我们在这里报告了一种用于环状脂肪醇模块化扩环的催化方法。在这项工作中,烯丙醇底物的质子耦合电子转移活化提供烷氧基自由基中间体,该中间体经历随后的 CC 键断裂以提供烯酮和系链烷基自由基。该烷基与暴露的烯烃受体的重组又产生扩环的酮产物。这种 CC 键形成事件的区域选择性可以通过烯烃底物上的取代基可靠地控制,提供了一种以选择性方式将简单的 N 元环底物转化为 n+1 或 n+2 环加合物的方法。
Induction of lignin solubility for a series of polar ionic liquids by the addition of a small amount of water
作者:Takashi Akiba、Akiko Tsurumaki、Hiroyuki Ohno
DOI:10.1039/c7gc00626h
日期:——
Addition of small amount of water was found to induce lignin solubilizing ability of several polarionic liquids which show no lignin solubility in the absence of water. Similarly, addition...
Resin compositions which contain a compound having at least two epoxy and/or thiirane groups in the molecule (ingredient (1)) and a specific ionic liquid (ingredient (2)), as combined, are practicable resin compositions which comprise constitutive elements of readily available materials and have well-balanced suitable curing capability and storage stability. Preferably, the ionic liquid (ingredient (2)) comprises a combination of an ammonium cation or phosphonium cation and a carboxylate anion.
The present invention aims to provide a resin composition superior in all of resistance to moisture permeability, adhesive strength and transparency. This object is achieved by a resin composition containing 3-38 parts by mass of (B) calcined hydrotalcite, 1-16 parts by mass of (C) talc, and 1-16 parts by mass of (D) silica based on 80 parts by mass of (A) an epoxy resin.
HYDROTALCITE-CONTAINING SEALING RESIN COMPOSITION AND SEALING SHEET
申请人:AJINOMOTO CO., INC.
公开号:US20160251493A1
公开(公告)日:2016-09-01
The present invention aims to provide a resin composition superior in all of resistance to moisture permeability, adhesive strength and transparency. This object is achieved by a resin composition containing (A) an epoxy resin and (B) hydrotalcite having a BET specific surface area of not less than 65 m
2
/g.
A resin composition contains a compound having at least two epoxy and/or thiirane groups in the molecule (ingredient (1)) and a specific ionic liquid (ingredient (2)). The ionic liquid (ingredient (2)) comprises a combination of an ammonium cation or phosphonium cation and a carboxylate anion. The resulting resin composition has a desirable balance of properties being both storage stable and conveniently curable.