Liquid radiation curable resins capable of curing into layers with selective visual effects and methods for the use thereof
AssigneeDsm IP Assets B.V.
InventorsBeth Rundlett, John Edmund SOUTHWELL, Brett REGISTER
Life of this patent
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Abstract
The invention relates to a method for forming a liquid radiation curable resin capable of curing into a solid upon irradiation comprising at least one thermally sensitive visual effect initiator. The liquid radiation curable resin is capable of curing into three-dimensional articles having selective visual effects. The resulting three-dimensional articles possess excellent color and/or transparency stability and excellent mechanical properties.
Claims21
1-18. (canceled)
A liquid radiation curable composition for additive fabrication comprising:
- (a) at least one thermally sensitive visual effect initiator selected from the group consisting of a thermochromic component and a thermally sensitive transparency modifier;
- (b) from about 45 to about 70 wt % of epoxies;
- (c) from about 5 to about 20 wt % of acrylates;
- (d) from about 10 to about 25 wt % of oxetanes;
- (e) from about 5 to about 15 wt % of photoinitiators;
- and
- (f) from 0 to about 10 wt % of additives;
- wherein the thermally sensitive visual effect initiator has the ability to change in color, transparency, or both due to a change in temperature, and the change in color, transparency, or both due to the change in temperature is non-permanent.
A liquid radiation curable composition for additive fabrication comprising:
- (a) from about 0.005 wt % to about 2 wt % of at least one thermally sensitive visual effect initiator selected from the group consisting of a thermochromic component and a thermally sensitive transparency modifier;
- (b) from about 45 to about 70 wt % of epoxies;
- (c) from about 10 to about 25 wt % of acrylates;
- (d) from about 5 to about 15 wt % of oxetanes;
- (e) from about 5 to about 15 wt % of polyols;
- (f) from about 5 to about 15 wt % of photoinitiators;
- and
- (g) from 0 to about 10 wt % of additives;
- wherein the thermally sensitive visual effect initiator has the ability to change in color, transparency, or both due to a change in temperature, and the change in color, transparency, or both due to the change in temperature is reversible.
Dependencies are inferred from the claim text.