Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1989-01-23
1990-05-15
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
528 94, 528 99, 528103, C08G 5938, C08G 5942, C08G 5968
Patent
active
049258869
ABSTRACT:
A tough, durable, high temperature epoxy tooling composition for making cast-to-size forming tools. The composition comprises a bisphenol-A epoxy, a trifunctional aromatic epoxy, an anhydride catalyst, and an imidazole catalyst. The composition may optionally contain a filler system comprising filler particles having different diameters that are interstitially-matched.
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Data Sheet by Shell Chemical Company, entitled "Epon.RTM. Resins for Casting", p. 69, published Jan., 1967.
Atkins Richard P.
Dearlove Thomas J.
Wang Chen-Shih
General Motors Corporation
Kight III John
Krass Frederick
Tung Randy W.
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