THERMOSETTING RESIN COMPOSITION, ELECTRICAL INSULATING COIL, AND ROTATING ELECTRIC MACHINE AND PRODUCTION THEREOF

Japanese Patent JP3201262

B2

PROBLEM TO BE SOLVED: To obtain a high-shear-strength high-voltage electrical insulating coil, esp. an integrally impregnated rotating machine, by using a thermosetting resin compsn. comprising a polyepoxy resin having specific groups, a diepoxy resin having specific groups, an acid anhydride, and a metal acetonate.
SOLUTION: This resin compsn. comprises a diepoxy resin having two p-(2,3- epoxypropoxy)phenyl groups, a polyepoxy resin having at least three above-mentioned groups and a group represented by formula I, an acid anhydride curative, and a metal acetonate cure catalyst represented by formula II (wherein X and Y are each methyl or phenyl; Me is Mn, Co, Zn, or Zr; and n is the coordination number) in an amt. of 1-5 pts.wt. based on 100 pts.wt. epoxy resin. The compsn. has a ratio of (the number of moles of the diepoxy resin × the number of epoxy groups in 1mol of the diepoxy resin)/(the number of moles of the polyepoxy resin × the number of epoxy groups in 1 mole of the polyepoxy resin) of 1-4, a viscosity at 25°C of 5P or higher, and a viscosity at 60°C of 5P or lower. Impregnation with thus obtd. one-component thermosetting resin gives a highly heat-resistant electrical insulating coil an thus enables a rotating machine to be produced at a low cost by integral imprenation.

Toru Koyama
Katsuo Sugawara
Masakazu Maruyama
Ikushi Kano

JP13615796A

August 20, 2001

May 30, 1996

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株式会社日立製作所

C08G59/20; C08G59/38; C08G59/42; C08G59/68; C08G59/70; C08L63/00; H01B3/40; H02K3/30; H02K3/40; H02K15/12; (IPC1-7): C08G59/20; C08G59/42; C08G59/68; H01B3/40

JP644615A
JP6026441A
JP53145863A
JP53115800A
JP52130899A
JP455426A
JP614722A
JP60108418A
JP4851997A
JP6233486A
JP377203A
JP2219812A
JP1132654A
JP1132653A
JP83337A
JP9102409A

Yasuo Sakuta

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