Synthesis and Characterization of Tetra-Functional Epoxy Resins from Rosin

Tetra functional epoxy resins were prepared by the reaction of diethanolamine with Diels-Alder adducts of rosin ketone. These adducts were reacted with epichlorohydrine in the presence of NaOH as a catalyst to produce epoxy resins. The resins obtained were characterized by IR and ^sup 1^HNMR spectro...

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Bibliographic Details
Published inJournal of polymer research Vol. 12; no. 2; pp. 127 - 138
Main Authors Atta, Ayman M, Mansour, R, Abdou, Mahmoud I, El-Sayed, Ashraf M
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Nature B.V 01.04.2005
Subjects
Adducts
Curing
Diethanolamines
Epoxy resins
Polymers
Resins
Rosin
Viscosity measurement
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Summary:Tetra functional epoxy resins were prepared by the reaction of diethanolamine with Diels-Alder adducts of rosin ketone. These adducts were reacted with epichlorohydrine in the presence of NaOH as a catalyst to produce epoxy resins. The resins obtained were characterized by IR and ^sup 1^HNMR spectroscopy. The curing behaviours of these resins with their poly (amide-imide) derivatives were investigated by viscosity measurements. The curing activation energy was calculated from the gel time and critical viscosity measurements. The curing exotherms of the epoxy resins produced with poly (amide-imide) hardeners were investigated. The curing and gel times of the resins produced show slight differences between the synthesized resins. The chemical resistances and mechanical properties of the cured films were evaluated. The produced coats show high stability for salt spray at a duration time of 563 h.[PUBLICATION ABSTRACT]
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ISSN:1022-9760
1572-8935
DOI:10.1007/s10965-004-2936-x