Light-curable article of manufacture with portions of differing solubility
US10800094B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2016 |
| Grant date | Oct 13, 2020 |
| Priority date | — |
| Expiry date | Jun 29, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2810/20
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Provided herein is a polymerizable liquid composition useful for additive manufacturing, which composition may include: (i) a free radical photoinitiator; (ii) monomers and/or prepolymers (e.g., reactive diluents) that are polymerizable by exposure to actinic radiation or light, optionally wherein some or all of said monomers and/or prepolymers comprise one or more acid-labile or base-labile groups; (iii) a crosslinker comprising one or more acid-labile or base-labile groups; and (iv) a photoacid generator or a photobase generator, wherein said free radical photoinitiator and said photoacid generator or photobase generator are, or are selected to be, activated by light at different ranges of wavelengths or intensities. Methods of forming a three-dimensional object with the composition, and articles so formed are also provided. Methods of removing a portion of the article by dissolving in a polar or non-polar solvent are further provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.