Process for the production of epoxy resin castings

Details Process for the production of epoxy resin castings Process for the production of epoxy resin castings

C - Chemistry, Metallurgy

08

G

402/192, 402/252

C08G 59/72 (2006.01) C08G 59/42 (2006.01) C08L 63/00 (2006.01) H01L 21/56 (2006.01)

Patent

CA 1146692

Abstract The invention relates to a process in which, as essential components, liquid epoxy resins, carboxylic anhydrides. zinc fluoroborate complex compounds. water. tetrahydropyrane and compounds (X) which contain OH groups, COOH groups or both groups together, are reacted. Selective choice of the special quantity ratios results in reaction mixtures which, at low temperature (e.g. at 100°C), require only short moulding times and have a sufficiently long pot life. As the reaction is only slightly exothermic, the process can be used very advantageously for encapsulating electronic components.

363834

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