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US 7,235,505 B2Granted
Carbide and nitride ternary ceramic glove and condom formers
AssigneeAnsell Healthcare Products LLC
InventorsStanley J. Gromelski, Paul Cacioli, Richard L. Cox
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Abstract
A slip-cast article former containing ternary ceramics, particularly of carbide and nitride materials, having the formula Mn+1AXn(MAX), where M is a transition metal, A is an element from Groups IA and IVA of the periodic table, X is nitrogen or carbon and n is 1, 2, or 3. The ternary ceramic article may be a glove or condom former. A process for making a ternary ceramic article employing a slip cast method.
Claims21
A hollow slip-cast article comprising:
- a ternary ceramic material having chemical formula of Mn+1AXn, where M is a transition metal, where A is an element selected from the group consisting of Group IIIA elements, Group IVA elements, S, P, As, and Cd, where X is selected from the group consisting of carbon, nitrogen, and combinations thereof, and where n is selected from the group consisting of 1, 2, and 3.
A method for forming a slip-cast article comprising:
- preparing an aqueous dispersion of a ternary ceramic material having chemical formula of Mn+1AXn, where M is a transition metal, where A is an element selected from the group consisting of Group IIIA elements, Group IVA elements, S, P, As, and Cd, where X is selected from the group consisting of carbon, nitrogen, and combinations thereof, and where n is selected from the group consisting of 1, 2, and 3;
- introducing a quantity of the aqueous dispersion into a mold, the mold having a cavity therein with an interior surface defining a preselected hollow shape, to substantially fill the cavity;
- allowing a layer of the ternary ceramic material to develop on the interior surface of the cavity;
- removing an excess of aqueous dispersion from the cavity;
- forming the slip-cast article from the layer of ternary ceramic material;
- separating the mold and the slip-cast article;
- drying the slip-cast article;
- and
- sintering the slip-cast article.
6 more elements
Dependencies are inferred from the claim text.