Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1992-05-22
1994-06-28
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
523443, 523444, 523220, C08K 334
Patent
active
053247671
ABSTRACT:
A thermoplastic resin composition for casting high-voltage coils containing two kinds of fillers (A) and (B), and products as molded coils and panels obtained by casting and curing the composition.
The composition of the present invention contains 60%-85% by weight, based on the total weight of the composition, of a silica type filler which is an admixture (A) a spherical silica having an average particle diameter of 0.1-0.9 .mu.m and (B) a ground silica having an average particle diameter of 3-9 .mu., the ratio A/(A+B) being 1%-7% by weight.
Products as molded coils and panels prepared by using the composition have good resistance to cracking and resistance to moisture.
REFERENCES:
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patent: 4617330 (1986-10-01), Thai et al.
patent: 4701479 (1987-10-01), Shiobara et al.
patent: 5049596 (1991-09-01), Fujimoto et al.
patent: 5137940 (1992-08-01), Tomiyoshi et al.
patent: 5166228 (1992-11-01), Shiobara et al.
Amagi Shigeo
Kano Ikushi
Koyama Tohru
Mukoh Akio
Suzuki Hiroshi
Cain Edward
Hitachi , Ltd.
Michl Paul R.
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