Patent ID: 7795349
Filing Date: 2010-09-14
Classification: B29C,B33Y

Abstract:
1. A material system for three dimensional printing comprising: a dry particulate material comprising an adhesive; a first fluid suitable for dissolving the adhesive, the first fluid comprising a fluid selected from the group consisting of isobutene, alkenes, alkyl-vinyl ethers, vinylacetals, dienes, n-vinyl carbazole, beta-pinene, oxiranes, n-substituted aziridines, lactams, and oxazolines; and a second fluid comprising a solidification agent that is a cationic initiator selected from the group consisting of sulfuric acid, perchloric acid, fluorosulfonic acid, trifluoromethyl sulfonic acid, trifluoroacetic acid, tin tetrachloride, aluminum trichloride, and boron trifluoride, wherein the dry particulate material is suitable for use in three dimensional printing to form an article comprised of a plurality of layers, and upon application of the first and second fluids to a first region of a layer of the dry particulate material, the first fluid dissolves the adhesive, and a reaction between the first fluid and the solidification agent causes a solidified material to form in the first region.