Flame retardant epoxy resin compositions

Details Flame retardant epoxy resin compositions Flame retardant epoxy resin compositions

1998-04-06

2000-11-07

Dawson, Robert

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

525420, 525423, 525449, 525481, H01L 2912

Patent

active

06143423&

ABSTRACT:
An epoxy resin composition contains (A) an epoxy resin having an epoxy equivalent of at least 185 and possessing a skeleton having a structure in which two benzene rings are conjugable to each other directly or via an aliphatic unsaturated double bond, carbon atoms having an atomic orbital of SP.sup.2 type accounting for at least 50% of the carbon number, (B) a phenolic resin having a hydroxyl equivalent of at least 160, carbon atoms having an atomic orbital of Sp.sup.2 type accounting for at least 85% of the carbon number, (C) a polyimide resin in an amount of 1-20 parts by weight per 100 parts by weight of components (A) and (B) combined, and (D) 70-85% by volume of the entire composition of an inorganic filler. The composition cures into products having flame retardancy and high-temperature reliability even though it is free of bromine compounds and antimony compounds.

REFERENCES:
patent: 5284938 (1994-02-01), Dangayach et al.
patent: 5358980 (1994-10-01), Shiobara et al.
patent: 5780571 (1998-07-01), Ohno et al.
patent: 5827908 (1998-10-01), Arai et al.

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