Compositions and methods for selective deposition modeling

Patent metadata

Field	Value
Publication number	US-8975352-B2
Application number	US-201314082471-A
Country	US
Kind code	B2
Filing date	Nov 18, 2013
Priority date	May 12, 2009
Publication date	Mar 10, 2015
Grant date	Mar 10, 2015

Abstract

There is provided compositions and methods for producing three-dimensional objects by selective deposition modeling with a polar build material and a non-polar support material. The build material comprises a hydrocarbon wax material and a viscosity modifier, and the support material comprises a hydrocarbon alcohol wax material and a viscosity modifier. After the selective deposition modeling process has been completed, the object can be placed in a bath of polar solvent to remove the support material. The particular materials provided herein, and the post-processing methods associated therewith, provide for improved part quality of the three-dimensional object and for improved post-processing techniques. The three-dimensional objects can subsequently be used in a number of applications, such as patterns for investment casting.

First claim

That which is claimed:

1. A method of separating a three-dimensional object produced with build material from a support material used to support the build material during the production of the three-dimensional object, the method comprising:
positioning the three-dimensional object and the support material in a bath of polar solvent;
agitating the bath of polar solvent with respect to the support material in the bath; and
removing a white residue from the three-dimensional obj…

Assignees

• 3D Systems Inc

Inventors

• Stockwell John
• Xu Pingyong

Classifications

• B33Y70/10

  Operations & Transport · mapped topic

• B32B38/10 Primary

  Operations & Transport · mapped topic

• B29C67/0059

  Operations & Transport · mapped topic

• B29C71/0009

  Operations & Transport · mapped topic

• C08L91/08

  Chemistry & Metallurgy · mapped topic