Epoxy resin composition

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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525523, 525534, 523400, 549541, C08F28300

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active

058345701

ABSTRACT:
An epoxy resin composition of this invention is obtained by solidifying epoxy resins represented by the following general formula (1) (wherein G is glycidyl group and R.sup.1 to R.sup.8 are hydrogen atoms, halogen atoms or hydrocarbon groups with 1 to 6 carbon atoms, and n is an integer of 0 to 10) by crystallization and adding epoxy resin curing agents to the resulting solid. It shows good flow and low moisture absorption, cures with excellent heat resistance at soldering temperature and is useful for a variety of applications, in particular, for encapsulating semiconductor devices. ##STR1##

REFERENCES:
patent: 3095429 (1963-06-01), Smith et al.
patent: 3413320 (1968-11-01), Cofer
patent: 3720645 (1973-03-01), Nistri et al.
patent: 4421897 (1983-12-01), Gutekunst et al.
patent: 4935101 (1990-06-01), Shum et al.
patent: 5043184 (1991-08-01), Fuji et al.
patent: 5098965 (1992-03-01), Bauer et al
patent: 5294683 (1994-03-01), Cotting et al.
patent: 5395915 (1995-03-01), Iimuro et al.
Lee et al, "Handbook of Epoxy Resins", McGraw Hill Pub., pp. 5-16 to 5-18 and 14-1 to 14-4, 1982.

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