Water soluble ink-jet composition for 3D printing
A material composition, which may be a support material, for three-dimensional (3D) inkjet printing is disclosed. The material composition may comprise a glycol polymer, a low molecular weight polar substance and a surface-active agent. The glycol polymer may be polyethylene glycol (PEG) having a molecular weight between about 1000 and about 6000 and the low molecular weight polar substance may be 1,8-octanediol.
1. A material composition for three-dimensional inkjet printing comprising:
polyethylene glycol (PEG) having a molecular weight between about 1000 and about 6000; and
1,8-octanediol, wherein the composition has a melting point between 45° C.-70° C. and solidifies upon cooling.
2. The material composition according to claim 1 , further comprises a surface active agent.
3. The material composition according to claim 1 , wherein the material composition is water-miscible before hardening and water-soluble after hardening.
4. The material composition according to claim 1 , wherein the amount of the PEG is 10-70% w/w of the material composition.
5. The material composition according to claim 1 , wherein the amount of the 1,8-octanediol is 30-90% w/w of the material composition.
6. The material composition according to claim 2 , wherein the amount of the surface active agent is about 0.5% w/w of the material composition.
7. The material composition according to claim 1 , wherein the molecular weight of the PEG is about 1500.
8. The material composition according to claim 1 , wherein the material composition is a soluble support material for three-dimensional inkjet printing.
9. The material composition according to claim 1 , wherein the material composition is soluble in water or ethyl alcohol or N-methyl-2-pyrrolydone or a combination thereof.
10. The material composition according to claim 2 , wherein the molecular weight of the PEG is 1500, the amount of the PEG is about 25% w/w of the material composition and the amount of the 1,8-OctaneDiol is about 75% w/w of the material composition.
11. The material composition according to claim 2 , wherein the molecular weight of the PEG is 1500, the amount of the PEG is about 30% w/w of the material composition and the amount of the 1,8-OctaneDiol is about 70% w/w of the material composition.
12. The material composition according to claim 2 , wherein the molecular weight of the PEG is 4000, the amount of the PEG is about 20% w/w of the material composition and the amount of the 1,8-OctaneDiol is about 80% w/w of the material composition.