Plastic and nonmetallic article shaping or treating: processes – Stereolithographic shaping from liquid precursor
Patent
1998-06-26
1999-11-09
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
Stereolithographic shaping from liquid precursor
264308, 264494, 264497, 419 13, 419 14, 419 15, 419 19, 419 45, 419 61, B29C 3508, B29C 4102
Patent
active
059808136
ABSTRACT:
Novel compositions and methods are provided for use in the stepwise, layer by layer fabrication of three-dimensional objects, in which a build material contains a metal having a covalent bond to a non-metal, and the layers are processed to produce the three-dimensional object at least in part through a chemical reaction which alters the covalent bond of the metal. In a first aspect of the invention the build material includes a metal that is covalently bound to a polymeric precursor. In another aspect of the invention, the build material includes a metal, Me, that is covalently bound to a first ligand, L.sub.1. Following deposition of the build material, the first ligand undergoes a redox reaction with a second ligand, L.sub.2, thereby breaking the covalent bond of the metal. In more preferred embodiments of this class, L.sub.1 and L.sub.2 react to form a gas, and the metal reacts to form an oxide such as MeSO.sub.x, MeNO.sub.x, MeCO.sub.x and so forth. In yet another aspect of the invention, multiple build materials are employed to provide non-uniformities such as electrical, thermal, and magnetic conduction paths, structural supports, chemical and wear resistant areas, and so forth.
REFERENCES:
patent: 5427733 (1995-06-01), Benda et al.
patent: 5573721 (1996-11-01), Gillette
Narang Subhash C.
Sharma Sunity
Stotts John S.
Ventura Susanna C.
Fish Robert D.
SRI - International
Tentoni Leo B.
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