Compositions and methods for use in three dimensional model printing
AssigneeStratasys, Inc.
InventorsEduardo Napadensky, David Brusilovsky
Life of this patent
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Abstract
A radiation curing composition suitable for building a three-dimensional object by a solid freeform method is disclosed. The composition includes one or more mono-functional monomers where a respective polymer has a Glass Transition Temperature higher than about 60° C., one or more di-functional oligomers where a respective polymer has a Glass Transition Temperature lower than about 40° C. and a phase separation inducing component. The phase separation may be induced during curing, resulting in a non-clear cured material having an improved impact strength and higher elongation, when compared to similar compositions without a phase separation inducing component.
Claims19
A composition suitable for building a three dimensional object by three-dimensional printing, the composition comprising:
- one or more mono-functional monomers;
- and
- one or more di-functional oligomers,
- wherein functional groups of the one or more monomers and one or more oligomers are meth(acrylic), the composition has a viscosity of about 50-500 cps at ambient temperature, the concentration of said one or more mono-functional monomers is at least 20% by weight and the concentration of said one or more di-functional oligomers is at least 20% by weight.
A method for the preparation of a three-dimensional object by three-dimensional printing, the method comprising:
- dispensing from a printing head a composition that comprises one or more mono-functional monomers and one or more di-functional oligomers, wherein functional groups of the one or more monomers and one or more oligomers are meth(acrylic), the composition has a viscosity of about 50-500 cps at ambient temperature, the concentration of said one or more mono-functional monomers is at least 20% by weight and the concentration of said one or more di-functional oligomers is at least 20% by weight;
- and
- curing the composition.
A three-dimensional object comprising:
- a multiplicity of construction layers formed by curing a composition that comprises one or more mono-functional monomers and one or more di-functional oligomers, wherein functional groups of the one or more monomers and one or more oligomers are meth(acrylic), the composition has a viscosity of about 50-500 cps at ambient temperature, the concentration of said one or more mono-functional monomers is at least 20% by weight and the concentration of said one or more di-functional oligomers is at least 20% by weight, wherein after curing, the composition results in a solid material.
Dependencies are inferred from the claim text.