Polyurea resins having multiple mechanisms of hardening for use in producing three-dimensional objects
US9982164B2 · kind B2 · utility
68Cited by
206References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2016 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Aug 18, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/14
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A polymerizable liquid, or resin, useful for the production by additive manufacturing of a three-dimensional object of polyurethane, polyurea, or a copolymer thereof, is described. The resin includes at least one of (i) a blocked or reactive blocked prepolymer, (ii) a blocked or reactive blocked diisocyanate, or (iii) a blocked or reactive blocked diisocyanate chain extender.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.