Active-energy-ray-curable composition, composition stored container, two-dimensional or three-dimensional image forming apparatus, method for forming two-dimensional or three-dimensional image, and cured product

Patent metadata

Field	Value
Publication number	US-10414150-B2
Application number	US-201615196863-A
Country	US
Kind code	B2
Filing date	Jun 29, 2016
Priority date	Jul 8, 2015
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

An active-energy-ray-curable composition including at least one monofunctional (meth)acrylate, at least one multifunctional (meth)acrylate, and at least one polyester-structure-containing polymer. Preferable is an aspect where the active-energy-ray-curable composition further includes a polymer obtained through polymerization of at least one selected from the group consisting of styrene, styrene derivatives, acrylic acid esters, and acrylic acid.

First claim

What is claimed is:

1. An active-energy-ray-curable composition comprising:
at least one monofunctional (meth)acrylate;
at least one multifunctional (meth)acrylate; and
at least one polyester-structure-containing polymer,
wherein an amount of polyester portions in the polyester-structure-containing polymer is 50% by mass or less relative to a total amount of the polyester-structure-containing polymer.

2. The active-energy-ray-curable composition according to claim 1 , further comprising
a polymer obtained through polymerization of at least one selected from the group consisting of styrene, styrene derivatives, acrylic acid esters, and acrylic acid.

3. The active-energy-ray-curable composition according to claim 1 , further comprising:
at least one polymerization initiator; and
at least one polymerization inhibitor,
wherein when an amount of the at least one polymerization initiator is defined as A % by mass, an amount of the at least one polymerization inhibitor is 0.01×A % by mass or more.

4. The active-energy-ray-curable composition according to claim 3 ,
wherein the at least one polymerization inhibitor has two hydroxyl groups in a molecule of the at least one polymerization inhibitor.

5. The active-energy-ray-curable composition according to claim 1 ,
wherein the at least one monofunctional (meth)acrylate has Stimulation Index of less than 3.

6. The active-energy-ray-curable composition according to claim 1 ,
wherein the at least one multifunctional (meth)acrylate has Stimulation Index of less than 3.

7. The active-energy-ray-curable composition according to claim 1 ,
wherein a weight average molecular weight of the polyester-structure-containing polymer is 100,000 or less.

8. The active-energy-ray-curable composition according to claim 1 ,
wherein an amount of the polyester-structure-containing polymer is 10 parts by mass or more but 20 parts by mass or less relative to 100 parts by mass of a total of the at least one monofunctional (meth)acrylate and the at least one multifunctional (meth)acrylate.

9. The active-energy-ray-curable composition according to claim 1 ,
wherein an amount of the at least one monofunctional (meth)acrylate is 50 parts by mass or more but 85 parts by mass or less relative to 100 parts by mass of a total of the at least one monofunctional (meth)acrylate and the at least one multifunctional (meth)acrylate.

10. The active-energy-ray-curable composition according to claim 1 ,
wherein an amount of the at least one multifunctional (meth)acrylate is 15 parts by mass or more but 50 parts by mass or less relative to 100 parts by mass of a total of the at least one monofunctional (meth)acrylate and the at least one multifunctional (meth)acrylate.

11. The active-energy-ray-curable composition according to claim 1 ,
wherein a viscosity of the active-energy-ray-curable composition at 25° C. is 5 mPa·s or more but 18 mPa·s or less.

12. The active-energy-ray-curable composition according to claim 1 ,
wherein the active-energy-ray-curable composition is a material for forming a three-dimensional object.

13. The active-energy-ray-curable composition according to claim 1 ,
wherein the active-energy-ray-curable composition is an ink for inkjet.

14. A composition stored in a container comprising:
the active-energy-ray-curable composition according to claim 1 ; and
a container storing the active-energy-ray-curable composition.

15. A two-dimensional or three-dimensional image forming apparatus comprising
the composition stored container according to claim 14 .

16. A method for forming a two-dimensional or three-dimensional image, the method comprising
irradiating an active-energy-ray-curable composition with active energy rays,
wherein the active-energy-ray-curable composition comprises:
at least one monofunctional (meth)acrylate;
at least one multifunctional (meth)acrylate; and
at least one polyester-structure-containing polymer,
wherein an amount of polyester portions in the polyester-structure-containing polymer is 50% by mass or less relative to a total amount of the polyester-structure-containing polymer.

17. The method for forming a two-dimensional or three-dimensional image according to claim 16 , the method further comprising
ejecting the active-energy-ray-curable composition onto a polyethylene terephthalate substrate that is not surface-treated.

18. A cured product comprising:
a substrate; and
a cured film disposed on the substrate,
wherein the cured film is obtained through curing by irradiating an active-energy-ray-curable composition with active energy rays, and
wherein the active-energy-ray-curable composition comprises:
at least one monofunctional (meth)acrylate;
at least one multifunctional (meth)acrylate; and
at least one polyester-structure-containing polymer,
wherein an amount of polyester portions in the polyester-structure-containing polymer is 50% by mass or less relative to a total amount of the polyester-structure-containing polymer.

19. The cured product according to claim 18 ,
wherein the substrate is a polyethylene terephthalate substrate, and the cured film comprises the at least one monofunctional (meth)acrylate, the at least one multifunctional (meth)acrylate, and the at least one polyester-structure-containing polymer, and
wherein close adhesiveness between the polyethylene terephthalate substrate and the cured film is 1 kPa or more.

Assignees

• Hiraoka Takao
• Iio Masato
• Miki Daisuke
• Ricoh Co Ltd

Inventors

• Hiraoka Takao
• Iio Masato
• Miki Daisuke

Classifications

• C08J7/0427

  with only one layer of a composition containing a polymer binder (with more layers C08J7/042) · CPC title

• C09D11/324

  containing carbon black · CPC title

• C09D11/106

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

• C09D11/104

  Polyesters · 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