Coil impregnant of epoxy resin from polyhydric phenol mixture

Details Coil impregnant of epoxy resin from polyhydric phenol mixture Coil impregnant of epoxy resin from polyhydric phenol mixture

1995-01-31

1997-08-12

Sellers, Robert E.

Stock material or miscellaneous articles

Circular sheet or circular blank

Aperture containing

428413, 428703, 525533, 528104, B32B 302, B32B 2738

Patent

active

056563507

ABSTRACT:
A thermosetting resin composition comprising:
[A] a polyfunctional epoxy resin produced from a reaction between a mixture of at least two polyhydric phenols selected from (a) bis(4-hydroxyphenyl)methane, (b) bis(4-hydroxyphenyl)ethane, (c) bis(4-hydroxyphenyl)-propane, (d) tris(4-hydroxyphenyl)alkane and (e) tetra(4-hydroxyphenyl)alkane, and epichlorohydrin, and
[B] an acid anhydride curing agent; and a coil and a panel formed of said composition.

REFERENCES:
patent: 4113791 (1978-09-01), Smith et al.
patent: 4127695 (1978-11-01), Hirakawa et al.
patent: 4390664 (1983-06-01), Kanayama
patent: 4558116 (1985-12-01), Wernli et al.
The Condensed Chemical Dictionary, 8th Edition, Van Nostrand Reinhold Co., New York, N.Y., 1971, p. 601.

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