Machinable, high strength epoxy tooling compositions

Details Machinable, high strength epoxy tooling compositions Machinable, high strength epoxy tooling compositions

1993-03-05

1994-01-18

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

428413, 428417, 523444, 523458, C08K 334, C08K 340, C08L 6302

Patent

active

052800539

ABSTRACT:
A machinable, high strength epoxy tool which is the polymeric reaction product of a mixture containing 5 to 12 weight percent of a bisphenol A epoxy, 3 to 8 weight percent of at least one polyoxypropylene amine catalyst, 60 to 85 weight percent of a mixture of no less than three different sized particulate fillers, the major portion of which is iron powder, 5 to 15 weight percent of short (<250 .mu.m) glass fibers, and 0.02 to 1 weight percent of a surface active agent.

REFERENCES:
patent: 4716185 (1987-12-01), Rabener et al.
patent: 4891394 (1990-01-01), Savin
patent: 4920161 (1990-04-01), Wang et al.
patent: 4942190 (1990-07-01), Murayama et al.
patent: 5098780 (1992-03-01), Nemunaitis et al.

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