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US 12,564,876 B2Granted
Co-reactive additive manufacturing compositions and articles for use in investment casting
AssigneePPG Industries Ohio, Inc.
InventorsBret M. Boyle, Cynthia Kutchko, Bryan W. Wilkinson, Jacob M. Kupas, Kerianne M. Dobosz
Life of this patent
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Abstract
Reactive additive manufacturing compositions with low amounts of noncombustible materials are provided, as well as methods of making and using the compositions. The compositions comprise two or more reactive components and a filler.
Claims14
A reactive additive manufacturing composition, comprising:
- a first reactive component;
- a second reactive component;
- and
- at least one filler that is nonreactive with at least one of the first reactive component and the second reactive component, the at least one filler present in a total amount from 1 wt. % to 20 wt. % based on a total weight of the composition;
- wherein the composition comprises, based on a total weight of the composition, a total amount of less than 2.5 wt. % of components that are noncombustible when subjected to a temperature of at least 450° C. for at least 12 hours;
- and
- wherein the first reactive component and the second reactive component react and cure at ambient conditions to form the reactive additive manufacturing composition.
4 more elements
A method of forming an object with a reactive additive manufacturing composition comprising:
- combining a first reactive component, a second reactive component, and at least one filler that is nonreactive with at least one of the first reactive component and the second reactive component;
- mixing the first component, the second component, and the filler to form a reactive additive manufacturing composition;
- wherein the first reactive component and the second reactive component react and cure at ambient conditions to form the reactive additive manufacturing composition;
- and
- depositing the reactive additive manufacturing composition through a nozzle fluidly coupled to the mixer to form a three-dimensional object, wherein the three-dimensional object comprises, based on a total weight of the three-dimensional object, a total amount of less than 2.5 wt. % of components that are noncombustible when subjected to a temperature of at least 450° C. for at least 12 hours.
2 more elements
Dependencies are inferred from the claim text.