By B. Ellis (auth.), Mr Bryan Ellis (eds.)
Epoxy resins were commercially on hand for roughly forty five years and also have many significant business functions, in particular the place technical benefits warrant their a bit better expenditures. The chemistry of those resins is attention-grabbing and has attracted examine via many very capable scientists. The technological functions of the epoxy resins are very hard and there are lots of new advancements every year. The goals of the current booklet are to offer in a compact shape either theoretical and useful details that might help in the learn, examine and concepts within the box of epoxy resin technological know-how and know-how. The literature on epoxy resins is so large that it isn't attainable to be encyclopaedic and that's no longer the functionality of the current textual content. it's the editor's wish that the choice of issues mentioned will offer an up to date survey. there's a few overlap within the chapters yet this can be minimum and so every one bankruptcy is largely self contained. as with any chemical compounds there are toxicological and different risks. those aren't handled during this textual content on the grounds that a bit wisdom may be harmful, yet fabric provided promises information about any protection precautions which may be helpful. notwithstanding, usually those precautions should not hard and epoxy resins, or extra particularly the hardeners, will be dealt with effortlessly. it's was hoping that this article will supply an updated define of the technology and know-how of epoxy resins and stimulate extra study into unsolved difficulties and support additional technological developments.
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Additional info for Chemistry and Technology of Epoxy Resins
In contrast the higher molecular weight high viscosity polyamides, adducts and aromatic modified poly ami des are used mainly with solid epoxy resin in solvent-based corrosion-resistant coatings. However, the high viscosity of polyamides and ad ducts means that they cannot easily be used in reduced volatile organic content or high solids coatings. This led Brytus (1986) to the development of new types of low viscosity solvent-free polyamide ad ducts which give properties in cured coatings comparable to those obtained with conventional polyamides and adducts.
1050-1056. (1988b) p. 1067. (1988c) p. 1069. (1988d) pp. 1070-1072. R. M. (1979) Adv. in Heterocyclic Chemistry 25, 303-391, see 327-329. Katritsky, AR. M. (1966) Adv. in Heterocyclic Chemistry 7, 225-299, see 232-233. 36 CHEMISTRY AND TECHNOLOGY OF EPOXY RESINS Kilner, E. M. (1960) Applied Organic Chemistry, Macdonald and Evans, p. 54. W. (1988) Enc. Polym. Sci. Eng. Vol. 11. Wiley-Interscience, New York, pp. 45-95. Lee, H. and Neville, K. (1967 a) Handbook of Epoxy Resins, McGraw-Hili, New York, sections 1-2 to 1-4.
Reaction of the higher homologues of the ethyleneamines series with dimerised or polymerised unsaturated fatty acids as recorded by Cowan et al. (1948) leads to the popular general curing agent type the polyamide. ¢C I R C0 2 H R' ¢C R + (2) H2N (CH, CH 2NH),H -(2) H20. C0 2 H I R' CONH(CH 2 CH 2NH),H CONH(CH 2CH 2NH)xH A range of polyamides are available commercially, based upon diverse fatty acid/dimer acid/amine ratios which have been processed under various conditions. They vary in molecular weight, physical form, amine content and reactivity but all are low in volatility.