US 11,298,871 B2 · Soluble material for three-dimensional molding

Abstract

The present invention is a soluble material for three-dimensional modeling that is used as a material of a support material for supporting a three-dimensional object when the three-dimensional object is manufactured by a 3D printer of a fused deposition modeling system and that contains a thermoplastic resin having a hydrophilic group and an organic salt compound represented by a general formula (I) below: (R1—SO3−)nXn+ (I). According to the present invention, it is possible to provide a soluble material for three-dimensional modeling that is used for a support material and that is capable of suppressing the degradation of the modeling accuracy of a three-dimensional object when the three-dimensional object is manufactured by a 3D printer of a fused deposition modeling system, and has a high rate of dissolution to neutral water to be removable speedily from a precursor of the three-dimensional object without use of a strong alkaline aqueous solution.

Claims14

Dependent claims

A soluble material for three-dimensional modeling used as a material of a support material for supporting a three-dimensional object when the three-dimensional object is manufactured by a 3D printer of a fused deposition modeling system, the soluble material comprising

a thermoplastic resin having a hydrophilic group and
an organic salt compound represented by formula (I) below:
(R1—SO3−)nXn+ (I)
where R1 represents a hydrocarbon group that optionally has a substituent group and that has 1 to 30 carbon atoms;
n represents a number of 1 or 2;
when n is 1, Xn+ represents a sodium ion, a potassium ion, a lithium ion, an ammonium ion, or a phosphonium ion;
and when n is 2, Xn+ represents a magnesium ion, a calcium ion, a barium ion, or a zinc ion,
wherein a content of the hydrophilic group in the thermoplastic resin is 0.5 mmol/g or more and 3.0 mmol/g or less.

5 more elements

Dependencies are inferred from the claim text.

Soluble material for three-dimensional molding

Life of this patent

Soluble material for three-dimensional molding

Life of this patent

Abstract

Claims14