Über die Synthese neuer Epoxyverbindungen

Abstract

Firstly, the different types of epoxy compounds are considered :

1. Glycidyl ethers, esters, and amines.
2. Epoxydation products:
   a) linear aliphatic epoxides, epoxidised fatty acids and fatty acid derivatives and epoxidised polybutadienes;
   b) cycloaliphatic epoxides.

Subsequently the epoxides of group 2b are particularly discussed, and reference is made to the customary technically processes for the synthesis of the starting materials for this class.
These cyclo-olefinic starting materials may be converted to the corresponding epoxides by various methods. The most important are the use of peracids, or of hypochlorous acid. Both processes offer technical possibilities. Organic peracids for the epoxidation of cyclo-olefinic substances can suitably be prepared in the following ways:

1. Carboxylic acid and hydrogen peroxide.
2. Carboxylic acid anhydride and hydrogen peroxide or inorganic peroxides.
3. Oxidation of aldehydes with oxygen.

By these methods, a great number of epoxy compounds with a cycloaliphatic structure may be synthesized. When cured, these compounds furnish products with various properties, depending upon their constitution. The properties of the cured substances and the technical application possibilities for two cyclo-aliphatic epoxides are discussed and a comparison is made with conventional epoxy resins, based on numerical data.