Method of making a 3-D object from photocurable compositions containing reactive polysiloxane particles
US8182882B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2007 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Dec 15, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31909
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of making a 3-D object from a photocurable composition, including (a) a cationically curable monomer; (b) a radically curable monomer; (c) reactive particles comprising a crosslinked polysiloxane core and a shell of reactive groups on an outer surface of the core, wherein the reactive groups comprise epoxy groups, ethylenically unsaturated groups, or hydroxy groups; (d) a radical photoinitiator; and (e) a cationic photoinitiator; the method comprising (1) forming a first layer of the photocurable composition; (2) exposing the first layer to actinic radiation sufficient to harden the first layer; (3) forming a second layer of the photocurable composition above the hardened first layer; (4) exposing the second layer to actinic radiation sufficient to harden the second layer; and (5) repeating steps (3)-(4) as needed to form a 3-D object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.