Composition, cured product, storage container, image forming apparatus, and image forming method

Patent metadata

Field	Value
Publication number	US-11084940-B2
Application number	US-201916441796-A
Country	US
Kind code	B2
Filing date	Jun 14, 2019
Priority date	Jul 30, 2018
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

Provided is a composition including an acrylamide compound having a molecular weight of 150 or greater but 250 or less (A1), a polyfunctional polymerizable compound including an alkylene oxide group (A2), and a polyfunctional polymerizable compound (A3) different from the polyfunctional polymerizable compound (A2).

First claim

What is claimed is:

1. A composition comprising:
an acrylamide compound (A1) having a molecular weight of 150 or greater but 250 or less;
a polyfunctional polymerizable compound (A2) including an alkylene oxide group; and
a polyfunctional polymerizable compound (A3) different from the polyfunctional polymerizable compound (A2),
wherein the acrylamide compound (A1) is represented by General Formula (1) below, or General Formula (2) below, or both,
CH 2 ═CH—CO—N(R 1 )—R 2 —CO—O—R 3   General Formula (1)

where, in General Formula (1), R 1 is a hydrogen atom or a straight chain or branched alkyl group having from 1 through 4 carbon atoms, R 2 is a straight chain or branched alkylene group having from 1 through 4 carbon atoms, and R 3 is a straight chain or branched alkyl group having from 1 through 4 carbon atoms, with the proviso that a total number of carbon atoms of R 1 , R 2 , and R 3 is from 2 through 6,

where, in General Formula (2), a ring X is a cyclic structure that includes a nitrogen atom and has from 2 through 5 carbon atoms, R 4 is a single bond or a straight chain or branched alkylene group having from 1 through 3 carbon atoms, and R 5 is a straight chain or branched alkyl group having from 1 through 3 carbon atoms, with the proviso that a total number of carbon atoms of the ring X, R 4 , and R 5 is from 3 through 6; and
wherein the polyfunctional polymerizable compound (A2) comprises a methacrylate group, an acrylate group, or both.

2. The composition according to claim 1 ,
wherein the acrylamide compound (A1) is represented by General Formula (1) and R 3 is an alkyl group having from 1 through 2 carbon atoms.

3. The composition according to claim 1 ,
wherein an amount of the polyfunctional polymerizable compound (A2) is 10% by mass or greater but 30% by mass or less.

4. The composition according to claim 1 ,
wherein an alkylene oxide chain of the polyfunctional polymerizable compound (A2) includes 3 alkylene oxide repeating units or greater but 13 alkylene oxide repeating units or less.

5. The composition according to claim 1 ,
wherein an amount of the polyfunctional polymerizable compound (A3) is 5% by mass or greater but 20% by mass or less.

6. The composition according to claim 1 ,
wherein the composition is an active energy ray-curable composition.

7. A storage container comprising:
a container; and
the composition according to claim 1 , where the composition is stored in the container.

8. A two-dimensional or three-dimensional image forming apparatus, the apparatus comprising:
a container, in which the composition according to claim 1 is stored;
an application unit configured to apply the composition; and
a curing unit configured to cure the composition.

9. A two-dimensional or three-dimensional image forming method, the method comprising:
applying the composition according to claim 1 ; and
curing the composition.

10. A cured product obtained with the composition according to claim 1 .

11. A stretched article comprising:
the cured product according to claim 10 which is stretched.

12. A decorated article comprising:
a base; and
the cured product according to claim 10 on the base.

Assignees

• Yamaguchi Tatsuki
• Kobayashi Masahide
• Morita Mitsunobu
• Okada Takashi
• Noguchi Soh
• Suenaga Takenori
• Ricoh Co Ltd

Inventors

• Yamaguchi Tatsuki
• Kobayashi Masahide
• Morita Mitsunobu
• Okada Takashi
• Noguchi Soh
• Suenaga Takenori

Classifications

• B33Y70/00 Primary

  Materials specially adapted for additive manufacturing · CPC title

• B29C64/255

  Enclosures for the building material, e.g. powder containers · 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

• B29C64/112

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

• B41M5/0023

  Digital printing methods characterised by the inks used (inks per se C09D11/00) · CPC title