Durable cast epoxy tooling composition

Details Durable cast epoxy tooling composition Durable cast epoxy tooling composition

1982-11-12

1983-12-27

Page, Thurman K.

Coating processes

With post-treatment of coating or coating material

Heating or drying

4273882, 528 94, B05D 302

Patent

active

044230940

ABSTRACT:
A method and composition have been developed for providing wear resistant surfaces on tools used to stamp sheet metal. The composition is based on liquid epoxy novolac resin having a functionality greater than two filled with an inorganic powder having very high hardness. The epoxy constituent is cross linked and cured in two stages: it is first cured at room temperature with an aliphatic amine curing agent until it is hardened and is then toughened by an elevated temperature cure initiated by an imidazole curing agent. The composition may be used to cast an entire tool or as a surface coating layer for a less durable base.

REFERENCES:
patent: 3575926 (1971-04-01), Joyce et al.
patent: 4180166 (1979-12-01), Batdorf
patent: 4186036 (1980-01-01), Elms et al.
patent: 4216304 (1980-08-01), Gutekunst et al.
patent: 4237149 (1980-12-01), Denk et al.
patent: 4269879 (1981-05-01), Davis

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