Appeal No. 2002-0755 Page 2
Application No. 08/999,803
14. A process for preparing resin impregnated wire
windings comprising
a) heating said wire windings in an oven to a
temperature of about 110 to about 200EC;
b) subsequently trickling a one-componet impregnating
resin, which is storage-stable at room temperature, onto the
heated, rotating wire winding or dripping the heated,
rotating wire winding in a bath filled with said one-
component impregnating resin,
wherein the impregnating resin consists
essentially of:
(A) an epoxy resin that is liquid at room
temperature; and
(B) a heat-activatable initiator for the
polymerisation of the epoxy resin, the initiator comprising
(a) at least one quaternary ammonium salt of an
aromatic-heterocyclic compound which contains 1 or 2
nitrogen atoms, and of a complex halide anion seleced from
the group consisting of BF 2, PF 2, SbF2 [sic - SbF 2],4 6 6 6
SbF (OH)2 and AsF 2, and5 6
(b) at least one thermal radical former (b1), (b2),
(b3) or (b4), wherein
(b1) is a diarylethane derivative of formula III
wherein Ar is phenyl, naphthyl, or C -C alkyl- or1 4
chloro-substituted phenyl,
R is hydroxy, C -C alkoxy, )OOC-R or -OSiR R R ,6 1 4 8 9 10 11
wherein R is C -C alkyl or phenyl, and R , R and R are8 1 8 9 10 11
each independently of one another C -C alkyl or phenyl, and1 4
R is C -C alkyl or cyclohexyl or has the same meaning7 1 4
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