US 11,920,045 B2
Active-energy-ray-curable composition, active-energy-ray-curable ink composition, active-energy-ray-curable inkjet ink composition, composition stored container, two-dimensional or three-dimensional image forming apparatus, two-dimensional or three-dimensional image forming method, cured material, and decorated article
Soh Noguchi, Kanagawa (JP); Mitsunobu Morita, Shizuoka (JP); Takashi Okada, Kanagawa (JP); Tatsuki Yamaguchi, Kanagawa (JP); and Koji Arimitsu, Tokyo (JP)
Assigned to Ricoh Company, Ltd., Tokyo (JP); and Tokyo University of Science Foundation, Tokyo (JP)
Filed by RICOH COMPANY, LTD., Tokyo (JP); and TOKYO UNIVERSITY OF SCIENCE FOUNDATION, Tokyo (JP)
Filed on Apr. 1, 2020, as Appl. No. 16/837,153.
Claims priority of application No. 2019-069922 (JP), filed on Apr. 1, 2019; and application No. 2019-164371 (JP), filed on Sep. 10, 2019.
Prior Publication US 2020/0308425 A1, Oct. 1, 2020
Int. Cl. C09D 11/10 (2014.01); B33Y 70/00 (2020.01); C09D 11/101 (2014.01); C09D 11/38 (2014.01); B29C 64/112 (2017.01); B33Y 10/00 (2015.01)
CPC C09D 11/101 (2013.01) [B33Y 70/00 (2014.12); C09D 11/38 (2013.01); B29C 64/112 (2017.08); B33Y 10/00 (2014.12)] 18 Claims
 
1. An active-energy-ray-curable composition comprising
a compound represented by General Formula (I) below:

OG Complex Work Unit Chemistry
where in the General Formula (I):
R is hydrogen or a methyl group;
A is a structure expressed by one selected from the group consisting of Structural Formulas (II), (IV), (V), (VI) or (VII) below, each of which have a substituent which is optionally selected from an alkyl group or an alkoxy group, or both; j and k in the Structural Formulas (VI) and (VII) are an integer of 0 or more;
X denotes a substituent including a heteroatom;
n is an integer of 0 or more, m is an integer of 1 or more, and n+m is 3 or more, or n is an integer of 0 and m is an integer of 2; and
wavy lines in the Structural Formulas (II) to (VII) each independently denote a bond with X or a (meth)acryloyl group (H2C═CR—C(═O)—):

OG Complex Work Unit Chemistry
and
wherein the active-energy-ray-curable composition further comprises:
a radically polymerizable compound,
wherein the active-energy-ray-curable composition includes from 4 parts by mass to 20 parts by mass of the compound represented by the General Formula (I) relative to 100 parts by mass of the radically polymerizable compound.