Resin composition for modeling material, resin composition for supporting material, photofabrication product, and process for producing photofabrication product

1. A resin composition for a modeling material for use in shaping a modeling material by an ink-jet photofabrication method, the resin composition comprising, based on 100 parts by weight of the whole resin composition:

19 to 49 parts by weight of a water-insoluble monofunctional ethylenically unsaturated monomer (A), wherein the water-insoluble monofunctional ethylenically unsaturated monomer (A) comprises isobornyl (meth)acrylate;

15 to 50 parts by weight of a di- or more-functional polyfunctional ethylenically unsaturated monomer (B);

10 to 45 parts by weight of an oligomer (C), wherein the oligomer (C) is one or more selected from the group consisting of a urethane (meth)acrylate oligomer, an epoxy (meth)acrylate oligomer, and a polyester (meth)acrylate oligomer; and

5 to 15 parts by weight of a photopolymerization initiator (D).

2. The resin composition for a modeling material according to claim 1 , wherein the content of the (A) ingredient is 25 to 47 parts by weight, based on 100 parts by weight of the whole resin composition.

3. The resin composition for a modeling material according to claim 1 , wherein the content of the (B) ingredient is 20 to 45 parts by weight, based on 100 parts by weight of the whole resin composition.

4. The resin composition for a modeling material according to claim 1 , wherein the content of the (C) ingredient is 15 to 30 parts by weight, based on 100 parts by weight of the whole resin composition.

5. The resin composition for a modeling material according to claim 1 , wherein the resin composition further comprises a preservation stabilizer (F) at 0.05 to 3.0 parts by weight, based on 100 parts by weight of the whole resin composition.

6. A resin composition for a supporting material for use in shaping a supporting material by an ink-jet photofabrication method, the resin composition comprising, based on 100 parts by weight of the whole resin composition:

20 to 50 parts by weight of a water-soluble monofunctional ethylenically unsaturated monomer (G);

20 to 49 parts by weight of polyalkylene glycol (H) comprising an oxyethylene group and/or an oxypropylene group;

35 parts by weight or less of a water-soluble organic solvent (I); and

a photopolymerization initiator (D).

7. The resin composition for a supporting material according to claim 6 , wherein the content of the (G) ingredient is 25 to 45 parts by weight, based on 100 parts by weight of the whole resin composition.

8. The resin composition for a supporting material according to claim 6 , wherein the content of the (H) ingredient is 25 to 45 parts by weight, based on 100 parts by weight of the whole resin composition.

9. The resin composition for a supporting material according to claim 6 , wherein the content of the (D) ingredient is 5 to 20 parts by weight, based on 100 parts by weight of the whole resin composition.

10. The resin composition for a supporting material according to claim 6 , wherein the content of the (I) ingredient is 5 parts by weight or more, based on 100 parts by weight of the whole resin composition.

11. The resin composition for a supporting material according to claim 6 , wherein the resin composition further comprises a preservation stabilizer (F) at 0.05 to 3.0 parts by weight, based on 100 parts by weight of the whole resin composition.

12. A photofabrication product comprising a modeling material which is obtained by photocuring a resin composition for a modeling material according to claim 1 , by an ink-jet photofabrication method.

13. The resin composition for a modeling material according to claim 1 , wherein the resin composition has a viscosity of 70 mPa·s or less at 25° C.

14. The resin composition for a modeling material according to claim 1 , wherein the content of the (C) ingredient is 10 to 30 parts by weight, based on 100 parts by weight of the whole resin composition.