Active energy ray curable composition, stereoscopic modeling material, active energy ray curable ink, inkjet ink, active energy ray curable composition container, two-dimensional or three-dimensional image forming apparatus, two-dimensional or three-dimensional image forming method, cured product, and processed product

Patent metadata

Field	Value
Publication number	US-9790381-B2
Application number	US-201615081326-A
Country	US
Kind code	B2
Filing date	Mar 25, 2016
Priority date	May 8, 2015
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

An active energy ray curable composition is provided. The active energy ray curable composition includes polymerizable compounds including a first monofunctional monomer having a polar group, a second monofunctional monomer having no polar group, and a polyfunctional monomer. The homopolymer of each of the first monofunctional monomer and the second monofunctional monomer has a glass transition temperature of 50° C. or more. The first monofunctional monomer and the second monofunctional monomer account for 50% by mass or more of the polymerizable compounds in total, and the polyfunctional monomer accounts for 30% by mass or less of the polymerizable compounds.

First claim

What is claimed is:

1. An active energy ray curable composition, comprising:
polymerizable compounds including:
a first monofunctional monomer having a polar group;
a second monofunctional monomer having no polar group; and
a polyfunctional monomer,

wherein the homopolymer of each of the first monofunctional monomer and the second monofunctional monomer has a glass transition temperature of 50° C. or more,
wherein the first monofunctional monomer and the second monofunctional monomer account for 50% by mass or more of the polymerizable compounds in total, and the polyfunctional monomer accounts for 30% by mass or less of the polymerizable compounds,
wherein the first monofunctional monomer has an acrylate group and an atomic group other than hydrocarbon, the second monofunctional monomer has an acrylate group but no other atomic group other than hydrocarbon, and the polyfunctional monomer is a urethane acrylate oligomer,
wherein the polymerizable compounds further include a third monofunctional monomer,
wherein the homopolymer of the third monofunctional monomer has a glass transition temperature of less than 50° C., and
wherein the third monofunctional monomer accounts for 10% to 30% by mass of the polymerizable compounds.

2. The active energy ray curable composition of claim 1 , wherein a cured product of the active energy ray curable composition has a stretchability of 50% or more at 180° C., the stretchability being defined by the following formula:
( L 2− L 1)/ L 1

wherein L1 represents a first length of the cured product before a tensile test and L2 represents a second length of the cured product after the tensile test.

3. The active energy ray curable composition of claim 1 , wherein a mass ratio of the first monofunctional monomer having a polar group to the second monofunctional monomer having no polar group ranges from 0.33 to 3.0.

4. The active energy ray curable composition of claim 1 , wherein the homopolymer of each of the first monofunctional monomer and the second monofunctional monomer has a glass transition temperature of 90° C. or more.

5. The active energy ray curable composition of claim wherein the first monofunctional monomer includes at least one member selected from the group consisting of acrylamide compounds and methacrylamide compounds.

6. The active energy ray curable composition of claim 1 , wherein the second monofunctional monomer includes an alicyclic acrylate or an alicyclic methacrylate.

7. A stereoscopic modeling material, comprising:
the active energy ray curable composition of claim 1 .

8. An active energy ray curable ink, comprising:
the active energy ray curable composition of claim 1 .

9. An inkjet ink, comprising:
the active energy ray curable ink of claim 8 .

10. An active energy ray curable composition container, comprising:
a container; and
the active energy ray curable composition of claim 1 contained in the container.

11. A two-dimensional or three-dimensional image forming apparatus, comprising:
an emitter to emit an active energy ray to the active energy ray curable composition of claim 1 ; and
a container containing the active energy ray curable composition of claim 1 .

12. A two-dimensional or three-dimensional image forming method, comprising:
emitting an active energy ray to the active energy ray curable composition of claim 1 to cause the active energy ray composition to cure.

13. A cured product, produced by a method comprising:
emitting an active energy ray to the active energy curable composition of claim 1 to cause the active energy ray composition to cure.

14. A processed product, produced by a method comprising:
stretching-processing or punching-processing the cured product of claim 13 .

15. The active energy ray curable composition of claim 5 , wherein the second monofunctional monomer includes an alicyclic acrylate or an alicyclic methacrylate.

16. The active energy ray curable composition of claim 1 , wherein
the first monofunctional monomer having a polar group is selected from acryloyl morpholine, methacryloyl morpholine, dimethyl acrylamide, isopropyl acrylamide, hydroxyethyl acrylamide, hydroxyethyl methacrylamide, and dimethylamino propyl acrylamide; and
the second monofunctional monomer having no polar group is selected from isobornyl acrylate, isobornyl methacrylate, adamantyl acrylate, adamantyl methacrylate, 2-methyl-2-adamantyl acrylate, 2-methyl-2-adamantyl methacrylate, dicyclopentenyl acrylate, dicyclopentenyl methacrylate, dicyclopentanyl acrylate, dicyclopentanyl methacrylate, 3,3,5-trimethylcyclohexane acrylate, 3,3,5-trimethylcyclohexane methacrylate, and t-butyl methacrylate.

Assignees

• Arita Manabu
• Yoshino Mie
• Ricoh Co Ltd

Inventors

• Arita Manabu
• Yoshino Mie

Classifications

• C08F226/06

  by a heterocyclic ring containing nitrogen · 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

• C09D11/30

  Inkjet printing inks · CPC title

• C08F220/68

  Esters · CPC title

• C08F220/54

  Amides {, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide} · CPC title