Cold-box binders containing an epoxy resin and ester of a...

Details Cold-box binders containing an epoxy resin and ester of a... Cold-box binders containing an epoxy resin and ester of a...

2006-07-25

2006-07-25

Sanders, Kriellion A. (Department: 1714)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C523S145000, C523S147000, C164S016000, C164S138000, C164S526000, C164S529000

Reexamination Certificate

active

07081487

ABSTRACT:
This invention relates to foundry binder systems, which cure in the presence of sulfur dioxide and an oxidizing agent, comprising (a) an epoxy resin; (b) an ester of a fatty acid; (c) an effective amount of a oxidizing agent, and (d) no ethylenically unsaturated monomer or polymer. The foundry binder systems are used for making foundry mixes. The foundry mixes are used to make foundry shapes (such as cores and molds) which are used to make metal castings, particularly ferrous castings.

REFERENCES:
patent: 4518723 (1985-05-01), Woodson
patent: 4526219 (1985-07-01), Dunnavant et al.
patent: 4806576 (1989-02-01), Woodson
patent: 6136888 (2000-10-01), Torbus et al.
patent: 6465542 (2002-10-01), Torbus et al.
patent: 19727540 (1998-03-01), None
U.S. Appl. No. 10/628.056.

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