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US 5,860,467 AGranted
Use of CO.sub.2 -soluble materials in making molds
AssigneesThe University of North Carolina at Chapel Hill, Wayne State University
InventorsJoseph M. DeSimone, Esin Gulari, Charles Manke, Jr.
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Abstract
A structure of CO.sub.2 -insoluble material has a three-dimensional object of CO.sub.2 -soluble material positioned inside. The object is contacted with a fluid containing carbon dioxide which dissolves the object in the fluid. The fluid is then removed to form a cavity in the structure.
Claims12
A method for forming a three-dimensional cavity in a corresponding structure comprising:
- providing a structure comprising CO.sub.2 -insoluble material, wherein said structure has a three-dimensional object comprising CO.sub.2 -soluble material positioned therein, the CO.sub.2 -soluble material including at least one substituent selected from the group consisting of a fluorinated component, a siloxane-containing component, and mixtures thereof;
- then
- contacting said object with a fluid comprising carbon dioxide to dissolve said object in said fluid;
- and then
- removing said fluid to form a cavity in said structure, said cavity having a shape corresponding to the shape of said three-dimensional object.
2 more elements
Dependencies are inferred from the claim text.