Ink composition for 3D printing supporter and 3D printing production method using same

Patent metadata

Field	Value
Publication number	US-11021622-B2
Application number	US-201716062807-A
Country	US
Kind code	B2
Filing date	Feb 17, 2017
Priority date	Feb 26, 2016
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

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.

First claim

The invention claimed is:

1. An ink composition for a 3D printing supporter comprising:
an amine-containing monomer;
a curing agent; and
a water-soluble polymer containing at least two amine-containing polymers,
wherein the at least two amine-containing polymers are 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).

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 of type selected from the group consisting of a homopolymer and a copolymer.

9. The ink composition for a 3D printing supporter according to claim 1 , characterized in that the water-soluble polymer further comprises an amine-free polymer.

10. The ink composition for a 3D printing supporter according to claim 9 , characterized in that the amine-free polymer is selected from the group consisting of polyacrylic acid, poly(2-hydroxyethyl acrylate), and poly(2-hydroxyethyl methacrylate).

11. 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.

12. The ink composition for a 3D printing supporter according to claim 11 , 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.

13. The ink composition for a 3D printing supporter according to claim 11 , 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.

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

15. The ink composition for a 3D printing supporter according to claim 14 , 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.

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

Assignees

• Lg Chemical Ltd

Inventors

• Kim Mi-Kyoung
• Kim Joon-Hyung
• Back Seung-A
• Park Sung-Eun

Classifications

• C08F2/50

  with sensitising agents · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• B29C64/112

  using individual droplets, e.g. from jetting heads · CPC title

• C09D11/101 Primary

  Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing · CPC title

• C09D11/10

  based on artificial resins · CPC title