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

Patent metadata

Field	Value
Publication number	US-11208516-B2
Application number	US-201916523657-A
Country	US
Kind code	B2
Filing date	Jul 26, 2019
Priority date	Jul 30, 2018
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

Provided is a composition including an acrylamide compound having a molecular weight of 150 or greater but 250 or less (A1), and a monomer having a cyclic structure represented by General Formula (3) below, or General Formula (4) below, or both (A2),where, in General Formulae (3) and (4), L is a single bond or a straight chain or branched alkylene group that has from 1 through 10 carbon atoms and may include an oxygen atom, a nitrogen atom, or a sulfur atom; A is a cyclic structure that has from 2 through 10 carbon atoms and may include an oxygen atom, a nitrogen atom, or a sulfur atom; R6 is a hydrogen atom or a methyl group; and R7 and R8 are each a straight chain or branched alkyl group having from 1 through 10 carbon atoms.

First claim

What is claimed is:

1. A composition comprising:
an acrylamide compound having a molecular weight of 150 or greater but 250 or less (A1); and
at least one monomer (A2) selected from the group consisting of acryloyl morpholine, isobornyl acrylate, tetrahydrofurfuryl acrylate, cyclohexyl acrylate, t-butylcyclohexyl acrylate, N-vinylpyrrolidone, dicyclopentenyloxyethyl acrylate, and pentamethylpiperidinyl methacrylate
wherein the acrylamide compound (A1) is represented by General Formula (1), General Formula (2), or both:
CH 2 ═CH—CO—N(R 1 )R 2 —CO—O—R 3   General Formula (1)

wherein 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,

wherein 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.

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

3. The composition according to claim 1 ,
wherein the at least one monomer having a cyclic structure (A2) is selected from the group consisting of acryloylmorpholine, isobornyl acrylate, tetrahydrofurfuryl acrylate, t-butylcyclohexyl acrylate, and cyclohexyl acrylate.

4. The composition according to claim 1 ,
wherein the at least one monomer having a cyclic structure (A2) is present in an amount of 5% by mass to 40% by mass relative to a total amount of the composition.

5. The composition according to claim 1 ,
wherein the composition which is free of an organic solvent.

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

7. The composition according to claim 1 ,
wherein the composition is an inkjet composition.

8. A storage container comprising:
a container; and
the composition according to claim 1 that is stored in the container.

9. 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.

10. The apparatus according to claim 9 ,
wherein the curing unit is a UV-LED configured to emit ultraviolet rays having a peak at a wavelength of 365 nm or longer but 405 nm or shorter.

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

12. The method according to claim 11 ,
wherein the curing includes applying ultraviolet rays having a peak at a wavelength of 365 nm or longer but 405 nm or shorter using a UV-LED.

13. A cured product obtained by curing the composition according to claim 1 .

14. A formed article obtained by stretching the cured product according to claim 13 .

15. A decorated article obtained by applying on a base a surface decoration formed of the cured product according to claim 13 .

Assignees

• Ricoh Co Ltd

Inventors

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

Classifications

• B33Y70/00 Primary

  Materials specially adapted for additive manufacturing · CPC title

• C09D11/30 Primary

  Inkjet printing inks · CPC title

• B33Y40/20

  Post-treatment, e.g. curing, coating or polishing · CPC title

• B33Y30/00

  Apparatus for additive manufacturing; Details thereof or accessories therefor · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title