Fujifilm Corporation

Kazuhiro Yokoi

Kenjiro Araki

Atsushi Sakamoto

Hiroaki Tsuyama

Yuuichi Hayata

Kouki Nakamura

Ippei Nakamura

Kenji Wada

Tokihiko Matsumura

Taiji Katsumata

Kenjirou Araki

Hironori Ohnishi

A photopolymerization initiator which is a compound having a structure in which one or more carbonyl groups that link to a carbon atom are further directly bonded to an aromatic ring of an aromatic acyl group that bonds to a phosphorus atom in an acylphosphine oxide structure. A producing method of a photopolymerization initiator produces the photopolymerization initiator. In a polymerizable composition and an ink jet recording method, the photopolymerization initiator is used. Furthermore, an acylphosphine oxide compound has a partial structure represented by Formula 1 or Formula 2.

Photopolymerization initiator and producing method thereof, polymerizable composition, ink jet recording method, and acylphosphine oxide compound

A photopolymerization initiator which is a compound having a structure in which one or more carbonyl groups that link to a carbon atom are further directly bonded to an aromatic ring of an aromatic acyl group that bonds to a phosphorus atom in an acylphosphine oxide structure. A producing method of a photopolymerization initiator produces the photopolymerization initiator. In a polymerizable composition and an ink jet recording method, the photopolymerization initiator is used. Furthermore, an acylphosphine oxide compound has a partial structure represented by Formula 1 or Formula 2. 

An acylphosphine oxide compound represented by Formula 1-1 or Formula 2-1 which can be used as a photopolymerization initiator. In Formula 1-1 and Formula 2-1, A represents an m-valent group, L's each independently represent a single bond or a divalent linking group, R's each independently represent an alkyl group having 1 to 8 carbon atoms, an aryl group having 6 to 20 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms, Rand Reach independently represent an alkyl group, an aryl group, or an alkoxy group, m represents an integer of 3 or more, n1's each independently represent an integer of 0 to 4, and n2's each independently represent an integer of 0 to 5. 

Photopolymerization initiator, polymerizable composition, ink jet recording method, and acylphosphine oxide compound

An ink composition includes (component A) a polymer that has a group containing a silsesquioxane structure and has a weight average molecular weight of 3,000 or more, (component B) a monofunctional polymerizable compound, and (component C) a polymerization initiator; or an ink composition includes (component A') a compound that does not have an ethylenically unsaturated double bond but has a silsesquioxane structure, and has a molecular weight of 300 or more but less than 3,000, (component B&#x2032;) a monofunctional polymerizable compound, (component C) a polymerization initiator, and (component D) a coloring agent, wherein a content of the (component B&#x2032;) monofunctional polymerizable compound with respect to the total content of all the polymerizable compounds is 80% by mass or more.

Ink composition, image forming method, and printed matter

An active energy ray-curable ink composition includes (component A) monofunctional radically polymerizable monomers, (component B) a polyfunctional oligomer having a glass transition temperature of 20&#xb0; C. or lower and an acrylate value of 300 g/value or more, and (component C) a bifunctional radically polymerizable monomer having a viscosity at 25&#xb0; C. of 15 mPa&#xb7;s or less, wherein the component A includes an N-vinyl compound and a compound represented by the following formula (I), the content of the N-vinyl compound with respect to the total amount of the ink composition is from 10 to 50% by mass, and the content of the component A with respect to the total amount of the ink composition is 70% by mass or more. 

Active energy ray-curable ink composition, inkjet recording method, decorative sheet, decorative sheet molded product, method for producing in-mold molded product, and in-mold molded product

Disclosed is an actinic radiation-curing type ink composition comprising (Component A) a monofunctional radically polymerizable monomer and (Component B) a polyfunctional acrylate oligomer having a glass transition temperature of no greater than 20&#xb0; C. and having an acrylate equivalent of at least 300 g/eq, Component A comprising (Component A-1) an N-vinyl compound and (Component A-2) an acrylamide derivative, Component A having a content of at least 70 mass % of the entire ink composition, and Component A-1 having a content of at least 18 mass % of the entire ink composition.

Actinic radiation-curing type ink composition, inkjet recording method, decorative sheet, decorative sheet molded product, process for producing in-mold molded article, and in-mold molded article

To provide an inkjet ink composition that has excellent discharge stability and gives an ink image film having excellent substrate adhesion and film hardness, and an inkjet recording method employing the inkjet ink composition. An inkjet ink composition comprises (Component A) a dendritic polymer compound having a weight-average molecular weight of 3,000 to 100,000 and having a constituent repeating unit represented by Formula (I); (Component B) a polymerization initiator; and (Component C) a radically polymerizable compound. 

Inkjet ink composition and inkjet recording method

The present invention provides an actinic ray curable ink composition for inkjet recording, which has a high sensitivity for inhibiting a blocking phenomenon and capability for forming an image, obtained by curing, which exhibits excellent shaping suitability and punching suitability, and which includes: a colorant; a polymerization initiator; a polymerizable monomer; and organic fine particles, the polymerizable monomer containing a monofunctional monomer in an amount of 90% by mass or more with respect to a total mass of the polymerizable monomer, and organic fine particles that are crosslinked.

Actinic ray curable inkjet ink composition, printed article, shaped printed product, and printed article forming method

The present invention provides an active radiation curable ink composition for inkjet recording, the active radiation curable ink composition including: (A) a polymer containing a repeating unit having a radically polymerizable group and having a bicyclo ring structure or a tricyclo ring structure at a site forming a part of a main chain thereof, (B) a photopolymerization initiator, and (C) a radically polymerizable compound having a structure different from that of the (A) radical polymer.

Active radiation curable ink composition for inkjet recording, printed matter, method of manufacturing printed matter, molded article of printed matter, and method of manufacturing molded article of printed matter

The present invention provides an active radiation curable ink composition including: (A) a polymer having two or more acidic groups or two or more basic groups; (B) a polymerizable monomer having a substituent group capable of forming a counter salt with the acidic group or basic group of the polymer (A); (C) a photo-polymerization initiator; and (D) a polymerizable monomer having a different structure from the polymerizable monomer (B).

Active radiation curable ink composition, ink composition for inkjet recording, printed matter, and method of producing molded article of printed matter

An active radiation curable ink composition is disclosed. The ink composition includes a compound having a persulfide bond, at least one end of the persulfide bond being bonded to a ring structure directly or via a carbonyl group or a thiocarbonyl group; one or more radical polymerizable compounds; and a photopolymerization initiator.

Ink composition and method of producing a processed product of printed matter

The present invention provides an ink composition containing: a radical polymerizable compound; a photopolymerization initiator, and a chain transfer agent; and the radical polymerizable compound includes a monofunctional monomer at a ratio of 85% by weight or more in the total weight of the radical polymerizable compound.

Ink composition

The present invention provides an ink composition containing: a polymer having a polyoxyalkylene group and a partial structure selected from the group consisting of a fluoroalkyl group, a siloxane skeleton and a long-chain alkyl group; a polymerizable compound; and a polymerization initiator.

Ink composition, ink composition for inkjet recording, inkjet recording method, and printed article obtained by inkjet recording method

An ink composition is provided that includes (A) a polymerizable silicone compound having an ethylenically unsaturated group and a silicone chain, (B) tetrahydrofurfuryl (meth)acrylate, and (C) a radical polymerization initiator. There are also provided an inkjet recording method that includes (a) a step of discharging onto a recording medium the ink composition and (b) a step of curing the ink composition by irradiating the discharged ink composition with actinic radiation, a printed material obtained by the inkjet recording method, and a process for producing a formed printed material that includes (a) a step of forming an image on a support by discharging the ink composition by an inkjet method, (b) a step of obtaining a printed material having a cured image on the support by irradiating the obtained image with actinic radiation so as to cure the ink composition, and (c) a step of molding the printed material.

Ink composition, inkjet recording method, printed material, and process for producing molded printed material

The present invention provides an ink composition having excellent ink ejection stability and stretching property, curable with a high sensitivity by irradiation of radiation rays, and capable of forming an image excellent in rubfastness and blocking resistance, an inkjet recording method using the ink composition, and a printed article. The ink composition includes (a) a polymer having a siloxane structure and a polymerizable group on a side chain thereof, (b) a polymerizable compound, and (c) a photopolymerization initiator, and the inkjet recording method includes a step of ejecting the ink composition onto a recording medium to be recorded with an inkjet recording apparatus and a step of curing the ink composition by irradiating active radiation rays on the ejected ink composition.

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Kanagawa, Japan

Kazuhiro Yokoi