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Title: Preparation and cured properties of novel cycloaliphatic epoxy resins

Preparation and characterization of novel cycloaliphatic epoxy resins, which are derived from octadienyl compounds, were studied. From a model peracetic acid epoxidation reaction using 2,7-octadienyl acetate-1, the structure of the liquid resins is estimated to be mainly terminal epoxides and some amount of inner epoxide depending on the epoxide content. The epoxy resins offer lower toxicity and lower vapor pressure. The reactivity of the resin with acid anhydrides is moderate but faster than that of traditional cyclohexane epoxide-type resins and slower than that of the glycidyl ester-type resins. This reactivity was also examined using model compounds. The heat deflection temperature of the hexahydro-phthalic anhydride-cured resins is shown to be directly proportional to the number of epoxy groups in the molecules. The flexural strength of the cured resins is nearly equivalent to that of the commercial resins, although the flexural elongation of the resins is larger than that of the rigid cyclohexane epoxide-type resins. The thermal stability of the cured resins is compared to typical rigid cycloaliphatic resins; furthermore, high water resistance of the cured resins is suggested to be attributed to the hydrophobic character of the C[sub 8] chain by cross-linking.
Authors:
; ; ;  [1]
  1. (Mitsubishi Kasei Corp., Yokohama (Japan). Research Center)
Publication Date:
OSTI Identifier:
5850703
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Polymer Science; (United States); Journal Volume: 50:4
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; RESINS; FABRICATION; MECHANICAL PROPERTIES; MICROSTRUCTURE; EPOXIDES; ORGANIC COMPOUNDS; ORGANIC OXYGEN COMPOUNDS; ORGANIC POLYMERS; PETROCHEMICALS; PETROLEUM PRODUCTS; POLYMERS 360601* -- Other Materials-- Preparation & Manufacture; 360602 -- Other Materials-- Structure & Phase Studies; 360603 -- Materials-- Properties