Thiol-ene printable resins for inkjet 3D printing
US11208521B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2019 |
| Grant date | Dec 28, 2021 |
| Priority date | — |
| Expiry date | Oct 17, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/757
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition suitable for 3-D printing comprises, in one embodiment, a photopolymer including one or more thiol monomer, one or more alkene monomer, and a polymerization initiator. In another embodiment, the thiol monomer is selected from the group consisting of: glycol di(3-mercaptopropionate) [GDMP]; trimethylolpropane tris(3-mercaptopropionate) [TMPMP]; pentaerythritol tetrakis(3-mercaptopropionate) [PETMP] and 3,6-dioxa-1,8-octanedithiol [DODT]. In yet another embodiment, the alkene monomer comprises: an allyl-functional urethane/urea monomer synthesized from: an isocyanate moiety and a hydroxyl or amine functional allyl moiety. In still another embodiment, the hydroxyl or amine functional allyl moiety comprises 2-allyloxyethanol, allyl alcohol, and allylamine. In still yet another embodiment, the isocyanate moiety is selected from the group consisting of: isophorone diisocyanate (IDI), hexamethylene diisocyanate (HDI), trimethylhexamethylene diisocyanate (TMHDI), 1,3-bis(isocyanatomethyl)cyclohexane, and dicyclohexylmethane 4,4′-Diisocyanate (HMDI).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.