Photopolymer composition for 3D printing
AssigneeNano and Advanced Materials Institute Limited
InventorsJifan Li, Wai Yan Chan, Ka Kit Yee, Ka Leung Kevin Cheuk
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Abstract
The present invention provides photopolymer compositions for 3D printing which have low viscosity, proper curing rate, low volume shrinkage, and low ash content. Such compositions may be used in 3D printing for direct investment casting of products and rapid prototyping.
Claims19
A photopolymer composition that produces 3D printed objects, the photopolymer composition comprising:
- at least one polyfunctional (meth)acrylate monomer;
- at least one space-filling monomer or organic compounds;
- at least one (meth)acrylate monomer;
- at least one photo-initiator;
- and
- at least one light stabilizer,
- wherein the at least one light stabilizer controls a cure depth of the 3D printed objects having a low ash content, prevents photodegradation, and is selected from a group consisting of Sudan dyes, 2-(2′-hydroxy-3′,5′-di-tert-butylphenyl)-5-chlorobenzortriazole, 2-(2′-hydroxy-3′-tert-butyl-5′-methylphenyl)-5-chlorobenzortriazole, 2,2′-(2,5-thiophenediyl)bis(5-tert-butylbenzoxazole) and (2,5-bis(5-tert-butyl-benzoxazol-2-yl)thiophene.
A photopolymer composition that produces 3D printed objects, the photopolymer composition comprising:
- at least one polyfunctional (meth)acrylate monomer;
- at least one space-filling monomer or organic compounds;
- at least one (meth)acrylate monomer;
- at least one photo-initiator;
- and
- at least one light stabilizer that is selected from a group consisting of Sudan dyes, 2-(2′-hydroxy-3′,5′-di-tert-butylphenyl)-5-chlorobenzortriazole, 2-(2′-hydroxy-3′-tert-butyl-5′-methylphenyl)-5-chlorobenzortriazole, 2,2′-(2,5-thiophenediyl)bis(5-tert-butylbenzoxazole) and (2,5-bis(5-tert-butyl-benzoxazol-2-yl)thiophene.
A photopolymer composition that produces 3D printed objects, the photopolymer composition comprising:
- at least one polyfunctional (meth)acrylate monomer;
- at least one space-filling monomer or organic compounds;
- at least one (meth)acrylate monomer;
- at least one photo-initiator;
- and
- at least one light stabilizer,
- wherein the photopolymer composition produces the 3D printed objects that have a low ash content with an ash content at 600° C. of less than 0.1%.
Dependencies are inferred from the claim text.