Composition for treating three-dimensional object precursor

1. A method for manufacturing a three-dimensional object, the method comprising:

obtaining a precursor of the three-dimensional object containing the three-dimensional object and a support material by a fused deposition modeling system; and

contacting the precursor with a composition to remove the support material,

wherein

the composition comprises water and a water-soluble compound having a solubility parameter of 8 (cal/cm 3 ) 1/2 to 13 (cal/cm 3 ) 1/2 calculated by the Fedors' method, and

a soluble material, which is a material of the support material, contains a resin having a hydrophilic group, which is at least one of a polyester resin having a hydrophilic group and a polyamide resin having a hydrophilic group, and

the composition is neutral and has a pH of 6 to 8.

2. The method according to claim 1 , wherein

the resin having a hydrophilic group is a polyester resin, which comprises

a hydrophilic monomer unit A 1 having a hydrophilic group,

a hydrophobic dicarboxylic acid monomer unit B 1 , and

a diol monomer unit; and

a ratio of the hydrophilic monomer unit A 1 to a total amount of the hydrophilic monomer unit A 1 and the hydrophobic dicarboxylic acid monomer unit B 1 in the polyester resin is 10 mol % to 70 mol %.

3. The method according to claim 2 , wherein a monomer A 1 for deriving the hydrophilic monomer unit A 1 is at least one selected from the group consisting of 5-hydroxyisophthalic acid, 1,3,5-benzene tricarboxylic acid, 5-aminoisophthalic acid, 5-sulfoisophthalic acid, 2-sulfoterephthalic acid, and 4-sulfo-2,6-naphthalene dicarboxylic acid.

4. The method according to claim 2 , wherein a monomer B 1 for deriving the hydrophobic dicarboxylic acid monomer unit B 1 is at least one selected from the group consisting of terephthalic acid, isophthalic acid, 2,5-furan dicarboxylic acid, 2,6-naphthalene dicarboxylic acid, 1,4-cyclohexane dicarboxylic acid, and 1,3-adamantane dicarboxylic acid.

5. The method according to claim 1 , wherein

the resin having a hydrophilic group is a polyamide resin, which comprises

a hydrophilic monomer unit A 2 having a hydrophilic group,

a hydrophobic dicarboxylic acid monomer unit B 2 , and

a hydrophobic diamine monomer unit; and

a ratio of the hydrophilic monomer unit A 2 to a total amount of all monomer units in the polyamide resin is 2.5 mol % to 40 mol %.

6. The method according to claim 5 , wherein a monomer A 2 for deriving the hydrophilic monomer unit A 2 is at least one selected from the group consisting of 5-hydroxyisophthalic acid, 1,3,5-benzene tricarboxylic acid, 5-aminoisophthalic acid, 5-sulfoisophthalic acid, 2-sulfoterephthalic acid, and 4-sulfo-2,6-naphthalene dicarboxylic acid.

7. The method according to claim 5 , wherein a content of the hydrophilic group in the polyamide resin is 0.5 mmol/g to 3.0 mmol/g.

8. The method according to claim 1 , wherein a glass transition temperature (Tg) of the resin having a hydrophilic group is 50° C. to 250° C.

9. The method according to claim 1 , wherein a glass transition temperature (Tg) of the soluble material is 50° C. to 250° C.

10. The method according to claim 1 , wherein the water-soluble compound in the composition is at least one compound of formula (1):

wherein

R 1 is a benzyl group, R 2 is a hydrogen atom, and X is a (EO) m1 (PO) n1 group, wherein m1 is an integer of 1 to 200, and n1 is 0 to 50; or

R 1 is an alkyl group having 4 to 22 carbon atoms, R 2 is a hydrogen atom, and X is a (EO) m1 (PO) n1 group, wherein m1 is an integer of 2 to 200, and n1 is 0 to 50.

11. The method according to claim 1 , wherein a content of the water-soluble compound in the composition ranges from 1% by mass to 80% by mass.