Foundry refractory binder
AssigneePhillips Petroleum Company
InventorGeorge M. Allison, III
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Abstract
This invention relates to the preparation of foundry molds and foundry cores using a low molecular weight high vinyl poly(1,3-butadiene).
Claims50
In the casting of metal products using a foundry core or mold comprising finely divided particulate refractory material, the improvement comprising employing a core or mold prepared by admixing said refractory material with a suitable amount of a binder comprising poly(1,3-butadiene) having a vinyl content of at least 40 percent and a molecular weight of no more than about 50,000 to obtain a flowable hardenable foundry composition having a substantially uniform distribution of poly(1,3-butadiene) throughout;
- forming the hardenable foundry composition into the desired shape;
- and then curing the hardenable foundry composition.
A method for forming a readily flowable hardenable foundry composition suitable for making shaped products useful as foundry cores or molds comprising admixing a suitable particulate refractory material and a suitable amount of a binder comprising poly(1,3-butadiene) having a vinyl content of at least 40 percent and a molecular weight of no more than about 50,000.
An article comprising a foundry core or mold produced by admixing a suitable amount of a binder comprising poly(1,3-butadiene) having a vinyl content of at least 40 percent and a molecular weight of no more than about 50,000 with a suitable particulate refractory material to obtain a flowable hardenable composition having a substantially uniform distribution of poly(1,3-butadiene) throughout;
- forming the hardenable foundry composition into the desired shape, and then curing the hardenable foundry composition.
A hardenable foundry composition suitable for forming shaped products useful as foundry cores or molds comprising a suitable amount of a suitable particulate refractory material, and a suitable amount of a binder comprising poly(1,3-butadiene), and optionally a suitable amount of a curing system for said poly(1,3-butadiene);
- wherein said poly(1,3-butadiene) has a vinyl content of at least about 40 percent and a molecular weight of no more than about 50,000.
Dependencies are inferred from the claim text.