	US 7,479,510 B2
	Compositions and methods for use in three dimensional model printing
Eduardo Napadensky, Netanya (Israel); and Avi Levy, Petach Tikva (Israel)
Assigned to Objet Geometries Ltd., Rehovot (Israel)
Filed on Sep. 11, 2006, as Appl. No. 11/518,295.
Application 11/518295 is a continuation of application No. 11/098690, filed on Apr. 05, 2005, granted, now 7,183,335.
Application 11/098690 is a continuation of application No. 10/424732, filed on Apr. 29, 2003, abandoned.
Application 10/424732 is a continuation in part of application No. 09/803108, filed on Mar. 12, 2001, granted, now 6,569,373.
Claims priority of provisional application 60/188698, filed on Mar. 13, 2000.
Claims priority of provisional application 60/195321, filed on Apr. 10, 2000.
Prior Publication US 2007/0168815 A1, Jul. 19, 2007
This patent is subject to a terminal disclaimer.
Int. Cl. B29C 67/00 (2006.01); G03C 9/08 (2006.01); G03F 7/00 (2006.01); C08G 65/34 (2006.01)

U.S. Cl. 522—75 [522/79; 522/81; 522/83; 522/84; 522/96; 522/175; 522/181; 522/182; 524/804; 524/832; 528/392; 528/425; 430/269]

32 Claims

1. A composition suitable for support in building a three dimensional object, said composition comprising:

at least one curable component,

at least one non-curable component, said non-curable component being a polyol or glycol compound,

wherein none of said non-curable components is reactive with any of said curable components;

a surface additive for reducing surface tension; and

a stabilizer;

wherein all components of the composition are either miscible or soluble in the composition and said composition has a first viscosity of 100-500 cps at ambient temperature and a second viscosity of <20 cps at a temperature higher than said ambient temperature;

wherein, after irradiation, said composition results in a solid, a semi solid or a gel material capable of dissolving or swelling upon exposure to water, to an alkaline or acidic water solution or to a water detergent solution.