INK COMPOSITION FOR 3D PRINTING SUPPORTER AND 3D PRINTING PRODUCTION METHOD USING SAME

• US 20200131386A1
• Filed: 02/17/2017
• Published: 04/30/2020
• Est. Priority Date: 02/26/2016
• Status: Active Grant

• Current Assignee: LG Chem Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: Kim, Mi-Kyoung, Kim, Joon-Hyung, Back, Seung-A, Park, Sung-Eun
• Granted Patent: US 11,021,622 B2
• Time in Patent Office: Days
• CPC Class Codes: B29C 64/112 using individual droplets, e.g. from jetting heads
• CPC Class Codes: B29C 64/40 Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
• CPC Class Codes: B33Y 10/00 Processes of additive manufacturing
• CPC Class Codes: B33Y 70/00 Materials specially adapted for additive manufacturing
• CPC Class Codes: B33Y 80/00 Products made by additive manufacturing
• CPC Class Codes: C08F 18/08 Vinyl acetate
• CPC Class Codes: C08F 2/48 by ultraviolet or visible light
• CPC Class Codes: C08F 2/50 with sensitising agents
• CPC Class Codes: C08F 20/06 Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
• CPC Class Codes: C08F 20/28 containing no aromatic rings in the alcohol moiety
• CPC Class Codes: C08F 20/56 Acrylamide; Methacrylamide
• CPC Class Codes: C08K 5/5397 Phosphine oxides
• CPC Class Codes: C08L 2312/06 by radiation
• CPC Class Codes: C08L 31/04 Homopolymers or copolymers of vinyl acetate
• CPC Class Codes: C08L 33/064 containing anhydride, COOH or COOM groups, with M being metal or onium-cation
• CPC Class Codes: C08L 33/066 containing -OH groups
• CPC Class Codes: C08L 33/26 Homopolymers or copolymers of acrylamide or methacrylamide
• CPC Class Codes: C08L 39/06 Homopolymers or copolymers of N-vinyl-pyrrolidones
• CPC Class Codes: C09D 11/10 based on artificial resins
• CPC Class Codes: C09D 11/101 Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
• CPC Class Codes: C09D 11/30 : Inkjet printing inks

Abstract

Disclosed is an ink composition for a 3D printing supporter and a 3D printing production method using the same, in which the ink composition is usable for an inkjet 3D printer, has excellent jetting properties and is easily dissolved in water after curing so that a supporter can be easily removed. The ink composition for a 3D printing supporter comprises: an amine-containing monomer, a curing agent, and a water-soluble polymer having an amine-containing polymer.

Claims

1. An ink composition for a 3D printing supporter comprising:

an amine-containing monomer;

a curing agent; and

a water-soluble polymer containing an amine-containing polymer.

2. The ink composition for a 3D printing supporter according to claim 1, characterized in that the content of the amine-containing monomer is 10 to 99.9% by weight based on the total weight of the ink composition for a 3D printing supporter.

3. The ink composition for a 3D printing supporter according to claim 1, characterized in that the content of the curing agent is 0.01 to 20% by weight based on the total weight of the ink composition for a 3D printing supporter.

4. The ink composition for a 3D printing supporter according to claim 1, characterized in that the content of the water-soluble polymer is 0.01 to 30% by weight based on the total weight of the ink composition for a 3D printing supporter.

5. The ink composition for a 3D printing supporter according to claim 1, characterized in that the amine-containing monomer is a monomer having 1 to 30 carbon atoms and containing at least one amine group.

6. The ink composition for a 3D printing supporter according to claim 1, characterized in that the amine-containing monomer is selected from the group consisting of N,N-dimethylacrylamide, diacetone acrylamide, N-[3-(dimethylamino)propyl]methacrylamide, N-methyl-N-vinylacetamide, 2-(dimethylamino)ethylacrylate, N-vinylpyrrolidone, 4-acryloylmorpholine, N-methacryloylmorpholine, N-isopropyl acrylamide, 2-methyl-2-oxazoline, 2-ethyl-2-oxazoline, N-isopropyl-2-oxazoline, ethylene imine, and a mixture thereof.

7. The ink composition for a 3D printing supporter according to claim 1, characterized in that the curing agent is a photoinitiator.

8. The ink composition for a 3D printing supporter according to claim 1, characterized in that the water-soluble polymer is at least one selected from the group consisting of a polymer obtained by polymerizing amine-containing monomers and a water-soluble polymer obtained by polymerizing amine-free monomers.

9. The ink composition for a 3D printing supporter according to claim 1, characterized in that the water-soluble polymer is of type selected from the group consisting of a homopolymer and a copolymer.

10. The ink composition for a 3D printing supporter according to claim 8, characterized in that the polymer obtained by polymerizing amine-containing monomers is selected from the group consisting of polyvinylpyrrolidone, poly(N,N-dimethylacrylamide), poly(N-isopropylacrylamide), poly(N-acryloylmorpholine), poly(N-methacryloylmorpholine), poly(2-methyl-2-oxazoline), poly(2-ethyl-2-oxazoline), poly(N-isopropyl-2-oxazoline), polyethyleneimine, poly(2-isopropenyl-2-oxazoline-co-methylmethacrylate), poly(vinylpyrrolidone-co-vinyl acetate), and poly(N,N-dimethylacrylamide-co-2-hydroxyethyl methacrylate).

11. The ink composition for a 3D printing supporter according to claim 8, characterized in that the polymer obtained by polymerizing amine-free monomers is selected from the group consisting of polyacrylic acid, poly(2-hydroxyethyl acrylate), and poly(2-hydroxyethyl methacrylate).

12. The ink composition for a 3D printing supporter according to claim 1, characterized in that the ink composition for a 3D printing supporter further comprises a monomer containing at least one of a vinyl group and an acrylate group.

13. The ink composition for a 3D printing supporter according to claim 12, characterized in that the monomer containing at least one of the vinyl group and the acrylate group is at least one selected from the group consisting of vinyl acetate, 2-hydroxyethyl (meth)acrylate, 2-hydroxymethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, ethyl-2-hydroxy acrylate, 2-(acryloyloxy)ethyl hydrogen succinate, and methacrylic acid.

14. The ink composition for a 3D printing supporter according to claim 12, characterized in that the content of the monomer containing at least one of the vinyl group and the acrylate group is 0.01 to 80% by weight based on the total weight of the ink composition for a 3D printing supporter.

15. The ink composition for a 3D printing supporter according to claim 1, characterized in that the ink composition further comprises an additive.

16. The ink composition for a 3D printing supporter according to claim 1, characterized in that the additive is at least one selected from the group consisting of a surfactant, a plasticizer, a (thermal) polymerization inhibitor, a stabilizer, a defoaming agent, a diluent, and a viscosity controlling agent.

17. A method for producing 3D printing, characterized by using the ink composition for a 3D printing supporter according to claim 1.