文献信息

• DRILLING FLUID ADDITIVE COMPOSITION AND HIGH TEMPERATURE RESISTANT CLAY-FREE WHOLE-OIL-BASED DRILLING FLUID
  申请人：China University of Petroleum (Beijing)

  公开号：EP3202871A1

  公开（公告）日：2017-08-09

  The present invention relates to the field of petrochemical drilling and discloses a drilling fluid additive composition. The composition contains rheological modifier, emulsifier and tackifier. Among them, the rheological modifier is dimer acid-organic amine copolymer comprising structural units from dimer acid, structural units from alkylamine and structural units from arylamine; the tackifier is modified polysiloxane nano-particles, and the modifying group Z on the polysiloxane nano-particles is the emulsifier is one or more of the compounds represented by the following Formula (1). The present invention further provides a high temperature resistant clay-free whole-oil-based drilling fluid containing the foregoing composition. Through synergistic effect of the rheological modifier, the emulsifier and the tackifier in the composition, the present invention obtains a clay-free whole-oil-based drilling fluid with desirable suspending power and temperature resistance.

  本发明涉及石油化工钻井领域，公开了一种钻井液添加剂组合物。该组合物包含流变改性剂、乳化剂和增粘剂。其中，流变改性剂为二聚酸-有机胺共聚物，包括二聚酸结构单元、烷基胺结构单元和芳基胺结构单元；增粘剂为改性聚硅氧烷纳米颗粒，聚硅氧烷纳米颗粒上的改性基团 Z 为 乳化剂为下式（1）所代表的一种或多种化合物。本发明进一步提供了一种含有上述组合物的耐高温无粘土全油基钻井液。通过组合物中流变修饰剂、乳化剂和增粘剂的协同作用，本发明获得了一种具有理想悬浮力和耐温性的无粘土全油基钻井液。
• DRILLING FLUID ADDITIVE COMPOSITION, AND OIL-BASED DRILLING FLUID AND USE THEREOF
  申请人：China University of Petroleum (Beijing)

  公开号：EP3252125A1

  公开（公告）日：2017-12-06

  The present invention relates to the well drilling field in petroleum industry, in particular to a drilling fluid additive composition that contains a lubricant, an emulsifier, and a rheological modifier, wherein, the lubricant contains: graphite oxide and a biquaternary ammonium salt compound in which the cation part is represented by formula (1); the emulsifier is one or more of compounds represented by formula (I); the rheological modifier is a dimer acid-organic amine copolymer comprising structural units from dimer acid, structural units from alkylamine and structural units from arylamine. The present invention further provides an oil-based drilling fluid containing the composition and a use thereof. The oil-based drilling fluid containing the composition provided in the present invention obtains a lower lubrication coefficient, and favorable rheological property and thermostability, and is suitable for use in operation at a high temperature.

  本发明涉及石油工业中的钻井领域，尤其涉及一种包含润滑剂、乳化剂和流变修饰剂的钻井液添加剂组合物，其中，润滑剂包含：氧化石墨和一种双季铵盐化合物，其中阳离子部分由式（1）表示；乳化剂是一种或多种由式（I）表示的化合物；流变修饰剂是一种二聚酸-有机胺共聚物，包括来自二聚酸的结构单元、来自烷基胺的结构单元和来自芳基胺的结构单元。本发明进一步提供了一种含有该组合物的油基钻井液及其用途。含有本发明提供的组合物的油基钻井液可获得较低的润滑系数、良好的流变性能和热稳定性，适用于高温作业。
• ADDITIVE COMPOSITION SUITABLE FOR VISCOSITY REDUCTION OF OIL-BASED DRILLING FLUID, OIL-BASED DRILLING FLUID AND USE THEREOF
  申请人：China University of Petroleum (Beijing)

  公开号：EP3287504A1

  公开（公告）日：2018-02-28

  The present invention relates to the well drilling field in petroleum industry, in particular to an additive composition suitable for viscosity reduction of oil-based drilling fluids, an oil-based drilling fluid and use thereof. The double-block copolymer mainly consists of a block A and a block B, wherein, the block A is composed of structural units represented by formula (1), the block B is composed of structural units represented by formula (2), and the number-average molecular weight of the block A is 1,500-10,000. The double-block copolymer provided in the present invention can be used as a viscosity reducer in oil-based drilling fluids, especially can be used as a viscosity reducer in high-density clay-free oil-based drilling fluids, and can greatly decrease the apparent viscosity and plastic viscosity of oil-based drilling fluids in high-temperature and high-pressure reservoir while maintaining appropriate shearing force, so as to increase the drilling rate and reduce drilling difficulties.

  本发明涉及石油工业中的钻井领域，尤其涉及一种适用于降低油基钻井液粘度的添加剂组合物、一种油基钻井液及其用途。双嵌段共聚物主要由嵌段 A 和嵌段 B 组成，其中，嵌段 A 由式（1）表示的结构单元组成，嵌段 B 由式（2）表示的结构单元组成，嵌段 A 的数均分子量为 1,500-10,000 。本发明提供的双嵌段共聚物可作为油基钻井液的降粘剂，尤其可作为高密度无粘土油基钻井液的降粘剂，在保持适当剪切力的同时，可大大降低高温高压储层中油基钻井液的表观粘度和塑性粘度，从而提高钻进速度，降低钻进难度。
• Drilling fluid additive composition, and oil-based drilling fluid and use thereof
  申请人：CHINA UNIVERSITY OF PETROLEUM (BEIJING)

  公开号：US10000684B2

  公开（公告）日：2018-06-19

  The present invention relates to the well drilling field in petroleum industry, in particular to a drilling fluid additive composition that contains a lubricant, an emulsifier, and a rheological modifier, wherein, the lubricant contains: graphite oxide and a biquaternary ammonium salt compound in which the cation part is represented by formula (1); the emulsifier is one or more of compounds represented by formula (I); the rheological modifier is a dimer acid-organic amine copolymer comprising structural units from dimer acid, structural units from alkylamine and structural units from arylamine. The present invention further provides an oil-based drilling fluid containing the composition and a use thereof. The oil-based drilling fluid containing the composition provided in the present invention obtains a lower lubrication coefficient, and favorable rheological property and thermostability, and is suitable for use in operation at a high temperature

  本发明涉及石油工业中的钻井领域，尤其涉及一种包含润滑剂、乳化剂和流变修饰剂的钻井液添加剂组合物，其中，润滑剂包含：氧化石墨和一种双季铵盐化合物，其中阳离子部分由式（1）表示；乳化剂是一种或多种由式（I）表示的化合物；流变修饰剂是一种二聚酸-有机胺共聚物，包括来自二聚酸的结构单元、来自烷基胺的结构单元和来自芳基胺的结构单元。本发明进一步提供了一种含有该组合物的油基钻井液及其用途。含有本发明提供的组合物的油基钻井液可获得较低的润滑系数、良好的流变性能和热稳定性，适合在高温条件下使用。
• Picolinate cross-bridged cyclams, chelates with metallic cations and use thereof
  申请人：UNIVERSITÉ DE BRETAGNE OCCIDENTALE

  公开号：US10434199B2

  公开（公告）日：2019-10-08

  Chelates resulting from the complexation of picolinate cross-bridged cyclams of formula (I), wherein n and the substituents L1-L4 and R1-R5 are as defined, with metallic cations. Picolinate cross-bridged cyclam ligands of formula (I), the use of chelates in nuclear medicine and the use of ligands in cations detection or epuration of effluents are also described.

  式（I）的吡啶甲酸交桥环胺（其中 n 和取代基 L1-L4 和 R1-R5 如所定义）与金属阳离子络合产生的螯合物。此外，还介绍了式 (I) 的吡啶甲酸交桥环胺配体、螯合物在核医学中的应用以及配体在阳离子检测或废水表观化中的应用。