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Spectroscopical contributions to the regioselectivity of nucleophilic curing reactions in epoxy resins

: Schormann, A.; Brockmann, H.; Groß, A.; Kollek, H.

International journal of adhesion and adhesives 8 (1988), S.147-157
ISSN: 0143-7496
ISSN: 1879-0127
Fraunhofer IFAM ()
beta-aminoalcohol; epoxide; mass spectroscopy; model reaction

The point of nucleophilic attack in epoxy resins have been studied using monofunctional epoxides and amines. These model reaction systems allow analytical and preparative separations of reaction products formed. Thus these reaction products can be characterized and analysed by mass and NMR spectroscopical methods: The results from these investigations show that the terminal carbon atom of the cyclic three-membered ring is attacked selectively by nucleophilic agents such as amines forming corresponding Beta-aminoalcohols. Therefore, the formation of polymers containing primary Beta-aminoalcohol structures have to be excluded.