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US 12,703,141 B2Granted
Composition of photopolymerizable resins and method to produce an article using this composition
OwnerMassimo Messori, Federica Bondioli +1inventors
InventorsMassimo Messori, Federica Bondioli, Giampaolo Melli
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Abstract
There are described compositions of photopolymerizable resins containing functional (meth)acrylic groups and one or more radical polymerization photoinitiators, stereolithographic methods of producing articles using these resins and articles thus obtained.
Claims9
A composition of photopolymerizable resins consisting of:
- (A) derivatives of diurethane dimethacrylates having the following formula:
- wherein R and R′ are the same or different, and are selected from H and methyl, and/or its oligomers with a molecular weight up to 6000 g/mol;
- (B) one or more of the following (meth)acrylic monomers:
- (C) one or more radical polymerization photoinitiators for said monomers and/or oligomers;
- and
- (D) one or more additives chosen from the group consisting of organic and inorganic dyes and UV absorbers for the control of the printing resolution with high absorbance at the typical wavelengths of the radiant sources.
3 more elements
Dependencies are inferred from the claim text.