Ink composition for 3D printing support and 3D printing manufacturing method using the same

Patent metadata

Field	Value
Publication number	US-10954404-B2
Application number	US-201615745736-A
Country	US
Kind code	B2
Filing date	Jul 19, 2016
Priority date	Jul 20, 2015
Publication date	Mar 23, 2021
Grant date	Mar 23, 2021

Abstract

The present invention relates to an ink composition for a 3D printing support, comprising an amine-containing monomer and a curing agent. According to the present invention, an ink composition for a 3D printing support, which retains an excellent jetting property, is well dissolved in water after being photo-cured to be easily removed, and has less curing contraction and excellent storage stability, can be provided.

First claim

The invention claimed is:

1. An ink composition for a 3D printing support, the ink composition comprising an amine-containing monomer, a photoinitiator, a water soluble polymer, a vinyl ether compound, and a monomer containing at least one of a vinyl group and an acrylate group,
wherein the amine-containing monomer is the compound of the following Formula 1:

wherein R 1 is hydrogen or methyl, and R 2 and R 3 are each independently hydrogen, C 1 to C 10 alkyl, vinyl, alkoxyl, cyclohexyl, phenyl, benzyl, alkylamine, alkyl ester, alkyl ether,

wherein the water soluble polymer is at least one of the compounds of the following Formula 8a to Formula 8d:

wherein n is 50 to 25,000,
and the water soluble polymer is included in an amount of 0.1 to 30 wt % based on the total weight of the ink composition, and
wherein the vinyl ether compound is selected from 4-hydroxybutyl vinyl ether, ethyl vinyl ether, butyl vinyl ether, cyclohexyl vinyl ether, 2-ethylhexyl vinyl ether, dodecyl vinyl ether, diethylene glycol divinyl ether, 1,4-cyclohexane dimethanol divinyl ether, triethylene glycol divinyl ether or 1,4-butanediol divinyl ether,
wherein the ink composition when cured is dissolvable in water.

2. The ink composition for a 3D printing support according to claim 1 , wherein the C 1 to C 10 alkyl is methyl, ethyl, propyl, isopropyl, n-butyl, tert-butyl, or

the alkylamine is

and the alkyl ether is —R″ 1 —O—R″ 2 , wherein R′ 1 is CH 2 , CH 2 CH 2 , CH 2 CH 2 CH 2 , CH 2 CH 2 CH 2 CH 2 , CH 2 C(CH 3 ) 2 or C(CH 3 ) 2 CH 2 CH 2 , R′ 2 and R′ 3 are each independently hydrogen, CH 3 , CH 2 CH 3 , CH 2 CH 2 CH 3 , CH 2 CH(CH 3 ) 2 , CH 2 C(CH 3 ) 3 , CH(CH 3 ) 2 , CH 2 CH 2 CH 2 CH 3 , C(CH 3 ) 2 CH 2 CH 3 or —CH═CH 2 , R″ 1 is CH 2 , CH 2 CH 2 , CH 2 CH 2 CH 2 , CH(CH 2 )CH 2 , CH 2 CH 2 CH 2 CH 2 , CH 2 C(CH 3 ) 2 or C(CH 3 ) 2 CH 2 CH 2 , and R″ 2 is hydrogen, CH 3 , CH 2 CH 3 , CH 2 CH 2 CH 3 , CH 2 CH(CH 3 ) 2 , CH 2 C(CH 3 ) 3 , CH(CH 3 ) 2 , CH 2 CH 2 CH 2 CH 3 , or C(CH 3 ) 2 CH 2 CH 3 .

3. The ink composition for a 3D printing support according to claim 1 , wherein the compound of Formula 1 is the compound of the following Formula 1a:

wherein R′ 1 is hydrogen or methyl, and R′ 2 and R′ 3 are each independently methyl, ethyl, propyl, isopropyl, n-butyl, or tert-butyl.

4. The ink composition for a 3D printing support according to claim 1 , wherein the monomer containing at least one of a vinyl group and an 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-hydroxyacrylate, 2-(acryloyloxy)ethyl hydrogen succinate and methacylic acid.

5. The ink composition for a 3D printing support according to claim 1 , which further comprises an additive, which is at least one selected from the group consisting of a surfactant, a plasticizer, a polymerization inhibitor, an antifoaming agent, a diluent, a thermal stabilizer and a viscosity controlling agent.

6. A manufacturing method for 3D printing which uses the ink composition for a 3D printing support of claim 1 .

Assignees

• Lg Chemical Ltd

Inventors

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

Classifications

• C09D11/30 Primary

  Inkjet printing inks · CPC title

• B33Y70/00

  Materials specially adapted for additive manufacturing · CPC title

• C09D11/106

  containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• C09D11/38 Primary

  characterised by non-macromolecular additives other than solvents, pigments or dyes · CPC title

• C09D11/101

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