Photocurable support material composition for inkjet 3d printers, ink for inkjet 3d printers, cartridge for inkjet 3d printers, method for producing support material and method for producing optically shaped article

Patent metadata

Field	Value
Publication number	US-2019241684-A1
Application number	US-201716328950-A
Country	US
Kind code	A1
Filing date	Aug 30, 2017
Priority date	Sep 1, 2016
Publication date	Aug 8, 2019
Grant date	—

Abstract

In the present invention, a photocurable support material composition for an inkjet 3D printer comprises a water-soluble ethylenically unsaturated monomer containing an ionic group and a counter ion, and comprises a photopolymerization initiator. The ionic group is preferably at least one selected from a group consisting of carboxylic acid group, phosphoric acid group, and sulfonic acid group. The counter ion is preferably at least one selected from a group consisting of sodium ion, potassium ion, and ammonium ion.

First claim

1 . A photocurable support material composition for an inkjet 3D printer comprising:
a water-soluble ethylenically unsaturated monomer containing an ionic group and a counter ion: and a photopolymerization initiator.

2 . The photocurable support material composition for an inkjet 3D printer of claim 1 , wherein a content of said water-soluble ethylenically unsaturated monomer is more than 30 mass % in 100 mass % of said photocurable support material composition for an inkjet 3D printer.

3 . The photocurable support material composition for an inkjet 3D printer of claim 1 , further comprising another unsaturated monomer in an amount of less than 2 mass % in 100 mass % of said photocurable support material composition for an inkjet 3D printer.

4 . The photocurable support material composition for an inkjet 3D printer of claim 1 , further comprising an organic acid and/or a salt thereof.

5 . The photocurable support material composition for an inkjet 3D printer of claim 1 , wherein said ionic group is at least one selected from a group consisting of carboxylic acid group, phosphoric acid group, and sulfonic acid group.

6 . The photocurable support material composition for an inkjet 3D printer of claim 1 , wherein said counter ion is at least one selected from a group consisting of sodium ion, potassium ion, and ammonium ion.

7 . The photocurable support material composition for an inkjet 3D printer of claim 1 , wherein said water-soluble ethylenically unsaturated monomer has a carbon number of 3 to 15.

8 . The photocurable support material composition for an inkjet 3D printer of claim 1 , further comprising a solvent.

9 . The photocurable support material composition for an inkjet 3D printer of claim 6 , further comprising at least one of other water-soluble ethylenically unsaturated monomer containing an ionic group and a counter ion, in which said counter ion is selected from a group consisting of zinc ion, magnesium ion, calcium ion, aluminum ion and neodymium ion.

10 . The photocurable support material composition for an inkjet 3D printer of claim 1 , comprising:
20 to 70 mass % of said water-soluble ethylenically unsaturated monomer; 0.05 to 10.0 mass % of said photopolymerization initiator; and 20 to 75 mass % of a solvent.

11 . An ink for an inkjet 3D printer, the ink comprising the photocurable support material composition for an inkjet 3D printer of claim 1 .

12 . A cartridge for an inkjet 3D printer, the cartridge filled with the ink for an inkjet 3D printer of claim 11 .

13 . A method for producing a support material, wherein said support material is formed by using the photocurable support material composition for an inkjet 3D printer claim 1 .

14 . A method for producing an optically shaped article by using the photocurable support material composition for an inkjet 3D printer claim 1 , the method comprising:
a step for forming a support material by using said photocurable support material composition for an inkjet 3D printer or said ink for an inkjet 3D printer; a step for forming a model material; and a step for removing said support material.

15 . A method for producing a support material, Wherein said support material is formed by using the ink for an inkjet 3D printer of claim 11 .

16 . A method for producing an optically shaped article by - using the ink for an inkjet 3D printer of claim 11 , the method comprising:
a step for forming a support material by using said photocurable support material composition for an inkjet 3D printer or said ink for an inkjet 3D printer; a step for forming a model material; and a step for removing said support material.

Assignees

• Nippon Catalytic Chem Ind

Inventors

• Tsujino Yasunori
• Urata Minoru
• Majima Noriaki

Classifications

• B29C64/40

  Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• C08F20/06 Primary

  Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof · CPC title

• C08F2/48

  by ultraviolet or visible light · CPC title

• C08F120/06

  Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof · CPC title