Recent advances in in‐situ epoxidation reactions with resin catalysts

Abstract

Summary Two new resin catalyst systems forin‐situ epoxidation have been described. One technique features the continuous circulation of the reaction mixture through a fixed resin catalyst bed. The other, a simple, practical and economical process, employs expendable amounts of resin catalyst. Yields of 75–85% epoxy ester with very little residual unsaturation were readily obtained.

Epoxidized Ester of Glycols and Pentaerythritol. Application as Plasticizers for Poly(vinyl Chloride)

“…All epoxy plasticizers studied were prepared by a resin-catalyzed, in situ epoxidation technique, essentially that reported by Gall (5). Certain chemical properties of the prepared plasticizers are shown in Table I.…”

Preparation of Environment-Friendly Epoxidized Corn Oil as a Plasticizer

“…They are synthesized by carboxylic acid using different catalysts, such as inorganic acid, acidic ion exchange resin (AIER), enzymes and metal catalyst. Among these catalysts, AIER, as a heterogeneous catalyst, possesses prominent advantages, such as easy separation, recycle, high selectivity and less side reaction [3], and has been attracting much attentions [4][5][6]. In this work, we prepared the epoxidized corn oil catalyzed by modified AIER.…”

Homopolymers and copolymers of acrylates and methacrylates of homoterpenylmethyl carbinol and α‐campholenol

“…In continuation of the studies on the preparation of polymeis containing terpenes and various terpene two new derivatives from a-pinine have been investigated : (1) homoterpenylmethyl carbinol, 6-hydroxy-2-( 1-hydroxy-1-methylethy1)heptanoic acid y-lsctone (I), and (6) a-campholenol, 2-(2,2,3-trimet hyl-3-cyclopen ten yl) e t hyl alcohol (11). I wm I I t prepared by Howell and Hedrick by the platinum oxide reduction of homoterpenylmethyl ketone in sodium hydroxide solution;7 I1 was obtained by reduction of the corresponding aldehyde, a-campholene aldehyde.8 The properties and reactions of I1 and a-campholene aldehyde have been described.8 Synthesis of various esters of 11, conversion of the esters to epoxides, and evaluation of the epoxides as plasticizer-stabilizers for poly-(vinyl chloride) have also been d e~r i b e d .~…”