Curable epoxy resins

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C - Chemistry, Metallurgy

08

L

400/5034, 400/50

C08L 63/00 (2006.01) C08G 59/04 (2006.01) C08G 59/62 (2006.01) C08J 3/24 (2006.01)

Patent

CA 2019606

O.Z. 0050/40899 Abstract of the Disclosure: A curable epoxy resin is obtainable by reaction of A) a prccondensate of A1) 1 mol of a urea derivative of the general formula I Image I (X = oxygen, sulfur; R1, R2 - alkyl, cycloalkyl, alkylcarbonyl, aryl or together 1,2-ethylene, 1,3-propylene, 1,4-butylene, 2,2-dimethyl-1,3- propylene, 1,2-cyclohexylene, 1,2-phenylene, -CH1-NR4-CH2-, R3 = hydrogen, alkyl_ and A2) 1.05-2 mol of a hydroxy compound (II) with B) 20-100 mol-% of the hydroxyl groups in the precondensate A from an epihalohydrin of the general formula III Image III (Hal = chlorine, bromine; R5 = hydrogen, alkyl) and C) a base in organic solution.

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