(1-Hydroxy-2,2,6,6-tetramethylpiperidin-4-yl) octanoate | 22491-88-9

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: (1-Hydroxy-2,2,6,6-tetramethylpiperidin-4-yl) octanoate
• CAS: 22491-88-9
• 化学式: C₁₇H₃₃NO₃
• 分子量: 299.4
• InChiKey: VZSCEEGBKGDYGI-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.4
• 重原子数：
  21
• 可旋转键数：
  8
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.94
• 拓扑面积：
  49.8
• 氢给体数：
  1
• 氢受体数：
  4

文献信息

• [EN] AMINO-QUINONE ANTIPOLYMERANTS AND METHODS OF USING<br/>[FR] AGENT D'ANTIPOLYMÉRISATION À BASE D'AMINO-QUINONE ET PROCÉDÉS D'UTILISATION
  申请人：ECOLAB USA INC

  公开号：WO2020068735A1

  公开（公告）日：2020-04-02

  Described are methods and composition for inhibiting polymerization of a monomer (e.g., styrene) composition using an aminated quinone antipolymerant, such as an aminated benzoquinone or aminated naphthoquinone antipolymerant having one or more secondary or tertiary amine group(s). The aminated quinone antipolymerant can be used with little or no nitroxyl group containing antipolymerant yet still provide excellent antipolymerant activity in a monomer-containing composition.

  描述了一种使用氨基喹诺烷抗聚合剂（例如，氨基苯醌或氨基萘醌抗聚合剂）来抑制单体（例如苯乙烯）组合物的聚合的方法和组合物，该氨基喹诺烷抗聚合剂具有一个或多个次级或三级胺基团。氨基喹诺烷抗聚合剂可以与几乎不含氮氧自由基的抗聚合剂一起使用，但仍然在含单体组合物中提供出色的抗聚合活性。
• [EN] QUINONE METHIDE AND AMMONIUM SALT ANTIPOLYMERANT COMPOSITION AND METHOD<br/>[FR] COMPOSITION D'ANTI-POLYMÈRE DE MÉTHIDE DE QUINONE ET DE SEL D'AMMONIUM, ET PROCÉDÉ
  申请人：ECOLAB USA INC

  公开号：WO2021072181A1

  公开（公告）日：2021-04-15

  Described are compositions and methods for inhibiting polymerization of a monomer (e.g., styrene) composition a quinone methide polymerization retarder and an ammonium salt. In a mixture, the ammonium salt improves the efficacy of the quinone methide polymerization retarder and provides greater antipolymerant activity. In turn, the mixture reduces or prevents apparatus fouling and improves the purity of monomer streams.

  本文描述了一种抑制单体（例如苯乙烯）聚合的组合物和方法，该组合物包括醌甲醛聚合抑制剂和铵盐。在混合物中，铵盐提高了醌甲醛聚合抑制剂的功效，并提供了更强的抗聚合活性。反过来，该混合物减少或预防设备污染，并提高单体流的纯度。
• PRODUCTION OF TERT-BUTYL ESTERS OF ETHYLENICALLY UNSATURATED CARBOXYLIC ACIDS
  申请人：BASF SE

  公开号：US20190002389A1

  公开（公告）日：2019-01-03

  A process for continuously preparing the tert-butyl ester of an ethylenically unsaturated carboxylic acid, by a) reacting an ethylenically unsaturated carboxylic acid with isobutene in the presence of an acidic catalyst to give an esterification mixture; b) removing the acidic catalyst; c) removing low-boiling components; and d) supplying a tert-butyl ester-comprising liquid to a distillation apparatus and subjecting it to purifying distillation in the distillation apparatus, where d 1 ) in the distillation apparatus the tert-butyl ester-comprising liquid is separated into a tert-butyl ester-comprising gaseous top product and a carboxylic acid-comprising liquid bottom product; d 2 ) the tert-butyl ester-comprising gaseous top product is at least partly condensed and the condensate is recycled partly as reflux to the distillation apparatus; d 3 ) the carboxylic acid-comprising liquid bottom product is recycled at least partly to step a); d 4 ) carboxylic acid-comprising liquid bottom product is drawn off and passed to a heater; a superheated, liquid recycle stream is taken from the heater; and the superheated recycle stream is let down into the distillatiuon apparatus; and d 5 ) at least in the top region of the distillation apparatus, the distillation apparatus walls in contact with the vapor, at least in sub-regions, are heated and/or thermally insulated. In the course of the process, the separation of the tert-butyl ester from unreacted carboxylic acid is carried on with a particularly low level of accompanying polymerization both of the tert-butyl ester and of the carboxylic acid.

  一种连续制备乙烯基不饱和羧酸叔丁酯的方法，包括以下步骤：a）在酸性催化剂存在下，将乙烯基不饱和羧酸与异丁烯反应，得到酯化混合物；b）去除酸性催化剂；c）去除低沸点成分；d）将含有叔丁酯的液体供给蒸馏设备，在蒸馏设备中进行纯化蒸馏，其中d1）在蒸馏设备中，将含有叔丁酯的液体分离成含有叔丁酯的气态顶部产品和含有羧酸的液态底部产品；d2）将含有叔丁酯的气态顶部产品至少部分冷凝，所得冷凝物部分作为回流物回收至蒸馏设备；d3）将含有羧酸的液态底部产品至少部分回收至步骤a）；d4）将含有羧酸的液态底部产品抽出并通过加热器，从加热器中取出过热的液态回收流，将过热的回收流放入蒸馏设备中；d5）至少在蒸馏设备的顶部区域，与蒸汽接触的蒸馏设备壁面至少在子区域中加热和/或热绝缘。在该过程中，从未反应的羧酸中分离出叔丁酯，伴随的叔丁酯和羧酸的聚合水平特别低。
• Process for the preparation of N-oxyl hindered amine esters using tetraalkyl orthotitanate tranesterification catalysts
  申请人：CIBA-GEIGY AG

  公开号：EP0703220A1

  公开（公告）日：1996-03-27

  When a tetraalkyl orthotitanate transesterification catalyst is used in the preparation of N-oxyl hindered amine esters, the N-oxyl compound is obtained in excellent yield and purity when moderate temperatures (90-130°C) and an aliphatic hydrocarbon solvent are used. The N-oxyl compounds are light stabilizers and also inhibitors for preventing the premature polymerization of ethylenically unsaturated monomers.

  当使用原钛酸四烷基酯酯交换反应催化剂制备 N-氧代受阻胺酯时，如果温度适中（90-130°C）并使用脂族烃溶剂，则可获得产率和纯度都很高的 N-氧代化合物。N-oxyl 化合物是光稳定剂，也是防止乙烯不饱和单体过早聚合的抑制剂。
• Bleaching compositions
  申请人：The Procter and Gamble Company

  公开号：EP1865051A1

  公开（公告）日：2007-12-12

  The present invention relates to a composition suitable for treating soiled fabrics comprising a hypohalite bleach, a brightener and a latex. The present invention also relates to a process of bleaching a fabric with said liquid aqueous composition. The use of the composition to improve whiteness performance upon ageing of the composition, to improve the stability of the brightener and to improve the stability of available chlorine in said composition is also claimed.

  本发明涉及一种适用于处理脏污织物的组合物，该组合物由次卤酸漂白剂、增白剂和胶乳组成。本发明还涉及一种用所述液态水性组合物漂白织物的工艺。本发明还要求使用该组合物来提高组合物老化后的白度性能，提高增白剂的稳定性，以及提高所述组合物中可用氯的稳定性。