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US 8,071,664 B2Granted
Compositions containing certain metallocenes and their uses
AssigneeASK Chemicals GmbH
InventorsRonald C. Aufderheide, Michael T. Brown, Jorg Kroker, Xianping Wang
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Abstract
Compositions comprising (1) a refractory and/or a binder, and (2) bis-cyclopentadienyl iron cyclopentadienyl manganese tricarbonyl, derivatives thereof, and mixtures thereof.
Claims10
A process for preparing a foundry shape comprising the steps of:
- forming a shape in a pattern from an amount of a refractory composition, the refractory composition comprising:
- a major amount of a refractory;
- a binder;
- and
- at least one of:
- cyclopentadienyl manganese tricarbonyl, derivatives thereof, and mixtures thereof, present in an amount of from about 0.0005 parts to about 4 parts by weight, based on the weight of the resulting refractory composition;
- curing the formed shape;
- and
- removing the cured shape from the pattern as a foundry shape.
6 more elements
A process for preparing a foundry shape comprising the steps of:
- forming a shape in a pattern from an amount of a refractory composition, the refractory composition comprising:
- a major amount of a refractory;
- a phenolic urethane binder;
- and
- at least one of:
- bis cyclopentadienyl iron, derivatives thereof, and mixtures thereof, present in an amount of from about 0.0005 parts to about 4 parts by weight, based on the weight of the resulting refractory composition;
- curing the formed shape;
- and
- removing the cured shape from the pattern as a foundry shape.
6 more elements
Dependencies are inferred from the claim text.