<sup>1</sup>H and <sup>13</sup>C NMR Studies on New Ionic Plastic Crystals Constructed by Ellipsoidal Cations with [BEt<sub>3</sub>Me] Anion
作者:Yuka Kotani、Hisashi Honda
DOI:10.1246/bcsj.20180320
日期:2019.4.15
Two new ionic plastic crystals of [NEtMe2Pr][BEt3Me] and [NEt2MePr][BEt3Me] were found. In contrast, the highest-temperature solid-phase of [NEtMe2Bu][BEt3Me] and [NEt2MeBu][BEt3Me] were assigned t...
Verfahren zur Herstellung cyclischer Phosphorigsäureester
申请人:CIBA-GEIGY AG
公开号:EP0159294A2
公开(公告)日:1985-10-23
Ein Verfahren zur Herstellung von Pentaerythritestern von Phosphorigsäurederivaten durch Umsetzung von Pentaerythrit mit einem Phosphortrihalogenid und einem Phenol in Gegenwart eines quaternären Salzes oder eines Polyethers wird beschrieben.
Durch die Anwendung solcher Katalysatoren kann nicht nur die Ausbeute verbessert, aber, durch den Einsatz des Phenols zu Beginn der Umsetzung vom Pentaerythrit mit dem Phosphortrihalogenid auch das ganze Verfahren in einer Stufe durchgeführt werden.
Epoxy resin compositions, methods of making same, and articles thereof
申请人:Dow Global Technologies LLC
公开号:EP2746312A2
公开(公告)日:2014-06-25
Epoxy resins comprising a diglycidyl ether of Formula 1 as defined herein are described. The diglycidyl ether contains a cycloaliphatic ring of 3-5 carbon atoms. The epoxy resins are made by a method comprising the steps of: (a) forming a reaction mixture comprising a diol of Formula 3 as defined herein, an epihalohydrin, a phase transfer catalyst, and optionally an organic solvent; (b) contacting a basic acting substance and water with the reaction mixture of step (a); (c) washing the mixture of step (b) with an aqueous solvent to substantially remove salts; and (d) isolating the epoxy resin. Curable and cured compositions comprising the epoxy resins are also disclosed. The epoxy resins have increased glass transition temperatures and reduced viscosity compared to epoxy resins derived from cyclohexanedimethanol.
An epoxy resin adduct comprising the reaction product of an epoxy resin comprising a diglycidyl ether of Formula 1 as defined herein, and at least one reactive compound having two or more active hydrogen atoms per molecule, wherein the active hydrogen atoms are reactive with epoxide groups are described. The diglycidyl ether contains a cycloaliphatic ring of 3-5 carbon atoms. Curable compositions, methods of curing, cured compositions, and articles comprising the epoxy resin adducts are also disclosed. The epoxy resin adduct has improved cure behavior and provides cured compositions having increased glass transition temperature, good weatherability, and a low total chlorine content.