Ricoh Company, Ltd.

Other

Tokyo University of Science Foundation

Mitsunobu Morita

Soh Noguchi

Takashi Okada

Kunio Hayakawa

Masahide Kobayashi

Tatsuki Yamaguchi

Takenori Suenaga

Mitsuru Naruse

Norihiko Inaba

Yasutomo Mori

Takehito Yamaguchi

Hiroshi Goto

Takayuki Sasaki

Okitoshi Kimura

Takeshi Kajikawa

Tomoyuki Kugo

Yoshikazu Kaneko

Yutaka Kuga

Tomoyuki Shimada

Kazukiyo Nagai

Shigeyuki Harada

Masafumi Torii

Hitoshi Shimbo

Takao Hiraoka

Yuusuke Koizuka

Hiroaki Matsui

Daisuke Miki

Jun Maruyama

Koji Arimitsu

Ikuo Katoh

Hitoshi Kondoh

Tomohisa Kakuda

Tohru Kitano

Kyohji Tsutsui

Ikuo Kameoka

Shinobu Miyauchi

Shuuji Miyamoto

Yuuichi Kawaguchi

Xiaonan Yang

Provided is a composition including: an acrylamide compound (A1) having a molecular weight of 150 or greater but 250 or less; and a multifunctional polymerizable compound (A2), wherein a content of the multifunctional polymerizable compound (A2) is 15% by mass or greater but 35% by mass or less.

Composition, artificial nail composition, nail decoration material, artificial nail, stored container, image forming apparatus, and image forming method

A method for producing a (meth)acrylic acid amide compound, the method including: adding at least one selected from the group consisting of an amino group-containing compound and a neutralization salt of the amino group-containing compound to a mixture including (meth)acrylic acid halide and an organic solvent immiscible with water to allow the (meth)acrylic acid halide and at least one selected from the group consisting of the amino group-containing compound and the neutralization salt of the amino group-containing compound to react with each other, to produce the (meth)acrylic acid amide compound.

Method for producing (meth)acrylic acid amide compound, composition, and active energy ray-curable composition

To provide an active-energy-ray-curable composition including a compound represented by General Formula (I) below: 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) to (VII) below, each of which may have a substituent such as 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 (HC═CR—C(═O)—):

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

An active energy ray curable composition contains an allophanate-bond-containing compound having an activatable group at exposure to active energy rays and a polyester resin having a polymerizable unsaturated bond.

Active energy ray curable composition, active energy ray curable ink composition, active energy ray curable inkjet ink composition, composition container, image forming device, image forming method, cured matter, and decorated matter

Provided is a composition including: an acrylamide compound represented by general formula (1) below; urethane (meth)acrylate having a SI value of 3 or less in a skin sensitization test; and a polymerization initiator having a molecular weight of 800 or greater, where in general formula (1), Rrepresents an alkyl group containing 1 through 6 carbon atoms, X represents an alkylene group containing 1 through 6 carbon atoms, and Y represents any one selected from the group consisting of general formula (2) below and general formula (3) below, where in general formula (2), Rrepresents an alkyl group containing 1 through 10 carbon atoms, and * represents a binding site with X above, where in general formula (3), Rrepresents an alkyl group containing 1 through 10 carbon atoms, and * represents a binding site with X above.

An active energy ray curable composition contains an acrylamide compound A1 represented by the following Chemical formula 1 or the following Chemical formula 2; 

Active energy ray curable composition, active energy ray curable ink, composition accommodating container, two or three dimensional image forming apparatus, two or three dimensional image forming method, cured matter, decorative matter, artificial nail composition, nail decorative material, and artificial nail

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; Ris a hydrogen atom or a methyl group; and Rand Rare each a straight chain or branched alkyl group having from 1 through 10 carbon atoms.

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

Provided is a composition including: an acrylamide compound represented by general formula (1) in 20% by mass or greater but 50% by mass or less; a multifunctional monomer in 40% by mass or greater but 70% by mass or less; and a polymerization initiator, where in general formula (1), Rrepresents alkyl group containing 1 through 6 carbon atoms, X represents alkylene group containing 1 through 6 carbon atoms, and Y represents any one selected from the group consisting of general formula (2) below and general formula (3) below, where in general formula (2), Rrepresents alkyl group containing 1 through 10 carbon atoms, and * represents binding site with X above, where in general formula (3), Rrepresents alkyl group containing 1 through 10 carbon atoms, and * represents binding site with X above.

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).

Provided is a composition including an acrylamide compound (A1) having a molecular weight of 150 or greater but 250 or less, and a trifunctional or higher polymerizable compound (A2), wherein an amount of the trifunctional or higher polymerizable compound (A2) is 1% by mass or greater but 30% by mass or less relative to a total amount of the composition.

A composition contains an acrylamide compound A1 having an ester structure and a polymerization initiator B1 having a molecular weight of 800 or more.

Composition, accommodating unit, image forming device, and image forming method

A curable composition is provided comprising an acrylamide compound represented by the following general formula (1): wherein, X represents a branched alkylene group having 2 to 5 carbon atoms, and Y represents the following general formula (2): wherein, R represents an alkyl group having 1 to 4 carbon atoms, and * represents a binding site with X.

Curable composition, curable ink, composition stored container, image forming apparatus, image forming method, cured product, and decorated body

A curable composition includes an acrylamide compound represented by the following Chemical formula 1:   

Curable composition, curable ink, accommodating container, image forming device, image forming method, cured matter, and acrylamide compound

Ink contains at least one of a compound represented by the following chemical formula 1, a compound represented by chemical formula 2, a compound represented by chemical formula 3, or a compound represented by chemical formula 4. 

Ink, ink cartridge, ink jet recording device, ink jet ink printed matter, compound, and composition

Provided is an ink containing a compound represented by general formula (1) below where Rrepresents a hydrogen atom or a methyl group, n represents an integer of 2 or greater, a plurality of Rmay be the same as or different from each other, X represents a hydrocarbon group having 2 to 10 carbon atoms, Y represents a tertiary hydroxyl group, or a group having an ester structure, and m represents an integer of 1 or greater. 

Ink, ink cartridge, inkjet recording apparatus, printed matter, photopolymerizable compound, photocurable composition, three-dimensional object formation material, and three-dimensional object

Growing community of inventors

Shizuoka, Japan

Mitsunobu Morita