| 摘要 |
Curable mixtures, containing, (a) at least one bisphenol diglycidyl ether based on bisphenol A, hydrogenated bisphenol A or bisphenol F, (b) as a curing catalyst, a colorless or slightly yellow solution of a metal complex compound of the formula I ]Me(H2O)x(Lm)y]2+(A(-))2 (I), in which Me is a divalent metal from the group comprising Zn, Cd, Sn, Pb, Ca or Mg, Lm is a saturated cyclic ether having 5 to 7 ring atoms, a linear or cyclic saturated aliphatic ether compound or a mixture of the ether and the ether compound, the ether and the ether compound having a boiling point of at least 60 DEG C., and A is an anion of the formula BF4(-), PF6(-), AsF6(-) or SbF6 (-), x is the number 4, 5 or 6 and y is zero or the number 1 or 2, the sum of x and y always being 6, the complex being dissolved in an excess of the corresponding ether or the corresponding ether compound, (c) a sterically hindered mononuclear or polynuclear phenol, a phosphite of the formula II or III <IMAGE> (II) or <IMAGE> (III) in which R1, R2 and R3 independently of one another are each phenyl, alkyl-substituted phenyl having 1-12 carbon atoms in the alkyl radical or alkyl having 1 to 20 carbon atoms, or a mixture of a sterically hindered mononuclear or polynuclear phenol and a phosphite of the formula II or III and, if appropriate, (d) as a reactive diluent, up to 25 parts by weight, relative to 100 parts by weight (a), of at least one diglycidyl ether of 1,4-butanediol, 1,6-hexanediol or neopentyl glycol or a cresol glycidyl ether and, if appropriate, (e) as an adhesion promoter, an organic silane, titanate or zirconate, can be cured rapidly and give transparent mouldings which are resistant to yellowing. They are particularly suitable for sheathing or embedding opto-electronic components.
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