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US 5,204,025 AGranted
Conductive paste composition
AssigneeMitsubishi Petrochemical Co., Ltd.
InventorsKimiko Yamada, Katuyosi Yada, Hiromu Inoue, Yousui Nemoto
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Abstract
A conductive paste composition is described, which comprises an epoxy resin having a diglycidylamino group, a resol type phenol curing agent, and copper powder. The paste composition exhibits excellent moisture resistance and adhesion and provides a cured film of high conductivity level.
Claims3
A conductive paste composition comprising an epoxy resin having a diglycidylamino group represented by the formula:
- ##STR2## a resol phenol curing agent, and copper powder, with said epoxy resin being present in a proportion of at least 80% by weight based on the total epoxy resins, said resol phenol curing agent being a resol phenol containing an amino group which is obtained by condensation of phenol and formaldehyde in the presence of ammonia, hexamethylenetetramine or a tertiary amine and being present at an equivalent ratio of from 0.5 to 1.5 to the total epoxy resins and said copper powder being present in an amount of from 100 to 800% by weight of the total amount of the total epoxy resins and the resol phenol curing agent.
Dependencies are inferred from the claim text.