Use of isosorbide

1. A process for preparing a three-dimensional object, the process comprising:

producing a sacrificial support comprising a polymer including isosorbide ether repeating units and not comprising a bisphenol A based epoxy resin, the sacrificial support being produced by a process comprising:

providing a composition comprising isosorbide diglycidyl ether and a curing agent,

casting the composition in a mould,

at least partially curing the composition, and

separating the cured composition from the mould to obtain the sacrificial support;

depositing a material to at least partially cover the sacrificial support, wherein the material comprises a polymer; and

removing the sacrificial support from the deposited material to obtain the three-dimensional object.

2. The process of claim 1 , wherein the curing agent has at least one amine functional group having at least one active hydrogen linked to an amine nitrogen.

3. The process of claim 1 , wherein the curing agent has two amine functional groups each having at least one active hydrogen linked to an amine nitrogen.

4. The process of claim 1 , wherein the composition further comprises at least one organic filler.

5. The process of claim 4 , wherein the at least one organic filler includes one or more of a phenolic resin, an acrylic resin, poly(vinyl alcohol), polyvinyl acetate), ethylene-vinyl acetate, and rubber.

6. The process of claim 1 , wherein the composition further comprises at least one foaming agent.

7. The process of claim 6 , wherein the at least one foaming agent includes one or more of a polysiloxane, polymethylhydrosiloxane, silicone hybride, and a silicone derivative.

8. The process of claim 1 , wherein the polymer including the isosorbide ether repeating units further comprises amine groups.

9. The process of claim 1 , wherein the sacrificial support has a Tg between 50 and 180° C., measured via differential scanning calorimetry according to ASTM D 3418.

10. The process of claim 1 , wherein the sacrificial support has elongation at break in the range of 3.5 and 10.5% measured at 25° C. according to ASTM D 638.

11. The process of claim 1 , wherein the curing is performed for a time in the range of 2 to 30 hours.

12. The process of claim 1 , wherein removing the sacrificial support from the deposited material comprises contacting the sacrificial support with an aqueous acidic solution.

13. The process of claim 1 , wherein the deposited material comprises a curable polymer, and the process further comprises curing the curable polymer before removing the sacrificial support from the deposited material.

14. The process of claim 1 , wherein the deposited material comprises a composite material.

15. The process of claim 1 , wherein the curing agent comprises one or more of a poly(propylene glycol) bis(2-aminopropyl ether), trimethylolpropane tris [poly(propylene glycol), amine terminated] ether, 2(1-piperazinyl)ethylamine, 3,6,9,12-tetraazatetradecane-1,14-diamine, tetraethylenepentamine, 3,6-diazoctanethylenediamine, 3,6,9-triazaundecamethylenediamine, 1,3-bis(aminomethyl)benzene, 1,3-bis(aminomethyl)cyclohexane, a mixture of 5-diethyl toluene-2,4-diamine and 3,5-diethyl toluene-2,6-diamine, 2,2′-(ethylenedioxy) bis(ethylamine), 1,6-diamino-2,2,4(2,4,4)-trimethylhexane, N′-(3-aminopropyl)-N,N-dimethylpropane-1,3-diamine, and 4,4′-diaminodicyclohexylmethane.

16. A process for preparing a three-dimensional object, the process comprising:

producing a sacrificial support comprising a polymer including isosorbide ether repeating units and not comprising a bisphenol A based epoxy resin, the sacrificial support being produced by a three-dimensional printing process using a composition comprising isosorbide diglycidyl ether and a curing agent;

depositing a material to at least partially cover the sacrificial support, wherein the material comprises a polymer; and

removing the sacrificial support from the deposited material to obtain the three-dimensional object.