Compositions and methods for selective deposition modeling
US6406531B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Mar 7, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/34
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Phase change compositions that are solid at ambient temperature and liquid at an elevated temperature above ambient temperature are disclosed for advantageous use in selective deposition modeling methods for building three-dimensional objects. A phase change composition according to the disclosed invention is a semi-crystalline component mixture having a freezing point of at least about 68° C., a melting point of at least about 88° C. and a viscosity of about 13 centipoise at 135° C. The composition includes a plurality of waxes having a broad melting point range and molecular weight range. Three-dimensional objects having minimal curl, delamination and stress cracks can be produced at a faster rate than heretofore known by using selective deposition modeling techniques employing the disclosed compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.