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.
所述环氧树脂包含如本文所定义的式 1 的二缩水甘油醚。二缩水甘油醚含有 3-5 个碳原子的环脂族环。环氧树脂的制造方法包括以下步骤(a) 形成反应混合物,该混合物包含本文定义的式 3 的二元醇、表卤代烃、相转移催化剂和可选的有机溶剂;(b) 将碱性作用物质和水与步骤(a)的反应混合物接触;(c) 用水性溶剂洗涤步骤(b)的混合物,以基本上除去盐;以及 (d) 分离环氧树脂。还公开了包含环氧树脂的可固化和固化组合物。与从环己烷二甲醇中提取的环氧树脂相比,环氧树脂的玻璃化温度更高,粘度更低。